Upstaff Developer Profile Directory

All vetted software engineers you need to build AI, Web3, and data Products.

  • Dedicated Full-time commitment for long-term or Time& Material for shorter or ongoing support
  • Europe, Israel, LatAm, United States, Asia geography coverage
  • Remote and hybrid engagement
  • Trial period, no termination fees or hidden costs for transparent and risk-free onboarding.
Laravel 5yr.
Vue.js 5yr.
MySQL
PHP 7yr.
Symfony 7yr.
CSS3 7yr.
HTML5 7yr.
JavaScript
TypeScript
CodeIgniter
Lumen
Yii
Contact Form 7
WPML
CSS
HTML
jQuery
Tailwind CSS
XML
XSL
Ext JS
React
Instagram
JSON
PHPUnit
Twig
Xdebug
Business Analysis
Google Analytics
Redis
SQL
SQLite
AWS
AWS API
AWS Cloudformation
AWS EC2
AWS S3
1C
Facebook API
Google API
Google Maps API
Instagram API
Mailchimp API
PayPal API
RESTful API
Stripe
Twilio
Twitter API
CDN
FTP
SSH
CI/CD
Cypress
DDD
DRY
KISS
OOP
SOLID
Docker
Git
Jira
Sentry
Shell Scripts
ACF
Geocoding API
IAM
Pest
RDS
SSL Cloudflare
WP Bakery
...

* 7 years of experience in a Web Development team environment. Experience with Web Technologies: HTML5, CSS3, PHP, Symfony, Laravel, Javascript, Vue.js and jQuery. * Working knowledge of Data Formatting Technologies: XML, XSL, and JSON. Experience with Web Servers: Apache and NGINX. * Strong understanding of Utility Languages: FTP, SSH, Shell Scripting. * Working knowledge of Content Management Systems: WordPress, modX. Experience with Common Development tools (Git, SVN, etc).

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Seniority Senior (5-10 years)
Location Zaporizhia, Ukraine
JavaScript 8yr.
React 8yr.
TypeScript 5yr.
Node.js 5yr.
Next.js 3yr.
Redux 4yr.
PHP 1yr.
React Native 1yr.
Angular
AngularJS
Backbone.js
Express
jQuery
Koa.js
NestJS
Angular CLI
ngFor
ngIf
NgRx
ngrx-forms
ngSwitch
React Bootstrap
reactive-forms
Redux-Saga
RxJs
Webpack
Angular Material UI
Ant Design
Material UI
Cordova
Ionic
AWS ElasticSearch
FireStore
MongoDB
MySQL
NoSQL
PostgreSQL
Redis
Sequelize
SQL
AWS
AWS EC2
AWS Lambda
AWS S3
Blockchain
Apache HTTP Server
Nginx
API
GraphQL
RESTful API
Conflict Management
Emotional Intelligence (EI)
Mentor Aptitude
Team Management
Team Management Skills
DeFi
Fortmatic
MetaMask
NFT
Smart Contract
Subsquid
Wallet Link
Web3
Docker
Kubernetes
MVC
REST
WebRTC
WebSockets
WordPress
...

10+ years of experience in web development, M.Sc in Software Engineering, GAI, LLMs Front-End: Angular, React, Vue.js (JavaScript & TypeScript) Back-End: Node.js, Next.js, TypeScript , PHP Mobile: React Native AWS Cloud infrastructure Control systems (e.g., Git) and familiarity with DevOps practices for continuous integration and deployment (CI/CD). Unit testing, integration testing, and end-to-end testing. Experience leading and mentoring a team of developers, including assigning tasks, providing guidance, and ensuring the team's success. Ability to motivate and inspire team members, resolve conflicts, and provide constructive feedback. Experience conducting assessments and interviews remotely.

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Seniority Architect/Team-lead
Location Ukraine
PostgreSQL 5yr.
REST 5yr.
TypeScript 3yr.
Python
Go
Gin 5yr.
GORM 5yr.
CSS 5yr.
HTML 5yr.
Zend 5yr.
Docker 5yr.
Git 5yr.
Microsoft Visual Studio Code 5yr.
Gorilla Mux 3yr.
Node.js 3yr.
WebSockets 3yr.
Google Maps API 3yr.
Expo.io 2yr.
Kubernetes 2yr.
Akka Streams 1yr.
Apache Spark 1yr.
ASP.NET MVC Pattern 1yr.
ASP.NET WebForms 1yr.
Entity Framework 1yr.
.Net WCF 1yr.
ATL 1yr.
MFC 1yr.
jQuery 1yr.
XML 1yr.
RubyMine 1yr.
Apache Hive 1yr.
Apache Nifi 1yr.
AWS ElasticSearch 1yr.
Bigtable 1yr.
CockroachDB 1yr.
Microsoft SQL Server 1yr.
MongoDB 1yr.
Oracle Database 1yr.
GCP 1yr.
Dataproc 1yr.
Google BigQuery 1yr.
Google Cloud Pub/Sub 1yr.
Consul 1yr.
REST C++ SDK 1yr.
Qt Creator 1yr.
STL 1yr.
Boosting 1yr.
ChromeDP 1yr.
Assembler
Assembly
C
C#
C++
Java
JavaScript
Kotlin
Ruby
Swift
X++
chi
flax
Google JAX
Grok
JAX
LangChain
NumPy
OpenAI
PyTorch
Spacy
TensorFlow
xAI
MS Dynamics 365
Beego
Echo
Gramework
Boost
Cross-platform UI
Django
FastAPI
Flask
Pandas
React Hooks
Apache Airflow
LightGBM
moving pandas
Aerospike
FoundationDB
Memcached
MySQL
Redis
AWS
Azure
MS Azure
Microsoft Power Platform
Azure DevOps Server (ex TFS Team Foundation Server)
Kitura
Bash
PowerCLI
PowerShell
Centos
FreeBSD
Linux
macOS
Windows
fasthttp
GRPC
NAT
Networking
Design patterns
Observer
Qemu
OpenAPI
Swagger
Mercurial
SVN
Grafana
Prometheus
Zabbix
Qt Framework
Visual Studio
NATS
RabbitMQ
Selenium
TFS
Code Blocks
DAG
fasthhtp
logrus
Multi-threading
Quart
Tesseract OCR
zap
...

* Master’s Degree in Computer Science * 19 years in Software Engineering: Python, Kotlin, Swift, C/C++, and TypeScript in software engineer, team lead, and software architect roles. * Data processing with numpy, pandas, moving pandas, airflow, spark,and nifi. * Designed and implemented a scalable multi-microservice backend for an enterprise AdTech CRM, integrating 10+ third-party services and streamlining client management operations. * Built and deployed a billing system for a money exchange platform, integrating third-party payment systems and delivering a user-friendly web interface for seamless transactions. * Optimized data processing pipelines by implementing quantiles on streams, enabling real-time analytics and supporting large-scale data operations for scientists and business stakeholders. * Extensive background in data processing and reporting. Good abilities in SCM tools like Git, and in multi-threading and networking. Strong skills in Docker, gRPC; * Cloud service platforms: AWS, Google Cloud, and MS Azure; * Experience with DBMS, PostgreSQL, MySQL, MongoDB; * Certificated knowledge of Blockchain; * Certified Senior Go Engineer (12 years with GoLang).

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Seniority Expert (10+ years)
Location Ukraine
Python 5yr.
Django 3yr.
Mobile development
Flask
API
FastAPl 5yr.
QA Automation 3yr.
Parse 2yr.
RPA 2yr.
DDOS protection
Solidity
Threads
Aiogram
AsyncIO
pytest
Tortoise ORM
Web3.py
CSS
HTML
FastAPI
Mini-Apps
NestJS
Node.js
React
MariaDB
MongoDB
MySQL
PostgreSQL
Redis
SQL
SQL Alchemy
SQLAlchemy
pyTelegramBotAPI
RESTful API
Telegram API
Celery
Kafka
Crypto Services
TON
TonKeeper
Web3
cyber security
Selenium
Docker
Kubernetes
FDD
serverless
Jinja2
Project Management
Telegram Mini Apps
Ubuntu
VPN
BATM
Multiprocessing
...

- Python Developer with 5+ years of experience in backend development and automation: Django (3 years), Flask, and Fast API for web application development; - Maintaining and supporting production systems using FastAPI and SQLAlchemy, API integrations including financial services and crypto platforms; - Built and supported Telegram bots and automation tools for business operations; - Docker containerization: Docker-compose, Docker via Render (serverless). Deployment and Linux server management (Ubuntu); - Familiar with data reporting and basic analytics through internal monitoring tools; - Open to part-time and distributed team environments with a focus on ongoing system support. - Reached the Top 10 freelance Python engineers on the local market at the age of 17 (showcasing early talent and initiative). - Worked on projects with a multi-million user base, contributing to scalable architecture and high-load system stability. - Successfully launched an educational platform in the USA, now actively used by students, tutors, and academic institutions. - Represented the dev team at the international Wefi Beyond Banking Summit, delivering a product presentation to a global fintech audience.

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Seniority Middle (3-5 years)
Location Ternopil, Ukraine
Scala
NLP
Akka
Apache Spark
Akka Actors
Akka Streams
Cluster
Scala SBT
Scalatest
Apache Airflow
Apache Hadoop
AWS ElasticSearch
PostgreSQL
Slick database query
AWS
GCP
Haddop
Microsoft Azure API
ArgoCD
CI/CD
GitLab CI
Helm
Travis CI
GitLab
HTTP
Kerberos
Kafka
RabbitMQ
Keycloak
Swagger
Kubernetes
Terraform
Observer
Responsive Design
Unreal Engine
...

Software Engineer with proficiency in data engineering, specializing in backend development and data processing. Accrued expertise in building and maintaining scalable data systems using technologies such as Scala, Akka, SBT, ScalaTest, Elasticsearch, RabbitMQ, Kubernetes, and cloud platforms like AWS and Google Cloud. Holds a solid foundation in computer science with a Master's degree in Software Engineering, ongoing Ph.D. studies, and advanced certifications. Demonstrates strong proficiency in English, underpinned by international experience. Adept at incorporating CI/CD practices, contributing to all stages of the software development lifecycle. Track record of enhancing querying capabilities through native language text processing and executing complex CI/CD pipelines. Distinguished by technical agility, consistently delivering improvements in processing flows and back-end systems.

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Seniority Senior (5-10 years)
Location Ukraine
XSLT 10yr.
Python
XML
C#
Java
JavaScript
NumPy
Beautiful Soup
Pandas
Scrapy
CSS
HTML
XPATH
Flask
JSON
Visual Basic .NET
Microsoft SQL Server
AWS
AWS Lambda
Google AutoML
Regexp
Selenium Webdriver
SFTP
CAT Tools
IATA NDC Standard XML
JATS XML
Java Saxon Parser
libxslt
Python Requests Library
Schematron
SOAP XML
SVG
XSD
...

- 12+ years of experience in IT - 10+ years of experience with XSLT - Writing, testing and maintaining the XSLT code that applies some filtration and conditions on XML - Converting IATA NDC Standard XML Content format into IATA NDC Standard XML format using XSLT - Familiar with many processing engines like Saxon (Java) - libxslt (C) - Python’s package - Upper-intermediate English - Available ASAP

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Seniority Senior (5-10 years)
Location Cairo, Egypt
Haskell 3yr.
Scala 2yr.
Plutus 2yr.
Akka
Cardano
Objective-C
OCaml
Python
Ruby
Swift
NumPy
Akka Actors
Akka Streams
Clojure
Scala Cats
Scala SBT
Matplotlib
Pandas
SciPy
Seaborn
Ruby on Rails
RVM
AWS ElasticSearch
PostgreSQL
Apache Mesos
Apache Subversion
Gitflow
Bash
Regexp
BugZilla
Docker
GraphQL
RESTful API
Jenkins
Jira
Kafka
ZeroMQ
Waterfall
Akka HTTP
Akka Stream
Coq
Emacs Lisp
Marathon
monocle
Plutarch
Plutus Core
portage
pyenv
Skikit-learn
Skipy
...

- 3 years of experience in Plutus / Cardano smart contracts developer role (Plutus Core, Plutarch) - Cardano ecosystem knowledge - Haskell, Scala, Cabal/Stack, GADTs/Type families, Generics, Servant, lenses, mtl, free monads - senior-level professional - Functional programming with FRP, Redux, Event sourcing, Category theory - OOP, OOD, UML, Design patterns, SOLID, DI. TDD, BDD, Unit, functional, and integration testing - 14 years of experience in software engineering

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Seniority Senior (5-10 years)
Location Ukraine
React 6yr.
React Native 2yr.
JavaScript 7yr.
Node.js 3yr.
Go
Java
PHP
Ruby
TypeScript
Bootstrap
Chrome Extensions
jQuery
LESS
SCSS
Ember.js
Gulp.js
NPM
React-Saga
Redux
Redux Thunk
Webpack
Java SE
Ruby on Rails
SQL
AWS
DigitalOcean
Linode
Atlassian Trello
Jira
BitBucket
GitHub
GitLab
CI/CD
GraphQL
RESTful API
Jest
Kanban
Scrum
...

- 9 years of proven professional expertise in the IT industry; - Advanced experience in Web Development using JavaScript 7+ years; - Solid experience in software development using ReactJS and React Native (6+ years); 3 Years with Node.js - Good experience in Web development using PHP; - Beginner experience in Web Development using Ruby on Rails; - Beginner experience in Web Development using Java; - Upper-Intermediate English

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Seniority Senior (5-10 years)
Location Ukraine
MS Dynamics 365
C# 10yr.
JavaScript 10yr.
jQuery 10yr.
CAML 10yr.
CSS 10yr.
HTML 10yr.
Visual Studio 10yr.
Web Services 10yr.
Microsoft SQL Server 7yr.
Vue.js 5yr.
Bootstrap 5yr.
TypeScript 4yr.
AngularJS 4yr.
React 4yr.
Fluent UI 4yr.
Metro UI 3yr.
Express
Node.js
ASP.NET
Fabric UI
HTML5
SP-PNP
React Hooks
React Native
Firebase
SQL
MS Flow
Drupal 7
Microsoft Power Platform
Parse Platform
SharePoint
Office 365
Power Apps
Xamarin
...

- IT experience starting in 2015. - Experience with the full lifecycle of designing, developing, installing, configuring, and maintaining applications on SharePoint 2007/2010/2013/2016/2019 Online. Nintex products (Workflows, Forms) - Strong knowledge of .NET, C#, ASP.NET, HTML (HTML5), JavaScript, CSS (CSS3). - Experience with Dynamics CRM, Power Apps, CDS, Power Automate, TypeScript, jQuery, Bootstrap (3, 4), Data Tables, SharePoint libs, ReactJS, React-Redux, Vue.js, Semantic UI. - Extensive experience with MS Visual Studio 2012/2013/2015/2017/2019, VS Code, TFS, Jira, Git. Android, Windows Phone, Xamarin, Outlook Add-ins, Outlook framework, React Native, Parse Platform, Firebase. - Upper-Intermediate English

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Seniority Senior (5-10 years)
Location Ukraine
AEM
Java
JavaScript
Angular
AngularJS
Backbone.js
Ext JS
jQuery
Node.js
React
Apache Sling
Struts
FindBugs
Hudson
JCR
JDBC
JDK8
Jsoup
CSS
HTML
Twitter Bootstrap
XSLT
Handlebars.js
MongoDB
MySQL
Oracle Database
PL/SQL
AWS EC2
AWS S3
Agile
BDD
Scrum
TDD
Apache HTTP Server
Apache Tomcat
Internet Information Services (IIS)
J2EE
Jetty
Oracle WebLogic Application Server
Apache Maven
JUnit
Mockito
Atlassian Confluence
IBM Rational ClearCase
Jira
Slack
Bamboo
SonarQube
BitBucket
CVS
Git
Stash
SVN
Eclipse
IntelliJ IDEA
Notepad++
Log4j
macOS
Oracle Solaris
Windows
putty
Splunk
Akamai
Brackets.io
CheckStyle
Felix
JAAS
OSGi
PMD
Site catalyst
VSS
Websphere
...

- 14 years of AEM experience in design, development, integration, and delivery of small to large-scale enterprise-level applications. - An experienced solution architect with a keen interest in business domains, hands-on in technology-based solutions, and a strong focus on delivering measurable value. - Industry Experience: Vast industry experience covering aviation, telecommunications, media, finance, retail, mutual funds, and services sectors. - Technical skills: Best-in-class analytical and problem-solving skills with a track record of on-time and within-budget delivery. - Soft skills: Ability to build strong personal and professional relationships using excellent interpersonal skills. - E-commerce and AEM Expertise - Certificated Adobe Experience Architect, Components Developer, ManagerAreas of expertise include: - Digital transformations including Content Management Systems (CMS) like Adobe Experience Manager (AEM/CQ5). - Application/Software development right from inception to implementation - Implementation strategies, planning, and execution - Agile methodologies such as continuous integration and continuous delivery, features/domain-driven development, extreme programming - Worked with esteemed customers like ANZ Bank, Old Mutual Group (South Africa), Ford, Farmers Insurance, Aegon Insurance, LaQuinta, Cummins, and AT&T in consulting roles - Fluent English

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Seniority Senior (5-10 years)
Location Melbourne, Australia
Python
Django
Flask
Anthropic
PandasAI
TensorFlow
C#
JavaScript
APScheduler
AsyncIO
Beautiful Soup
Django Channels
Django ORM
Dramatiq
Pandas
pytest
CSS
HTML
Django REST framework
FastAPI
Vue.js
Vue Router
Vuex
Data Analysis
Data Mining
Elastic Search Platform
AWS ElasticSearch
MongoDB
PostgreSQL
Redis
SQLAlchemy
AWS MWS (Amazon Marketplace Web Service)
AWS S3
SP-API (Amazon Selling Partner API)
Google API
Telegram API
Bash
Celery
RabbitMQ
CI/CD
Cypress
Unit Testing
Docker
Jinja
microservices architecture
Nginx
Marshmallow
Natural Language
quip-API
...

- 5 years of experience in the IT industry as a Python Engineer - Proficient in using technologies such as Django DRF, Flask, Pandas, BeautifulSoup, SQLAlchemy, Asyncio, Flask + Marshmallow, Apscheduler, Jinja, Quip API, Docker, Nginx, Amazon MWS API, Amazon SP-API, Google API, and Telegram API; - Strong in refactoring, bug-fixing, and working with Python, JavaScript, Django, Django Rest Framework; - Skilled in developing faceted search and matching algorithms using ElasticSearch; - Experienced in PDF generation and importing from various formats; - Developed web applications, API interfaces, and automated scripts for data transformation; - Previous experience includes working as a Python developer focused on data scraping for Amazon, eBay, and Walmart products in dropshipping projects; - Also worked as a C# developer on various projects, specializing in web development, scraping, and parsing data; - Upper-Intermediate English; - Available ASAP

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Seniority Senior (5-10 years)
Location United States
JavaScript 7yr.
WordPress 7yr.
Vue.js 5yr.
Chrome Extensions 1yr.
Ajax
Bootstrap
CSS
HTML
HTML5
HTML/CSS Preprocessors
jQuery
LESS
SASS
SCSS
ES6
Gulp.js
Pinia
Vue Router
Vuex
Webpack
React
Agile
DRY
Kanban
MVC
Scrum
SOLID
TDD
API
RESTful API
Cypress
Unit Testing
Docker
Git
UIKit
...

- 7 years of commercial experience with JavaScript, ECMAScript 6. - 5 years with Vue.js framework (including Vue 3 core principles, Style Guide, Composition API, official documentation of the framework) - Deep understanding of HTML5 and CSS3. - Interacting with API endpoints and other web services. - Converting UI/UX mockups into functional web applications with pixel perfection - Experience with responsive layout, web sites, mini applications in JS and SPA in Vue.js. - Familiar with SOLID, DRY and other clean code design principles. - Experience with UI components like UI Kit & Bootstrap - Unit tests (Cypress) - Projects with Wordpress - Intermediary English

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Seniority Middle (3-5 years)
Location Vinnitsa, Ukraine
JavaScript 5yr.
Web3.js
React
WebRTC
Ant Design 5yr.
Java
TypeScript
OpenAI
Ajax
Bootstrap
Bootstrap 4
CSS
CSS3
HTML
Material UI
SCSS
Socket.io
Storybook
Styled components
Tailwind CSS
Ethers.js
i18next
Mobx
React Hooks
React Query
Redux
Redux Thunk
Redux-toolkit
Zustand
Express
Ext JS
GatsbyJS
NestJS
Next.js
Node.js
MongoDB
PostgreSQL
Blockchain
seo
Agile
Clean Architecture
Kanban
Scrum
Cypress
Jasmine
Jest
Mocha
React-testing-library
Unit Testing
dApps
Hardhat
Solana
Docker
Problem Solving
WebSockets
Chakra UI
React-hook-form
WAGMI
...

- 5+ years of experience as a Front-end JavaScript Developer; - 5+ years of experience in React.js; - Proficient in Solana Blockchain operations, including managing deposits, executing transfers, creating Phantom wallets, and handling contract call interactions; - Strong abilities working with Web3; - Deep experience in Next.js technology; - Experience with WebRTC, Soket.io; - Good knowledge of Tailwind CSS, Bootstrap, and Chakra UI; - Experience working with Redux, and Docker; - Familiar with Node.js; - Proficiency in testing frameworks like Jest and Cypress; - E-commerce, web, and mobile applications, including learning platforms, chatbots, dApps, and cryptocurrency wallet extensions.

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Seniority Senior (5-10 years)
Location Castel San Giovanni, Italy
JavaScript 4yr.
Vue.js 2yr.
React 1yr.
TypeScript
CSS
HTML
SCSS
Styled components
Tailwind CSS
Express
Node.js
Vanilla JS
Vue Router
Vuetify
Vuex
Webpack
Cloud Firestore
Firebase
Authentication
Figma
Git
Google API
RESTful API
Nova Poshta API
...

- 3 years of commercial experience, early projects since 2017. (Vue.Js, JavaScript, Chrome extensions) - Has good knowledge of JavaScript, working with arrays, working with elements, sorting and data algorithms. Good understanding of HTML and CSS. - Familiar with methodologies, principles, paradigms, and patterns in software development. - Vuex for state management and Styled Components for styling. - Rest APIs (Google, NovaPoshta) and Git for version control. - Tailwind, Figma, and Webpack for UI - Experienced in using Google Firebase, Cloud Firestore and Authentication.

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Seniority Junior (1-2 years)
Location Dnipro, Ukraine
Delphi 20yr.
React
Node.js
Assembler
Assembly
C++
Go
Java
JavaScript
PHP
PL
Python
Scala
NumPy
Angular
Vue.js
Ant Design
Apache Spark
Spring Boot
FastAPI
Laravel
Symfony
Yii
Zend
Matplotlib
Pandas
Scrapy
PhpStorm
Power BI
Qlik Sense
Tableau
AWS DynamoDB
CouchDB
DataGrip
FireBird
Informix
MariaDB
Microsoft SQL Server
MongoDB
MySQL
MySQL Workbench
NoSQL
Oracle Database
PL/SQL
PostgreSQL
RDBMS
Redis
SQL
SQL Server Management Studio
Toad
AWS
AWS Aurora
AWS Security Groups
Google BigQuery
API
GraphQL
IntelliJ IDEA
PyCharm
Qt Framework
Visual Studio
WebStorm
Perl
Selenium
Usability tests
Delphi UI
Erwin
Firebase Firestore
IDE
InterBase
Microsoft Project
PowerDesigner
Vue draggable
...

- Software Engineer with over two decades of experience, specializing in system design, and system integration (System Design, Technical Leadership, System Integration, Scalability, Security, Communication, Documentation); - Strong abilities with React.js for building, interactive web applications; - Experienced in Java, Spring Boot, and creating microservices; - Skilled in Node.js for backend development; - More than 20+ years of experience with Delphi, Deep knowledge with different versions of Delphi to 10.2; - Experience with various localisations and Delphi UIs; - Expert in various programming languages including C++, JavaScript, and Python; - Experienced in database management with Oracle, MySQL, and PostgreSQL among others (Data Modeling Database Management, Normalization and Denormalization, Data Integrity, Data Warehousing, ETL, SQL and Query Optimization, Database Design, Stored Routines and Packages, Data Backup and Recovery, Data Migration, Web Scraping); - Experience in technical leadership in various domains such as enterprise software, finance, and healthcare.

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Seniority Expert (10+ years)
Location Ukraine
Node.js 10yr.
JavaScript 15yr.
MongoDB 8yr.
Linux 8yr.
RDBMS 5yr.
PHP 4yr.
Docker 3yr.
Express 2yr.
Ext JS 2yr.
React 2yr.
AWS ElasticSearch 2yr.
Redis 2yr.
AWS 2yr.
NestJS
...

• 15+ years JavaScript programming • Over 10 years in Node.JS programming • Familiar with React.js • Experience building highly scalable distributed web applications and browser extensions • Extensive experience with REST services • Strong communication and cooperation skills • Solid experience as a Backend developer • Fluent in English, written and spoken • long Term experience in remote work with USA and Europien companies • Self-directed person, with proven ability to manage goals and deadlines effectively

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Seniority Expert (10+ years)
Location Belarus
Objective-C 10yr.
iOS 10yr.
C++ 10yr.
Swift 5yr.
SQL 10yr.
Cocoa 10yr.
Architecture and Design Patterns 10yr.
macOS 10yr.
XCode 10yr.
Foundation 5yr.
XML 5yr.
JSON 5yr.
SQLite 5yr.
AppKit 5yr.
UIKit 5yr.
REST 5yr.
RPC (Remote Procedure Call) 5yr.
C#
Delphi
Java
JavaScript
Python
VBA
BLE
Crashlytics
KVC
KVO
Chromium
HTML
WebKit
Google Analytics
Firebase
Microsoft SQL Server
MySQL
Oracle Database
PostgreSQL
SQLCipher
AWS S3
Google Cloud Pub/Sub
3D Modelling
AES
Catch2
e2e testing
AFNetworking
CocoaPods
Cocoa Touch
Core Animation
Core Bluetooth
Core Data
Core Graphics
Core Location
Core Media
Core Text
Flurry
NWProtocolWebSocket
Packet Tunnel Provider
StoreKit
SwiftGen
SwiftLint
Viper
Agile
Design patterns
FDD
MVC
MVVM
Scrum
SDLC
UML
Waterfall
Apache HTTP Server
AppCenter CI
Jenkins
cURL
OpenSSL
TLS
XMPP
FreeBSD
MS-DOS
Ubuntu
Unix
Windows
Git
MVP
Qt Creator
Qt Framework
valgrind
Visual Studio
RESTful API
Windows API
Box2D
Chromium/PDFium
cocos2d
Multitasking
pdfkit
Protobuf
RSA
Soda PDF
Swift Package Manager
...

- Served as a Senior Software Developer in the Two German Automotive Navigation Projects, focusing on System Team operations as well as Map and Routing domains. - VPN and Network Filtering Development: Extensive experience developing VPN solutions, including cross-platform engines for KeepSolid’s VPN Lite, and expertise in low-level network filtering, proxies, and handling internet traffic. - iOS Development Expertise: Over 10 years of hands-on experience with iOS development, including business apps and secure communication tools, with proficiency in Swift and Objective-C. - C++ Proficiency: Strong background in C++ for developing core network functionalities, optimizing performance, and building cross-platform applications. - Enterprise Application Development: Skilled in developing enterprise-level applications, including parental-style internet filters and device policy management tools. - Agile Methodologies: Proven track record of working in Agile Scrum environments, delivering high-quality software with fast iteration and strong collaboration. - Leadership and Team Collaboration: Experience as a Tech Lead, mentoring teams, and coordinating with stakeholders to resolve issues and implement new features. - Available to start ASAP

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Seniority Expert (10+ years)
Location Odesa, Ukraine
Java SE
Java EE
Java FX
PHP
JavaScript
C
C++
Pascal
Python
Swift
Akka
CSS
DHTML
HTML
XML
EJB
Guava
Jackson
JDBC
Swing
Gson
Hibernate
Spring
Kohana Framework
Zend
Microsoft SQL Server
MongoDB
MySQL
Oracle Database
PostgreSQL
Redis
AWS
Azure
GCP
AWS S3
Google App Engine
Apache ActiveMQ
Kafka
RabbitMQ
Apache HTTP Server
JBoss
Nginx
Windows Server
Apache Maven
JUnit
Centos
macOS
Oracle Solaris
RedHat
Ubuntu
Windows
FaceApi
Facebook Graph API
Log4j
Windows API
Git
Mercurial
Gradle
GAE
GCM
Netty
Smarty Templating Engine
...

• 11 years of practical experience in software development. • Excellent experience with application engineering, architecting and development. Capable of analyzing, designing complex, high loaded systems, efficient resources management and problem solving. Quick learner of new technologies. • Fluent English level.

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Seniority Senior (5-10 years)
Location Ukraine
HTML5 6yr.
CSS3 6yr.
Bootstrap 4 6yr.
JavaScript 5yr.
API 4yr.
...

Software engineer with over 5 years of experience in web design and development, specializing in both front-end and back-end technologies. Demonstrated success in developing databases, user interfaces, and implementing new features driven by user feedback. Proven ability to lead software projects to fruition, resulting in a 99.9% uptime rate and significant improvements in user engagement. In-depth knowledge of front-end development with skills in HTML5, CSS3, Bootstrap 4, JavaScript, jQuery, React, and Ajax. Back-end expertise with Node.js, Laravel, PHP, and database management using MYSQL, MongoDB. Adept in SEO and graphic design tools, leveraging Ahrefs, SEMrush, Grammarly, Canva, and Adobe Photoshop to enhance online presence and user experience. Strong educational background with a B.Ed in Education/Mathematics and professional training in Software Engineering. Technical skills are complemented by effective communication and fast learning ability.

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Seniority Senior (5-10 years)
Location Lagos, Nigeria
Node.js 12yr.
Laravel 11yr.
TypeScript 8yr.
AWS 8yr.
Kafka 5yr.
WordPress 13yr.
MySQL 12yr.
REST 11yr.
Express 10yr.
Docker 10yr.
NestJS 9yr.
React 9yr.
Fastify 8yr.
Redux 8yr.
Redis 8yr.
GraphQL 8yr.
AWS DynamoDB 7yr.
RxJs 6yr.
Next.js 6yr.
Nuxt 6yr.
PostgreSQL 6yr.
WebSockets 6yr.
Electron 5yr.
Event Sourcing 5yr.
Protobuf 5yr.
Neptune 3yr.
Snowflake 3yr.
GRPC 3yr.
Spring
AWS ElasticSearch
MongoDB
CloudFlare
GCP
Vercel
AWS CloudFront
Distributed systems
microservices
serverless
Kubernetes
Github Actions
Leadership
Backend
Bun
Deno
Hono
SSE
...

Accomplished software engineer with 13+ years of experience designing resilient backend systems and scalable digital platforms. Deep expertise in Node.js, TypeScript, Kafka, GraphQL, event sourcing, and cloud-native architecture on AWS and GCP. Proven leadership in implementing high-impact, secure, event-driven microservices. Experienced in stakeholder engagement and team mentoring. Passionate about clean code, system optimization, and continuous technical innovation.Core Competencies: - Senior Software Engineer with a proven track record in complex, distributed systems in enterprise environments. - 8+ years of technical leadership and stakeholder collaboration - Backend-focused full-stack engineer with modern cloud, serverless, and data expertise - Strong foundation in microservices, CQRS/ES, and event-driven design - Cloud platform experience: AWS, GCP, Cloudflare (Pages/Workers), Vercel - Framework agnostic, T-shaped Software Engineer, and an expert web developer

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Seniority Expert (10+ years)
Location London, United Kingdom
Facebook Auth 3yr.
Dart 3yr.
React
Redux
TypeScript
Python
Apache Spark Streaming
API
FDD
OOP
LCDP
Data Science
...

With an impressive tenure exceeding 15 years in software engineering, the engineer boasts a rich mosaic of technical expertise, underscored by a strong academic foundation with a Doctorate in Mechanical Engineering from the National Technical University of Ukraine 'Kyiv Polytechnic Institute'. Specializing in Flutter, the engineer has a history of crafting mobile applications with a sharp focus on developing new features, debugging, and enhancements. Proven proficiency in a plethora of programming languages and technologies including Dart, React, Redux, TypeScript, and ActionScript is evident. The engineer's versatility is further highlighted by a diverse project portfolio encompassing automotive interfaces, online casinos, educational platforms, and more. Their contribution to software development adheres to the latest SDLC best practices, with applications that have significantly benefited from their knowledge in Data Science and Python, as certified by Robot_dreams.

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Seniority Expert (10+ years)
Go
Gin
GRPC
PostgreSQL
Fiber
AWS RDS (Amazon Relational Database Service)
API
RESTful API
CI/CD
JUnit
Amazon Relational Database Service
Optimism
...

Software Engineer with a strong background in Mechanical Engineering and specialized training in Go programming. Skilled in Go, Gin, Fiber, gRPC, PostgreSQL, and cloud technologies like AWS, with practical experience in building scalable backend systems and automating deployment workflows. Notable achievements include enhancing processing speeds by 40%, improving system uptime by 30%, and reducing bug reports by 20%. With a proven ability to optimize database queries and improve performance metrics across various projects, this candidate is adept at creating high-quality, resilient applications in fast-paced environments. Proficient in best practices of CI/CD, PostgreSQL schema design, and performance tuning, offering solid expertise in backend development.

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Seniority Junior (1-2 years)
Location Pakistan
JavaScript 1yr.
ASP.NET 1yr.
Flutter 1yr.
Node.js 1yr.
Firebase 1yr.
...

Aspiring Software Developer Skilled in ASP.NET, Flutter, and Firebase Integration. Passionate About UX/UI Design & Innovative IT Solutions, IT Graduate. Problem-Solver & Tech Enthusiast

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Seniority Junior (1-2 years)
Location Bloemfontein, South Africa
Backbone.js 9yr.
TypeScript 8yr.
SQL/NoSQL 3yr.
Express 3yr.
AWS 2yr.
JavaScript 2yr.
SQL 1yr.
PHP
Angular
AngularJS
jQuery
Koa.js
NestJS
Next.js
Figma
Webflow
WordPress
DevExpress
...

10+ years of experience in web development, M.Sc in Software Engineering, GAI, LLMs Front-End: Angular, React, Vue.js (JavaScript & TypeScript) Back-End: Node.js, Next.js, TypeScript , PHP Mobile: React Native AWS Cloud infrastructure Control systems (e.g., Git) and familiarity with DevOps practices for continuous integration and deployment (CI/CD). Unit testing, integration testing, and end-to-end testing. Experience leading and mentoring a team of developers, including assigning tasks, providing guidance, and ensuring the team's success. Ability to motivate and inspire team members, resolve conflicts, and provide constructive feedback. Experience conducting assessments and interviews remotely.

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Seniority Expert (10+ years)
Location Lagos, Nigeria
Python 3yr.
Java 3yr.
Django REST framework 1yr.
React 1yr.
Ext JS 1yr.
C/C++/C#
Crashlytics
Identity Server
Tailwind CSS
Git
Microsoft Visual Studio Code
OOP
Postman
Unix
Zimbra
ACF
...

Full-Stack Engineer with hands-on experience in Django, Python, and MySQL, showcasing strong backend API design with performance optimization, validated by a 30% query speed improvement in past projects. Expertise in frontend development using React.js, demonstrated through enhancing user interfaces and load times for high-traffic applications. Holds top 5% ranking in Java on HackerRank, underpinned by a B.Tech in AI & Data Science, and a Computer Science diploma, ensuring a solid theoretical foundation. Recognized for technical prowess with certifications in AWS Cloud and 5★ Java proficiency. Proven track record in agile development, clean architecture, and real-world problem-solving with a passion for quality and efficiency.

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Git 5yr.
Python
Dart
Agile
Android APIs
CSS
HTML
jQuery
Webpack
seo
Scrum
OAuth
PayPal API
Stripe
CI/CD
Docker
iOS
M query
...

Software Engineer with 5+ years of full-stack development expertise, specializing in mobile and backend technologies. Proven ability to deliver 20+ applications across Android and iOS, utilizing languages such as Python, JavaScript, Dart, and Java coupled with proficient use of frameworks like Django, Node.js, and Flutter. Demonstrates strong proficiency in database management with PostgreSQL, MySQL, MongoDB, and Firebase, and excels in setting up CI/CD pipelines and employing Agile methodologies for efficient deployment and iteration. Holds a BSc in Computer Science from Maseno University and is known for sophisticated leadership and team mentorship capabilities, contributing to key projects like Kenya's Government Digital Services and the CapitalPay fintech platform.

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Seniority Senior (5-10 years)
Location Nairobi, Kenya
Angular
ASP.NET Core Framework
Entity Framework
SQL
TypeScript
ActionScript
NgRx
Azure DevOps
Atlassian Confluence
Atlassian Trello
Jira
CI/CD
Git
Github Actions
Jasmine
Karma
Postman
xunit
Kanban
Scrum
Waterfall
LCDP
RESTful API
Unix
...

With proficiencies in Angular, ASP.NET Core, and real-time web applications, this senior full-stack developer's expertise encompasses scalable solutions for international fintech and civic tech sectors. Integral in crafting trading platforms and logistics tracking systems, they exhibit exceptional skill in front-end design, API integration, and performance optimization for robust reporting systems. An adeptness in Agile practices, paired with a Master's degree in Computer Science, positions this developer as a versatile asset. They bring a track record of successful cross-functional collaboration within distributed teams.

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Seniority Senior (5-10 years)
Location Minsk, Belarus
TypeScript 1yr.
JavaScript
React
HTML
ShadCN
Tailwind CSS
i18next
NPM
React Router
Vite
PostgreSQL
Supabase
Fetch API
Git
Github Actions
Microsoft Visual Studio Code
UI
...

Accomplished junior web developer with a recent graduation from Telerik Academy and expertise in JavaScript and React, demonstrating both front-end and full-stack capabilities. Strong technical foundation displayed through impactful projects utilizing modern technologies such as Next.js, Tailwind CSS, PostgreSQL, and Firebase. Effective at independent work, as shown by rapid skill acquisition in welding transformed into disciplined software development, with a proven track record of mastering new technologies swiftly. An efficient teamwork contributor, evidenced by the successful collaborative development of complex web applications. Recognized for excellence in both academic achievements and practical application, ready to bring skills to a dynamic team.

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Seniority Junior (1-2 years)
Location Sofia, Bulgaria
Go 5yr.
PostgreSQL 5yr.
microservices 5yr.
Kafka 5yr.
Kubernetes
chi
Echo
Fiber
Gin
Gorilla Mux
GORM
Vuetify
MongoDB
BitBucket
CircleCI
Docker
...

The software engineer in question boasts an impressive 5+ years of proven experience primarily as a Golang developer, exhibiting deep expertise in technologies such as Postgres, Kafka, Redis, and frameworks like Gin and Echo. A history of engaging with complex logistics and social platforms showcases this engineer's strengths in microservices architecture, full SDLC involvement, and proficiency with Docker and Kubernetes for containerization and orchestration. Their technical acumen is further evidenced by successful projects like the integrative 'AxleApi' and the innovative 'ConnectUp', demonstrating the capability to lead architecture design and to implement robust solutions. Their role often extends beyond coding to include mentoring peers, reviewing code for quality assurance, and contributing to deployment strategies, encapsulating a well-rounded engineering skill set for modern software development environments.

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Seniority Senior (5-10 years)
Java 4yr.
RESTful API 3yr.
Android App Development 2yr.
Spring Boot 2yr.
SQL 2yr.
Firebase
Git
Refactoring
Sentry
Push Notification
...

Software Engineer with over 4 years of experience at Tacktile Systems, excelling in full-stack Java and Android development, database optimization, and AI-enhanced productivity. Proficient in developing secure, performant RESTful APIs, and dynamic web reporting tools. Innovates using AI tools such as ChatGPT and Cursor AI to expedite development processes. Demonstrates expertise in Java, Spring Boot, RabbitMQ, SMTP2GO, Sentry, JSP, AJAX, JavaScript, and Android SDK, Code Refactoring, MVVM architecture ensuring robust and scalable software solutions.

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Seniority Middle (3-5 years)
FDD
JavaScript
React Native
Salesforce AppExchange
SOQL
Visualforce
TDD
RESTful API
UI/UX Design
...

Seasoned Mobile App Developer with over a decade of experience, specializing in UI/UX design, native mobile app development, and AI-driven applications. B.Tech in IT from Delhi Technical University and possesses significant freelance success with 10,000+ hours on Upwork. Entrepreneurial background includes co-founding two startups, with a notable exit from a peer-to-peer lending platform. Strong technical proficiencies in JavaScript, React Native, and web development with certification in Full Stack Web Development. Adept in enhancing product value through integration of advanced features like 3D animations and Bluetooth device connectivity. Demonstrated expertise in SDLC and modern development practices, catering to a diverse clientele with over 30 mobile app projects delivered.

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Seniority Expert (10+ years)
Python 3yr.
Django REST framework 3yr.
AWS
Docker
Next.js 3yr.
Node.js 3yr.
React 3yr.
C/C++/C#
FastAPI
Redux
Kibana
MongoDB
PostgreSQL
Redis
Azure
DigitalOcean
Bash
Celery
RabbitMQ
Kubernetes
VMWare ESXi
GraphQL
Stripe
Twilio
Jenkins
Linux
Logstash
Prometheus
Nginx
WebSockets
OpenStack
...

An experienced Full Stack Developer with a strong background in Python, Django, and microservices. With 3+ years of industry experience, the engineer has a proven track record of designing, developing, and deploying scalable web applications across various platforms. Expertise includes backend development, cloud platform integrations with AWS and Azure, and containerization with Docker. The candidate has a robust engineering education with a BSc in Electrical Engineering and an MS in Cyber Security, reinforcing a solid foundation in software development and security. Key achievements include successfully deploying Jenkins for CI/CD, building real-time communication applications using Django Channels and Websockets, and optimizing cloud infrastructure for performance and reliability. This profile boasts advanced knowledge in CI/CD pipelines, Kubernetes orchestration, full-text search integration using Elasticsearch, and payment gateway integrations.

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Seniority Middle (3-5 years)
Location Pakistan
React
C#
.NET
C
C++
JavaScript
Objective Pascal
TypeScript
ADO.NET
ASP.NET
ASP.NET Core Framework
ASP.NET MVC Pattern
ASP.NET Web API
Entity Framework
LINQ
.Net WCF
SignalR
WPF
Ajax
Bootstrap
CSS
CSS3
HTML
HTML5
jQuery
NHibernate
Database Design
Microsoft SQL Server
MySQL
Oracle Database
ORM
PL/SQL
relational databases
SQL
SQL Server Management Studio
Azure
Azure DevOps
Azure Service Bus
Azure Services
Azure Storage
Healthcare
retail
RESTful API
Web API
Winforms
Blazor
Internet Information Services (IIS)
Microsoft Visual Studio Code
ReSharper
MVC
NUnit
Postman
TortoiseGit
VPN
WebRTC
ASP.NET SignalR
Azure Database
Backend
Business logic
Core
database
DB
Desktop
Enterprise
MEF
MS
MSBuild
Oracle Database Server
Performance Tuning
Prism
Relational
Responsive
UI
Visual Studio 2022
Web Forms
WinApi
XML/JSON
...

- Experienced Full-Stack Software Developer with 14+ years in commercial IT, with deep expertise in C#/.NET for server-side solutions - Extensive hands-on experience in modern frontend development using JavaScript, TypeScript, and frameworks like React. - Proven ability to engineer scalable architectures, design and implement efficient RESTful APIs, real-time communication layers (SignalR, WebRTC), and robust business logic for complex enterprise systems. - Advanced in building responsive, maintainable client-side interfaces (SPA/SPA-PWA) and integrating UI with backend services using modern web standards (HTML5, CSS3, Bootstrap). - Strong background in relational database design and performance tuning (MS SQL Server, Oracle, MySQL), ORM frameworks (Entity Framework, NHibernate), and cloud integration (Azure). - Track record of delivering high-quality, maintainable code in dynamic domains including Media & Entertainment, Manufacturing, Healthcare, Energy, Industrial Automation, and Retail. - Analytical, proactive, and collaborative — always driving for maximum business value and technical excellence on both frontend and backend.

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Seniority Senior (5-10 years)
Location Lviv, Ukraine
FDD
Business Analysis
Webflow
JavaScript
CSS
HTML
jQuery
SQL
Accessibility
Adobe Photoshop
UML
WordPress
...

Software engineer with over 10 years of experience, specializing in web accessibility and backend development. Holds professional working proficiency in English and native level Ukrainian, with understanding of Polish and basic German. Holds Deque University certifications, showcasing depth in web accessibility knowledge. Successful track record in leading the web accessibility audit & design team and founding Inclusive IT, a company dedicated to testing websites for WCAG 2.1 standards. Technical contributions include valid cross-browser HTML/CSS coding. Experience also includes managing inclusive education projects and developing software solutions with C++, Qt, and Python/Django.

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Seniority Expert (10+ years)
Location Lviv, Ukraine
.NET
React
C#
F#
JavaScript
Python
LLM
Akka Streams
Angular
jQuery
ASP.NET
ASP.NET MVC Pattern
Entity Framework
LINQ
.NET Core
.NET Framework
.Net WCF
WPF
Bootstrap
CSS
DartSass
HTML
HTML5
XML
Immutable.js
Redux
JSON
Notifications
Microsoft SQL Server
MySQL
RavenDB
SQL
SQL Server Management Studio
AWS
Amazon RDS
AWS API Gateway
AWS Backup
AWS CloudWatch
AWS CodePipeline
AWS Lambda
AWS S3
Blockchain
Healthcare
Alchemy
Etherscan
ETH (Ethereum blockchain)
Tokens
API
Swagger
Telegram API
Web API
Automated testing
Cybersecurity
Data Security
Debugging
NUnit
Postman
xunit
CI/CD
Core Data
Docker
Storage
Functional Programming
microservices architecture
serverless
SOLID
Git
SVN
Internet Information Services (IIS)
UI/UX
Backend
cisco
database
Data Management
HR
Linux Pentesting Tools
Logging
Microsoft Azure
MS
Provider
Razor Pages
Software Development
UI
...

- 9+ years of experience as a full-stack developer with a focus on .NET technologies. - Expertise in C#, .NET Framework, .NET Core, and Entity Framework, with a proven ability to design and implement robust, scalable solutions. - Strong front-end development skills using React, Angular, JavaScript, and jQuery, and proficient in database management with MS SQL Server. - Developed a cryptocurrency detection and analysis system using F# and functional programming principles to identify and filter scam tokens in real-time. - Extensive experience with AWS services (Lambda, RDS, S3, API Gateway, CloudWatch) to architect and deploy serverless, cloud-native applications. - Hands-on experience integrating with a variety of third-party APIs, including Etherscan, Copart, and AWS. - Skilled in all phases of the software development lifecycle, including project planning, system design, feature development, and maintenance. - Bachelor's Degree in Cybersecurity with a focus on secure development practices.

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Seniority Senior (5-10 years)
Location Ukraine
.NET
Angular
React
C#
JavaScript
TypeScript
ASP.NET
ASP.NET Core Framework
ASP.NET MVC Pattern
Entity Framework
LINQ
.NET Core
WPF
CSS
HTML
HTML5
Notifications
RxJs
Salesforce
Dashboards
AWS DynamoDB
Cosmos DB
Database Design
Microsoft SQL Server
Redis
SQL
AWS
Azure
Amazon RDS
AWS API Gateway
AWS CloudWatch
AWS CodePipeline
AWS EC2
AWS Lambda
AWS S3
Azure Build Pipeline
Azure DevOps
Azure infrastructure
Azure Service Bus
Azure VM
Fintech
Agile
microservices
microservices architecture
MVC
SOLID
SOLID principles
API
RESTful API
Winforms
Authentication
QA
Security
Unit Testing
CI/CD
DevOps
Docker
Kubernetes
Storage
Github Actions
Grafana
Prometheus
RabbitMQ
Route
Routing
UI/UX
Webflow
Visual Studio
Application Insights
App Service
Backend
Caching
Dashboard
database
Data Management
Diagnostics
Ef
LB
Load Balancer
MS
Open Banking
Payment
Performance Optimization
Predictive Analytics
Query
RDS
Reactive
Release Pipelines
Responsive
Responsive UI
SQL databases
test coverage
Web Development
website
...

- Software engineer with over 8 years of full-stack web development experience, showcasing a solid background in advanced technologies including C#, .NET (Core), ASP.NET, Entity Framework, Angular, React and Azure. - Has successfully developed and implemented several complex applications across various domains, including logistics, government assistance, fintech, and corporate communications. - Track record includes initiating a logistic company's application that strategically optimizes routing and delivery tracking and spearheading the development of a payment system gateway integrating multiple banks. - Acknowledged for a technical breadth encompassing complete project lifecycle expertise from database design to cloud infrastructure configuration and a commitment to quality through extensive unit testing and code coverage.

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Seniority Senior (5-10 years)
Location Kyiv, Ukraine
WCAG
Usability tests
Azure
SLDS
ARIA
API testing
Lighthouse
GRASP
TalkBack
VoIP
ACR
axe-core
JAWS
NVDA
VPATs
WAVE
...

- Accessibility SME with DHS Trusted Tester and NVDA certifications and an IAAP CPWA credential, possessing over a decade of accessibility consulting experience. - Deep expertise in WCAG, Section 508, and ADA compliance, as well as in utilizing and testing with major assistive technologies like NVDA, JAWS, VoiceOver, and TalkBack. - Extensive background in developing and implementing accessibility standards, including Microsoft Accessibility Standards (MAS) and design systems for inclusive user experiences. - Proficient in web, mobile, and desktop application testing across various platforms (iOS, Android, Windows, macOS) and in leveraging assistive technologies for accessibility testing. - Proficient in front-end technologies including ARIA, HTML, CSS, JavaScript, and skilled in conducting both manual and automated testing with tools such as axe, Lighthouse, WAVE. - Holds a B.A. in Home Economics with an A.S. in Computer Science, reflecting a strong foundation in both technology and systematic problem-solving.

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Seniority Expert (10+ years)
Location United States
AWS 5yr.
TypeScript 5yr.
Node.js 5yr.
AWS Lambda 5yr.
serverless 5yr.
...

Accomplished Cloud Developer & DevOps Engineer with over 5 years of experience specializing in AWS services and serverless technology. Proficient in automating and optimizing back-end systems using TypeScript, Node.js, and cloud-native platforms, with a record of reducing execution time and costs in AWS environments. Extensive knowledge of infrastructure-as-code and CI/CD tools, including Terraform and GitHub Actions. Bachelor in Computer Science with a strong background in designing fault-tolerant architectures, asynchronous messaging patterns, and implementing DevOps practices to enhance software delivery. Holds multiple certifications including AWS Certified Solutions Architect - Associate and AWS Certified Security - Specialty.

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Seniority Senior (5-10 years)
Location Karachi, Pakistan
Markdown
JavaScript
TypeScript
CSS
HTML
Storybook
Styled components
Tailwind CSS
Express
NestJS
Next.js
Node.js
React
Vue.js
i18next
Mobx
React Native
Recoil
Redux
Webpack
Firebase
AWS
AWS CloudFront
AWS S3
Agile
microservices
MVC
REST
Scrum
SOLID
Atomic design
CI/CD
Cypress
Jest
Playwright
Docker
Kubernetes
Eslint LinkedIn API
GraphQL
Sentry
WebSockets
Apollo
axe-core
Craco
Docusaurus
husky
Lerna
Lighthouse CI
lint-staged
Local Storage
LogRocket
Monorepo
NX
Prettier
PWAs
Service Workers
Session Storage
...

- Front-end Developer with 8+ years of experience and expertise in creating scalable and high-performance web and mobile applications. - Proficient in React, Next.js, NodeJS, and Nest.js. Demonstrates strong leadership through active involvement in architecture planning, code reviews and mentoring teams. - Skilled in developing adaptive UI components, optimizing application performance and seamlessly integrating backend services using modern technologies such as JavaScript,TypeScript. - Proficient in establishing efficient CI/CD pipelines, enhancing SEO performance and employing advanced analytics tools for continuous improvement. - Passionate about delivering exceptional user experiences, driving continuous optimization and ensuring robust, scalable software solutions.

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Seniority Senior (5-10 years)
Location Cherkasy, Ukraine
React 6yr.
Node.js 6yr.
Solidity 5yr.
Next.js 4yr.
Web3 5yr.
Python
Django
DeFi
Smart Contract
...

Innovative Full Stack Web Developer with 6+ years of experience building responsive web applications and 3+ years delivering decentralized applications (dApps) across EVM and non-EVM chains. Proven ability to integrate smart contracts, optimize wallet connectivity (ConnectKit, wagmi, Viem), and deploy scalable backends on AWS. Strong foundation in JavaScript/TypeScript, React, Node.js and DeFi protocols like Uniswap, Aave, and Curve. Experienced in secure, performant infrastructure design across both centralized (AWS) and decentralized (IPFS, Fleek) environments.

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Seniority Senior (5-10 years)
Location Vietnam
Node.js 6yr.
React 6yr.
TypeScript 4yr.
NestJS
Firebase
MongoDB
AWS
AWS Lambda
CI/CD
REST
...

● Languages: JavaScript, HTML, CSS, SASS ● Libraries: React, Redux, React Material UI ● Unit-tests: Jest, Enzyme, React Testing Library ● Tools: Storybook, Cucumber ● Data approaches: REST API, GraphQL, Ajax ● Databases: MongoDB, MySQL ● Platforms: Node.js ● CMS: Adobe Experience Manager v6.5 ● Project systems: Webpack, GULP ● Version control: Mercurial, Git ● Protocols: HTTP, HTTPS, TCP/IP suite background ● Main OOP principles, classes and hooks approaches ● Familiarity with Docker (deployment on AWS services) ● Linux operating system (user level) ● Skills in Adobe Photoshop (for markup purposes) ● Experience in SEO optimisation and content editing

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Seniority Senior (5-10 years)
Location Ukraine
Python 8yr.
Django 7yr.
Django REST framework 7yr.
SQL
Jinja2 7yr.
Django Ninja 2yr.
Go
JavaScript
Solidity
TypeScript
LLM
OpenCV
CSS3
HTML5
SASS
Django ORM
Echo
Fiber
Gin
AWS ElasticSearch
PostgreSQL
AWS
DigitalOcean
GCP
Azure App Service
Django unit-tests
Unit Testing
Docker
GRPC
JWT
IPFS (InterPlanetary File System)
Jenkins
Jenkins CI
Kafka
RabbitMQ
Linux
Nginx
sendgrid
InterPlanetary File System
IT security audits
Python Django
...

Backend Software Engineer with over 8 years of experience, specializing in Python, Go, and cloud-native technologies. Expert in API development, system architecture, and integrating distributed systems within research, regulated, and blockchain fields. Proficient in Python, Go, SQL, Docker, Kubernetes, AI/ML tools, and cloud services (GCP, AWS). Has led backend development for decentralized applications, real-time monitoring, file-sharing systems, and automated SDLC focusing on security and performance. Demonstrates proficiency in DevSecOps, regulatory compliance, and modern backend frameworks.

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Seniority Senior (5-10 years)
Location South Africa
Python 3yr.
JavaScript 3yr.
Django REST framework 3yr.
FastAPI
Java
TypeScript
NumPy
OpenAI
PandasAI
Beautiful Soup
Bootstrap 4
C/C++/C#
Laravel
Node.js
SQLAlchemy
SQLite
Jira
Lemlist
Selenium
Pipedrive
Python Requests Library
...

Software Engineer with 3+ years expertise in full-stack development, focusing on backend and API integrations. Proficient in Python and JavaScript, with strong experience in Django, Django REST Framework, and FastAPI. Comprehensive knowledge of relational and NoSQL databases, with advanced skills in MySQL. Demonstrable success deploying scalable web solutions on AWS with Docker and maintaining codebases with Git. Practical application of Agile/Scrum methodologies, and a proven track record of producing maintainable, well-documented code for data-driven applications, automated systems, and AI-powered tools. Holds a Bachelor's degree in Computer Science and multiple certifications, showcasing a commitment to professionalism and continuous learning in software engineering.

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Seniority Middle (3-5 years)
Location Accra, Ghana
.NET
ASP.NET Core Framework
C
C#
C++
Go
JavaScript
Objective-C
PL
Python
Swift
TypeScript
Angular
AngularJS
Node.js
React
ASP
ASP Classic
ASP.NET
ASP.NET MVC Pattern
Visual Basic .NET
WPF
Django
Ionic
MFC
React Native
AWS ElasticSearch
Microsoft SQL Server
MongoDB
MySQL
Oracle Database
pgSQL
PL/SQL
PostgreSQL
SQL
T-SQL
AWS
MS Azure
Android
Silverlight
Azure DevOps Server (ex TFS Team Foundation Server)
Docker
Git
Mercurial
SVN
GRPC
iOS
macOS
Ubuntu
microservices
microservices architecture
RabbitMQ
TFS
Visual Studio
XCode
Windows API
Winforms
Expression studio 2-4
Multithreading
.NET Maui
WinApi
Windows ME-10
Windows ME-11
...

- 12+ years of experience in full-stack software development with a strong focus on .NET Core, C#, and Microsoft Azure ecosystem; - Built complex enterprise applications and scalable microservices architectures using ASP.NET Core, Azure Functions, Docker, RabbitMQ, and MS SQL Server; - Developed cross-platform web and mobile applications using React, React Native, and Node.js for industries including healthcare, logistics, education, social networking, and B2B platforms; - Built native apps on Windows, macOS, iOS, and Android with .NET Multi-platform App UI - Designed and integrated REST APIs and real-time messaging features for high-performance systems; - Delivered cloud-native solutions with Azure Web Apps, Azure Storage, CI/CD pipelines, and microservice orchestration; - Applied best practices in code quality, performance optimization, and agile software development; - Led architecture design, team collaboration, and technical mentorship across multiple full-cycle delivery projects; - Experienced in building customer-centric solutions, data-driven dashboards, and scalable CRM-like platforms.

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Seniority Senior (5-10 years)
Location Montenegro
Python 3yr.
Django 1yr.
SQL
MongoDB 1yr.
PostgreSQL 1yr.
JavaScript
FastAPI
RDBMS
SQLAlchemy
Unit Testing
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Software Engineer with a Master's from Sharif University of Technology, specializing in machine learning and predictive modeling, particularly in blockchain data analysis. Technical skill set includes Python, JavaScript, SQL, along with frameworks like Django and FastAPI, and tools such as Docker and Git. Proven expertise in data analysis, machine learning, and web development, with experience designing RESTful API and backend systems. Adept at leveraging modern databases like PostgreSQL, MongoDB, Redis, and implementing agile methodologies for efficient software development. Key projects demonstrate strong capabilities in data pipeline construction, machine learning model development, and creative solution engineering for complex challenges.

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Seniority Junior (1-2 years)
Location Yazd, Iran
Java 15yr.
Java Swing
JavaFX
Hibernate
EJB
Jasperreports
JMS
MS Dynamics 365
Ruby on Rails
Flyway
PostgreSQL
relational databases
SQL
SQLite
Amazon EventBridge
Agile
Apache ActiveMQ
Apache Maven
Bash
BitBucket
Eclipse
Facebook Auth
Winforms
IBM WebSphere Application Server
JBoss
Jenkins
New Relic
Jira
APM
Protobuf
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Software Engineer with over 15 years of experience, possessing a Bachelor's degree in Mechanical Engineering and Computer Science. Expertise includes Java, JavaFX, RESTful APIs, multithreading, and UI frameworks. Established track record in database optimization and system integration, having resolved critical memory leaks and threading issues, and refactoring database layers for increased performance. Proficient in Agile SDLC, with a successful transition from SVN to Git. Key projects include developing utility applications for certified election result dissemination and performance enhancements in complex software systems.

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Seniority Expert (10+ years)
Location Conroe, United States
PHP 15yr.
Node.js 15yr.
JavaScript 15yr.
MySQL 15yr.
Project Management 15yr.
Android APIs
CSS
HTML
jQuery
XML
React
JSON
Qt/C++
Business Analysis
PostgreSQL
AWS
API
Facebook Auth
WAMP
ACD
IOT
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Technical Manager with over 15 years of experience in the IT industry, excelling in web application development and leadership roles. Expert in PHP, Node.js, and JavaScript, with a strong background in database management using MySQL and PostgreSQL. Highly adept in IoT applications, leveraging tools like GeoServer for spatial data management. Maintains a deep understanding of the software development life cycle (SDLC), agile methodologies, and client management. Demonstrates solid technical project management skills, aligning business objectives with innovative technical strategies. Holds an MSc in IT with outstanding academic achievements, underpinned by a solid foundation in programming languages and software engineering principles.

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.NET
C#
JavaScript
TypeScript
ADO.NET
ASP.NET
ASP.NET Core Framework
ASP.NET MVC Pattern
Entity Framework
.Net WCF
SignalR
WPF
Angular
jQuery
React
Vue.js
CSS
HTML
Microsoft SQL Server
MongoDB
MySQL
PostgreSQL
RDBMS
Redis
SQL Server Management Studio
Azure
Azure DevOps Server (ex TFS Team Foundation Server)
Team foundation server
DirectX
RESTful API
Web API
Winforms
Git
SVN
OData (Open Data Protocol)
Visual Studio
RabbitMQ
SOAP
VSTS
Windows
Clickonce
Hg
Microsoft XRM
MSMQ
OpenGL
WinServices
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- .NET Software Engineer with 4 years of software development experience in different domains (FinTech, Real Estate, E-Commerce). - The biggest part of the experience is related to the .NET platform - Upper-Intermediate English - Available from 11.07.2022

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Seniority Middle (3-5 years)
Location Lviv, Ukraine
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