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.
Scala 5yr.
Python
Java
AWS
AI
Akka
Apache Spark
Apache Flink
Scala SBT
Scala Tapir
Scalatest
Hibernate
Spring
Spring Boot
React
Cassandra
Clickhouse
MongoDB
MySQL
Oracle Database
PostGIS
PostgreSQL
Redis
RocksDB
Slick database query
SQL
Azure
GCP
Amazon RDS
AWS S3
AWS SQS
GCE
Agile
microservices
REST
Scrum
Apache ActiveMQ
Kafka
Apache Maven
JUnit
Apache Tomcat
Docker
Kubernetes
Facebook Auth
GitLab CI
Gradle
Helm
Jenkins
Grafana
Prometheus
Splunk
Release Management
Data pipeline design
...

- 12 years of experience in backend development, including leadership roles in cross-functional teams; - Expertise in Scala, Python, and Java (with knowledge of functional programming principles); - Experience in system architecture improvements, leading teams, and developing scalable solutions; - Expertise in PostgreSQL, Oracle DB, MongoDB, and SQL; - Cloud environments such as AWS including performance and scalability optimization; - Docker and Kubernetes for container orchestration; - Apache Kafka for building event-driven architectures; - Led AI-driven projects in areas such as resume parsing, payroll automation, and learning management;

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Seniority Expert (10+ years)
Location Malaga, Spain
FPGA
VHDL
C/C++/C#
Python
Embedded Systems
Ant Design
HTML/CSS Preprocessors
CodeIgniter 3+
MS SQL Server Management Studio
DigitalOcean
Fastly
DSP
3D Modelling
AES
Encryption
Altium
Labview
MathCAD
MatLab
Vivado
ASIC
MCU
STM32
Clean Architecture
Cryptography
USB
CAD
CKDF
CMOS Sensors
Convolutional Filtering
Digital Beam Forming
Docker Machine
ECDSA
ECHD
FFT
MAC Algorithm
PCB Design
Phased Scanning
Quartus
RIPEMD
RSA
SHA256
SHA-3
SHA3
SoC FPGA
USB 3.0
XILINX
...

- Seasoned FPGA and embedded systems engineer with 10+ years of experience, and a track record of architecting and implementing complex hardware and software solutions; - Expert knowledge in VHDL, FPGA, CPLD, MCU, and SoC development, with proficiency in tools like Intel(Altera), Xilinx, and Modelsim; - Strong expertise in cryptographic acceleration, RADAR systems, digital signal processing, and PCB design; - Experience in leading a development team for a cryptography acceleration project and implementing advanced algorithms in various domains; - Robust background in electronic device development and embedded programming in C and Python.

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Seniority Expert (10+ years)
Location Kyiv, Ukraine
CI/CD
Mulesoft
Salesforce
B2C Commerce Cloud
JavaScript
Async Apex
Salesforce Lightning Component
CSS3
HTML5
jQuery
Azure
API
Flows
Front-End Web Development
...

We have an exceptional full-stack developer with over 10 years of specialized Salesforce experience, particularly strong in B2C Commerce solutions. This candidate has successfully delivered enterprise e-commerce platforms for clients across multiple industries, handling both complex back-end architecture and user-facing front-end development.Key Qualifications for Your Project Salesforce Expertise: Extensive experience across Service Cloud, Sales Cloud, Financial Services Cloud, Communications Cloud, and Marketing Cloud, enabling comprehensive platform integration. B2C Commerce Specialization: Proven track record in building custom integration solutions, including SFTP server connections, third-party service frameworks, LINK integrations, and payment processor cartridges for Adyen and Rakuten. Leadership Background: Brings valuable management experience from the power generation industry and e-commerce business ownership, providing both technical depth and business perspective. Team Collaboration: Known for maintaining calm under pressure, inspiring team members, and delivering results in both small agile teams and large enterprise environments. This developer combines deep technical expertise with strong communication skills and a collaborative approach, making them an ideal fit for complex Salesforce B2C Commerce implementations.

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Seniority Expert (10+ years)
Excel 3yr.
WordPress
Canva
Jotform
seo
Ant Design
HTML/CSS Preprocessors
Data Analysis
MS SQL Server Management Studio
AWS
API First
FreeBSD
NFT marketplace
Self-Awareness
Illustration and icons
One drive
...

The software engineer possesses a strong foundation in IT and administration with experience in website development and digital marketing. They are proficient in WordPress, SEO, Canva, and various computer networking basics. The candidate excels in collaborative environments, having managed farm operations and IT support, demonstrating leadership in diverse roles. Skilled in aligning business requirements with technical solutions, they have a history of contributing to organizational growth through innovative problem-solving. Notably adept at digital marketing strategies, the engineer's skill set is also finely tuned in office administration and industry awareness.

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NLP 6yr.
LLM
AI
ChatGPT
GPT
Hugging Face
LangChain
LlamaIndex
OpenAI
PyTorch
Scikit-learn
Spacy
C++
Python
Boost C++
FastAPI
Pandas
Power BI
Vector
FireStore
MongoDB
PostgreSQL
SQL
Vector DB
AWS
Azure
GCP
Google BigQuery
Adtech
Banking
STL
ViennaCL
...

- Highly experienced Head of Data Science with 12+ years of experience in creating and managing DS/ML teams in startups and corporate projects; - Proficient in AI, NLP, Adtech, Fintech, and CV; - Strong leadership skills and a client-oriented approach; - Skilled in Python, SQL, Prompt Engineering, HuggingFace, PyTorch, Scikit-learn, Pandas, LangChain, LlamaIndex, Spacy, GPT, Plotly, GCP, AWS, Azure, Postgre, MongoDB, BigQuery, and Vector DB; - Proactive in implementing innovative approaches for product features using Generative AI, LLM, and GPT; - Experienced in proposing innovative solutions for new business problems and managing teams; - Holds a PhD in Data Science and a Master's degree in Computer Science.

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Seniority Expert (10+ years)
Location Portugal
JavaScript
TypeScript
Python
SQL
C/C++/C#
Temporal
OpenAI
leveldb
MySQL
PostgreSQL
Redis
API
Docker
Ffmpeg
Git
IPFS (InterPlanetary File System)
Linux
Postman
Prometheus
WebSockets
InterPlanetary File System
Vast
Wasabi
...

The engineer is a proficient Full-Stack Developer and R&D Engineer with a core focus on cutting-edge technologies encompassing JavaScript, TypeScript, Python, SQL, and C++. They have demonstrated expertise in frameworks and technologies like NestJS, Node.js, React.js, Next.js, Blockchain, and Cosmos SDK, coupled with strong database skills in PostgreSQL, MySQL, Redis, and LevelDB. With extensive hands-on experience in DevOps & tooling such as Docker, Git, Linux, Prometheus, and Grafana, the engineer has successfully designed and developed high-availability full-stack applications. Their professional experience includes leading feature development to shorten time-to-market and significantly improving system performance and stability through strategic optimizations. The engineer's deep understanding of RESTful APIs, microservices architecture, and workflow orchestration underscores a commitment to technical excellence in software development practices. Notable achievements include architecting critical blockchain integrations and real-time data streaming functionalities for varied user-intensive platforms. Holding a B.Tech in Computer Science from Medicaps University with a notable academic record further anchors their theoretical understanding and practical application of software engineering principles, securing the foundation for continued professional growth and contribution to technology innovation.

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Seniority Junior (1-2 years)
Infor M3 12yr.
ION 5yr.
Infor
Java
SalesForce Workflow
Azure Eventhub
Azure log analytics
QA Automation
Scrum
troubleshooting
IdM
IEC
Intrastat
MEC
...

- Over a decade of experience as a Software Engineer, specializing in ERP systems, particularly Infor M3, across various industries. - Proficient with Infor M3 Cloud Services, ION, MEC(IEC), IDM, and leading integration processes, including optimizing IEC performance and developing ION API endpoints, with a proven track record of reducing latency and maintenance costs. - Recognized technical acumen in Java, EDI, XML, ERP, SQL, LCM, XSLT, alongside expertise in system support, maintenance, and deployment. - Excellent background in Information Technology with a Bachelor of Science degree, complemented by Infor OS Associate Certification and ongoing professional development through industry-relevant training. - Acknowledged for leadership and mentoring abilities, with a history of enhancing team productivity and fostering a culture of continuous learning. - Awarded the 'Most Valuable Player' for outstanding contributions, demonstrating a strong commitment to achieving team success and project excellence.

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Seniority Expert (10+ years)
Location Antipolo, Philippines
PHP 15yr.
Laravel 10yr.
Symfony
PostgreSQL
Spryker
JavaScript
CSS
HTML
Git
Github Actions
GitLab CI
Jira
Kafka
...

Senior PHP Back-end Developer with a strong background in computer science and extensive expertise in the Laravel and Symfony frameworks, boasting over 15 years in the industry and mastery in full-stack technologies. Proficient in database management with MySQL and PostgreSQL, and skilled in the use of design patterns, SOLID principles, and OOP to enhance software architecture and code quality. Demonstrates advanced knowledge in implementing and optimizing REST APIs, Kafka message brokering, and pioneering large-scale data operations. Experienced in fostering agile and TDD methodologies to drive continuous integration and delivery, underscoring technical leadership through mentorship and development of innovative web applications.

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Seniority Expert (10+ years)
React Native 5yr.
React 5yr.
TypeScript 5yr.
JavaScript 5yr.
Redux 5yr.
Crashlytics
Google Analytics
Creative Product
Critical Thinking
Leadership
UI/UX Design
WebRTC
EAS
Problem-solving
Teamwork
...

Accomplished Software Engineer with 5 years of in-depth experience in mobile and software development primarily focused on React Native, ReactJS, and TypeScript. Demonstrated proficiency in leveraging advanced JavaScript technologies such as Redux and ES6 to build robust mobile applications. Led a technical team and mentored engineers in creating market-centric apps and websites, ensuring adherence to best practices in software development. Key project contributions include the implementation of react-native-firebase for notifications and analytics, and development of complex features for barcode and RFID reader applications. The engineer's academic background in Information Technology fortifies their technical expertise, and a penchant for continuous learning in mobile programming underpins their evolving mastery of the software engineering domain.

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Seniority Senior (5-10 years)
Location Yerevan, Armenia
React Native
React
JavaScript
TypeScript
HTML/CSS Preprocessors
C/C++/C#
Crashlytics
CSS
Tailwind CSS
Formik
React Navigation
Redux
Redux-Saga
Svelte
Cloud Firestore
Vercel
Google Maps API
GraphQL
RESTful API
SVG
...

Accomplished Senior React Native Developer with a solid 7-year track record in mobile application development, underpinned by a bachelor's degree in Computer Science and Engineering. Expert command of React Native, JavaScript, and TypeScript, complemented by proficiency in leveraging ancillary technologies such as Redux, Firebase, and RESTful services. Demonstrated prowess in modern software engineering practices, including unit testing, code reviews, SDLC, and agile methodologies. Adept at fostering junior developers' growth while navigating complex project ecosystems and enhancing app performance and user experience, distinguishing themselves as a potent candidate for technology-driven roles.

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Seniority Senior (5-10 years)
Location Tashkent, Uzbekistan
JavaScript
React
TypeScript
Node.js
Redux
Hugging Face
Bootstrap 4
CSS
CSS3
HTML
HTML5
SASS
Tailwind CSS
Express
Ext JS
Redux-toolkit
TestCafe
MongoDB
PostgreSQL
AWS
API
RESTful API
Chai
CI/CD
Cypress
Jest
Git
Git submodules
Research Skills
STLC
...

A senior software engineer with over 6 years of full-stack experience specializing in React, TypeScript, and Node.js. This engineer has a proven track record of enhancing user engagement and retention through innovative UI design and application development. Their technical proficiency is demonstrated by significant contributions to a SaaS startup, including a 20% customer retention increase, and internal tooling that improved staff participation and satisfaction. Holding a Bachelor's in Computer Science and pursuing an Executive MBA with an AI specialization, they combine strong educational foundations with practical expertise in JavaScript frameworks, API integrations, and developing scalable, performance-optimized features. Strategic projects like the AI-powered skill assessment app illustrate their ability to leverage cutting-edge technologies to deliver impactful solutions.

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Seniority Senior (5-10 years)
Location Lagos, Nigeria
JavaScript
TypeScript
Express
WebRTC
GCP
Dash
Node.js
React
React Native
AWS
Azure
GCP BigQuery
Docker
HLS
Angular 2
Oracle VM
RabitMQ
...

Experienced Software Engineer with over 14 years of commercial development experience. Strong expertise in object-oriented programming, full-stack development, and cloud architecture. Proven leadership in managing both small and large engineering teams. Committed to delivering high-quality, scalable, and efficient software solutions across diverse platforms.

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Seniority Expert (10+ years)
Location Lviv, Ukraine
.NET 12yr.
.NET Core 6yr.
Angular
PSQL
SQL
...
Seniority Senior (5-10 years)
Location Ho Chi Minh City, Vietnam
Python
OpenAI
RAG
Azure ML
AI
Amazon Machine learning services
AWS ML (Amazon Machine learning services)
AWS SageMaker
AWS SageMaker (Amazon SageMaker)
Azure AI Vision
Azure OpenAI
FCN
GenAI
GPT
LangChain
LSTM
Nvidia DeepStream SDK
Nvidia Holoscan SDK
ONYX
OpenCV
Pinecone
PyTorch
TensorFlow
ViT
VITS
Whisper
YOLO NAS
C#
C++
Akka Streams
Chrome Extensions
Gstreamer
Express
Node.js
React
Flask
Redux
Redux-Saga
Salesforce
Spring
Spring Security
Business Intelligence (BI) Tools
Databricks
ML
ChromaDB
Cosmos DB
ORM
Redis
AWS
Nvidia AGX
Nvidia IGX
AWS EC2
AWS Lambda
AWS S3
Azure Blob Storage
Azure Functions
Microsoft Azure API
Atlassian Trello
Jira
Celery
Kafka
RabbitMQ
CI/CD
Jenkins
Docker
Kubernetes
JWT
RESTful API
Nvidia
Calypso
Payanote
...

- Senior AI/ML engineer with hands-on experience in GenAI platforms, LLM orchestration, and RAG pipelines; - Skilled in Python and C# for backend services, chatbot architecture, and AI integration pipelines; - Built and deployed RAG systems using Azure OpenAI, AI Search, and LangChain; - Developed Whisper-based transcription pipelines with speaker diarization for business meeting summarization; - Integrated OpenAI models and multimodal embeddings into workflow automation tools like Jira and Trello; - Experience in distributed processing with Celery, RabbitMQ, and Redis for asynchronous task execution; - Deployed scalable AI services in Azure and AWS environments, using Kubernetes, Helm, and Azure DevOps; - Built real-time event processing and notification systems using Kafka and Apache Camel; -Designed APIs and backend services for customer support chatbots, voice platforms, and CRM integration; - Applied prompt engineering, testing (xUnit, pytest), and CI/CD automation across multiple AI initiatives.

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Seniority Senior (5-10 years)
Location Kyiv, Ukraine
Angular
React
MongoDB
AWS
TypeScript
JavaScript
AngularJS
Backbone.js
Express
NestJS
Node.js
Angular Material UI
Bootstrap
Electron
LoopBack
Polymer
React Native
Flutter
Ionic
MySQL
AWS Amplify
AWS S3
GraphQL
...

- Experienced full-stack developer with 13 years of experience in software development - 6+ years in top-level and lead positions. - Proficient in organizing work, delegating tasks, and leading by example to accomplish team goals. - Adept in problem-solving, managing project progress, and communicating progress to stakeholders. -Skilled in coaching and motivating team members to improve their skills and reach their full potential. -Well-versed in Angular, Angular.js, Angular Material, React, Bootstrap, Node.js, Express, Nest.js, Loopback, MySQL, MongoDB, GraphQL, AWS, AWS S3, AWS Amplify, Electron, Ionic Framework, Flutter, and React Native.

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Seniority Senior (5-10 years)
Location Ukraine
Next.js
NestJS
Spring Boot
...

Good hands on NextJS, NestJS

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Seniority Junior (1-2 years)
Location Nagpura, India
.NET
React
Azure
C
C#
C++
Java
PHP
Python
Rust
TypeScript
VBA
Angular
jQuery
ASP.NET
ASP.NET MVC Pattern
Entity Framework
.NET Framework
nuget
WPF
CSS
HTML
MySQL
PostgreSQL
SQL
AWS
GCP
Azure DevOps
Azure MSSQL
Hyper-V
Google Cloud AI
Agile
MVC
OOP
Scrum
SOAP
Android
API
Web API
Azure DevOps Server (ex TFS Team Foundation Server)
BitBucket
Git
GitHub
GitLab
SVN
CI-CD Pipeline
DevOps
Octopus Deploy
SonarQube
TeamCity
Zero downtime deployment
Docker
Kubernetes
Terraform
Excel
iOS
Linux
Windows
PowerShell
Project Management
QA
Xamarin
EPPlus
Sitecore
XlWings
...

- Full-Stack .NET Engineer with 16 years of experience developing innovative products and leading teams and companies in the IT sector. - Has 6+ years of experience working with payment systems integrating MasterCard, Visa, Payoneer, and PayPal into the user's programs. - Has 4 years of experience with Sitecore in different domains like Hospitality, Tourism, and Automotive. - Expertise in system architecture, analytics, optimization, DevOps - Proficient in C# and .NET framework, with extensive experience in ASP.NET Core, Blazor, and Electron.NET. - Strong background in implementing DevOps practices, including continuous integration and continuous deployment (CI/CD), version control using Git, and automation with tools like Jenkins and Azure DevOps. - Led and managed teams in various roles such as Team Lead, Architect, and DevOps. Demonstrated leadership skills in defining goals, assigning tasks, and ensuring project success.

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Seniority Expert (10+ years)
Location Spain
Node.js
React
AWS
GCP
CoPilot
OpenAI
JavaScript
TypeScript
CSS3
HTML5
Material UI
ShadCN
Tailwind CSS
Expo
React Native
Redux
Redux-toolkit
SWR
Vite
Zustand
Express
NestJS
Next.js
AWS DynamoDB
Firebase
FireStore
MongoDB
MySQL
PostgreSQL
Redis
SQL
SQLite
Supabase
Azure
Crossmint
DigitalOcean
Heroku
Vercel
AWS API Gateway
AWS Cognito
AWS Lambda
AWS S3
AWS SNS
Serverless Framework
Android
Headless CMS
Sanity CMS
Api Gateway
Google Auth
GraphQL
JWT
OAuth
RESTful API
Stripe
Apple Auth
CRUD
microservices
REST
SSR
Docker
Git
GitHub
iOS
Jest
Sanity Testing
WebSockets
RainbowKit
...

- 5+ years in web and mobile development (Node.js, NestJS, Next.js, React); - AWS and GCP clouds, including Serverless Framework for serverless app deployment; - PostgreSQL, MongoDB, Docker, and microservice-based architecture; - Delivered real-time features using WebSockets for game logic and session state, REST and GraphQL APIs with Express.js and NestJS; - Experience with billing, auth, and dashboard modules for SaaS, fitness, and e-commerce platforms. Integrated Stripe and Google/Auth for billing and authentication; - Applied CI/CD, unit testing, and agile workflows across all projects

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Seniority Senior (5-10 years)
Location Ukraine
JavaScript 5yr.
Node.js 5yr.
React 5yr.
TypeScript
NestJS
MongoDB
PostgreSQL
AWS
CI/CD
Docker
GraphQL
REST
serverless
...

Vladyslav S. is a Senior JavaScript Developer with 6+ years of experience specializing in React.js, React Native, and Node.js. Experienced with AWS services (Lambda, ECS, RDS, DynamoDB), Firebase, Terraform, and CI/CD pipelines (GitHub Actions, Docker). Proficient in REST APIs, state management (Redux, MobX), and modern frontend frameworks like Next.js and Angular. Strong team collaborator with clean code practices and a focus on scalable architecture.

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Seniority Senior (5-10 years)
Location Ukraine
Quadient Inspire
...

I am a Quadient developer looking for job in Netherlands. I have 9 years of relevant exp and immediate joiner

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Seniority Senior (5-10 years)
Location Voorburg, Netherlands
Python
ML
LLM
AutoGPT
AWS SageMaker (Amazon SageMaker)
GPT
JAX
LangChain
OpenAI
OpenCV
PyTorch
RAG
Scikit-learn
T5
TensorFlow
Vertex AI
Java
Apache Spark
Dash
Matplotlib
NLTK
Plotly
Seaborn
Air ow
Apache Hive
DVC
Microsoft Azure Synapse Analytics
Power BI
Tableau
AWS Redshift
Clickhouse
ELK stack (Elasticsearch, Logstash, Kibana)
HDFS
AWS
Azure
GCP
AWS Lambda
Dataproc
Google BigQuery
DevOps
Docker Compose
Kubernetes
Github Actions
Grafana
CycleGAN
DALL·E 2
f
Few-Shot learning
fl
Flink
Hugging Face Transformers
Kube ow
LLM Agents
Looker
ML ow
ML Studio
Prompt Tuning
Snow ake
Stable Di fusion
Summarization
TFX
YOLO
...

* Machine Learning Engineer with over six years of experience in AI and machine learning. * Specializes in recommendation systems, predictive analytics, and computer vision solutions. * Experience with predictive models for demand forecasting and property valuation, optimizing inventory and decision-making processes.

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Seniority Senior (5-10 years)
Location Poland
.NET
React
Angular
C#
JavaScript
TypeScript
ADO.NET
ASP.NET
ASP.NET Core Framework
ASP WebForms
Entity Framework
.NET Core
.NET Framework
WPF
jQuery
Node.js
Vue.js
Bootstrap
CSS
HTML5
NgRx
Vuetify
AWS Redshift
Cassandra
Microsoft SQL Server
MySQL
AWS
Azure
AWS EB (Amazon Elastic Beanstalk)
AWS EC2
Azure DevOps
Azure Gateway
GRPC
Kafka
Kubernetes
microservices architecture
MVC
Octopus Deploy
OpenTelemetry
PayPal API
Stripe
EF Core
Protobuf
Razor Pages
RX.js
ScyllaDB
...

- Full-stack web developer with more than 9 years of commercial experience. - Has worked on a wide range of projects, including financial remittance systems, medical appointment websites, and payment systems for electronic document exchange services. - Has experience working with a range of technologies including ASP.NET Core, .NET Core, EF Core, TypeScript, Node.js, Microservices, Kafka, Azure, AWS, Angular, React, Vue.js, and WPF. - Strong bug-fixing skills and experience with DevOps responsibilities. - Upper-Intermediate English

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Seniority Senior (5-10 years)
Location Lviv, Ukraine
PHP 5yr.
Node.js 5yr.
MySQL 5yr.
JavaScript 5yr.
PostgreSQL
Python
TypeScript
Ant Design
API
Code Review
Git
microservices architecture
Data Migration
Optimism
...

Software Engineer with 5+ years of backend development expertise, focusing on API construction, microservices management, and database performance optimization. Proficient in PHP, Node.js, NestJS, JavaScript, TypeScript, MySQL, and PostgreSQL. Holds a Bachelor degree in Science and has worked on enhancing Shopify web applications and designing scalable backend infrastructures. Known for optimizing MySQL queries to increase performance and improve server stability under high load conditions, resulting in more efficient and maintainable systems.

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Seniority Middle (3-5 years)
Location Surat, India
JavaScript 5yr.
React 5yr.
Node.js 5yr.
Python 5yr.
TypeScript 3yr.
Amazon Machine learning services
AWS ML (Amazon Machine learning services)
TensorFlow
AWS EC2
AWS Elastic Kubernetes Service (EKS)
AWS Lambda
AWS S3
Google Maps API
GraphQL
AWS Elastic Kubernetes Service
RDS
...

Lead Full Stack Developer with 5+ years of experience specializing in developing scalable web applications and architecting cloud-native solutions. Extensive experience with a wide range of technologies like JavaScript (ES6+), TypeScript, Python, React.js, Node.js, AWS, and DevOps tools including Docker and Kubernetes. Proven track record in leading teams, improving system performance, and integrating advanced security measures. Holds a strong background in Computer Science with a high GPA and certifications in AWS and Google Cloud. Recognized for contributions to the tech community and excellence in optimizing real-time systems.

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Seniority Middle (3-5 years)
Location Islamabad, Pakistan
JavaScript 6yr.
React 6yr.
Go
Node.js
React Native
CSS 6yr.
HTML 6yr.
Git 6yr.
Github Actions 6yr.
RESTful API 6yr.
Bootstrap 4
Material UI
Socket.io
Tailwind CSS
Crashlytics
Express
mui
MongoDB
PostgreSQL
Vercel
CircleCI
Cypress
Dapp
MetaMask
NFT
GraphQL
GRPC
microservices
...

A seasoned Full Stack Developer brings over six years of experience, specialized in JavaScript, Golang, and React Native, with profound knowledge of modern frameworks like NextJS and NestJS. Proven track record in leading projects from inception to launch, showcased through success in diverse domains such as Legal Tech, AgriTech, and Health. Demonstrates expertise in writing efficient, optimized code, backed by the ability to guide design efforts and manage installations for on-time product rollouts. Familiar with CI-CD pipelines, evident from setting up CircleCI, and skilled in complex technology ecosystems, including Microservices, Kubernetes, Docker, and AWS. Adept at full lifecycle software development practices, integrating various technologies with a focus on robust, scalable web and server solutions.

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Seniority Senior (5-10 years)
JavaScript
TypeScript
React
Angular
Express
NestJS
Node.js
Cordova
Ionic
CSS
HTML
SASS
SCSS
Mongoose
React Native
Redux
Redux-Saga
Redux-toolkit
RxJs
MongoDB
AWS
AWS Cognito
AWS Lambda
AWS S3
AWS SAM
Api Gateway
Azure DevOps Server (ex TFS Team Foundation Server)
Cypress
Jest
Git
serverless
WebStorm
...

- 8+ years of experience in software development with a focus on JavaScript, TypeScript, and full-stack engineering; - Built complex web applications using React.js, Angular, and React Native across edtech, healthtech, e-commerce, and banking projects; - Developed cross-platform interfaces, including AI-powered chatbots with Whisper and Heygen, and real-time messaging platforms; - Worked with Redux Toolkit, RxJS, Nest.js, and Express for scalable state management and backend logic; - Delivered serverless APIs using AWS Lambda, API Gateway, Cognito, and integrated MongoDB via Mongoose; - Experienced in performance optimization, refactoring, bug fixing, and CI/CD using the Serverless Framework; - Built and maintained responsive UIs with accessibility, mobile support, and data visualization features; - Participated in team-based delivery with cross-functional collaboration and code quality improvements.

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Seniority Senior (5-10 years)
Location Krakow, Poland
.NET
C
C#
C++
JavaScript
TypeScript
ADO.NET
ASP.NET MVC Pattern
ASP.NET WebForms
Entity Framework
Mono
.NET Core
.Net WCF
Ajax
Bootstrap
CSS
DHTML
DOM
HTML
jQuery
XML
Angular
AngularJS
Express
Node.js
ATL
Cordova
Ionic
MFC
NHibernate
Microsoft SQL Server
MongoDB
MySQL
Redis
AWS
AWS RDS (Amazon Relational Database Service)
AWS S3
Azure DevOps
Azure VM
Active Directory
STL
Visual Studio
Windows
Windows API
Winforms
Xamarin
AJAX Control Toolkit
COM
DirectShow
ES2
Fluent Validation
GDI
GDI+
IBM PC compatible
LINQ to SQL
OM
ypeScript
...

- Full-stack software developer with 15 years of experience - Expert in C#, asp.net, asp.net MVC, .net core, native JS, Jquery, Angular 1 and 2+ generation, and other technologies in the web development stack. - I have experience in C\C++, WinApi, COM, MFC and other technology stacks and I can work with the intersection of these technologies - My experience includes team and technical management, mentoring, and project management for new teams - Industries: Logistics and transportation, business intelligence, insurance and reinsurance, healthcare, government, information technology and services, professional services, computer software. - Upper-intermediate English

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Seniority Senior (5-10 years)
Location Budva, Montenegro
HTML
CSS
JavaScript
Node.js
MongoDB
Bootstrap 4
Express
Mongoose
Git
Github Actions
Microsoft Visual Studio Code
RESTful API
...

Software engineer with practical experience in full-stack web development, encompassing HTML, CSS, JavaScript, Node.js, and MongoDB. Proven track record with internships at CodeCraft Solutions and Nestsoft Technologies, demonstrating strong initiative, self-motivation, and real-world project management. Robust educational foundation with a Bachelor's in Computer Applications plus a specialization in Cyber Security. Developed a Master Study Portal project, showcasing skills in front-end and back-end development, RESTful API integration, and database management using Mongoose. Competent in version control with Git, and proficient with modern development tools such as GitHub and VS Code. Technical skill set further includes Bootstrap, Express.js, and REST API development.

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Seniority Intern
Location Romania
Delphi
AWS
Salesforce
Salesforce AppExchange
C/C++/C#
Express
ETL
Power BI
Talend
Azure Blob Storage
Allure Report
Eclipse
Microsoft Visual Studio Code
Git
SourceTree
IEEE 1394
Jira
FireDAC
InterBase
UPS
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Software engineer possesses robust problem-solving skills and experience in writing scalable code. Specializes in Delphi RAD Studio, with hands-on experience in ETL operations and third-party integration (Kawasaki, Honda, Briggs & Stratton, etc.). Brings proficiency in Azure Cloud Services, Salesforce (Admin + Developer), and diverse programming languages including C and C#. Holds certifications in Salesforce Platform Developer I, Azure Developer Associate, and Azure DevOps Expert. Educational background includes a BS in IT and an M.Sc in Criminology & Security Studies. Over 4 years of experience as a Senior Software Developer and adept in SMS/Email systems, payment gateways, and accounting software integrations.

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Seniority Senior (5-10 years)
Location Lahore, Pakistan
Elixir Phoenix 5yr.
PostgreSQL 5yr.
Ruby on Rails 2yr.
Neo4j 2yr.
React
MySQL 2yr.
Go
Rust
LLM
Angular
Apex DataLoader
Fastly
GCP
AWS S3
Azure Blockchain
Ansible
Cryptography
ETH (Ethereum blockchain)
GraphQL
SOLID
XCUITEST
jsQR
Oban
...

An adept Senior Software Engineer with a strong background in Elixir/Phoenix, robust API development, and systems scalability. Engineered the 'Wukong API Proxy' to streamline deployment timelines at Mindvalley, resulting in significant reduction of developer wait times. Skillfully managed Robu Sdn Bhd’s software team, developing its B2B2C platform and ensuring efficient cloud-based deployments. At Fave, excelled in site reliability while transitioning infrastructure from AWS to GCP and enhanced web app performances via Elixir optimizations. With a Bachelor's in IT from Universiti Teknologi Petronas, the candidate demonstrates a solid grasp of software development. Emphasizes AI-assisted workflows, mastering languages like Ruby on Rails, Elm/React, and Rust, and diversifies with a foundational understanding of cryptography and blockchain technologies.

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Seniority Senior (5-10 years)
Location Kuala Lumpur, Malaysia
PHP 11yr.
Symfony 11yr.
PostgreSQL
MongoDB
AWS
API
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Expert with PHP, Symfony, Relational and No-SQL databases. Hands on AWS, Gitlab Ci/CD

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Seniority Expert (10+ years)
Team Leadership 5yr.
ITIL 7yr.
Business Analysis 5yr.
Unit Testing 5yr.
Jasperreports
Spring
Celonis
Oracle Database
Stripe
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Software engineer with over 20 years of experience in core banking system implementations and integrations, with a strong background in computer science and business administration. Expertise in leading integration teams, developing system functionalities and managing end-to-end project deliverables. Proven track record in supervising technical teams, engaging with business stakeholders, and providing solutions within the financial services industry. Hands-on experience with Temenos OFS, CRPL Cash Management, and Oracle Financials, evidenced by successful project completions. Adept in SDLC, Agile methodologies, and possess ITIL and PMI-ACP certifications, signifying a commitment to best practices and continuous improvement in the IT sector.

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Seniority Expert (10+ years)
MS SQL Server Management Studio
Unreal Engine
Linea
Azure VM
PHP
Express
Node.js
React
Java SE
Business Intelligence (BI) Tools
MongoDB
MySQL
Agile
Clean Architecture
FDD
MERN stack (MongoDB, Express, React, Node)
Tools
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Seasoned Head of Engineering with 8+ years of experience in driving technical strategy and leading multidisciplinary development teams. Expertise in AI, blockchain, and full-stack custom software solutions including MERN stack, PHP, and MySQL. Proven track record at Macromodule Technologies, shaping engineering culture with agile principles and maintaining focus on delivering business-aligned, future-ready software products. Holds a Bachelor of Science in Computer Science and has previously elevated backend systems at Dtech Systems and spearheaded full-stack projects at ArhamSoft. Known for integrating emerging technologies and establishing engineering KPIs that foster continuous improvement and technical excellence.

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Seniority Expert (10+ years)
Kubernetes
Terraform
Docker
AWS
AWK
PHP
ASP
HTML
InfluxDB
Momentum
MongoDB
MySQL
Oracle Database
PostgreSQL
PowerMTA
Quagga Inspections Database
Azure
DataPipe
Rackspace
Softlayer
AWS Auto Scaling
AWS CloudFront
AWS CloudTrail
AWS CloudWatch
AWS EC2
AWS ECR
AWS ECS (Amazon Elastic Container Service)
AWS Elastic Kubernetes Service (EKS)
AWS IAM
AWS RDS (Amazon Relational Database Service)
AWS Route 53
AWS S3
AWS SES (Amazon Simple Email Service)
AWS SNS
AWS VPC
AWS WorkSpaces
Azure Resource Groups
Azure VM
Ansible
CI/CD
CI-CD Pipeline
Jenkins
Apache HTTP Server
Apache Tomcat
JBoss
Nginx
Oracle WebLogic Application Server
squid
Asterisk
Gentoo
Bash
CLI
Perl
Regexp
BIND
bsnmp
DHCP
DNS
Dovecot
FTP
IPFilter
ipfw
IP-PBX
IPTable
isc-dhcp
mrtg
MTA
net-snmp
nfs
Packet Filter
PfSense
POP3
Postfix
proftpd
Proxy
Samba
SNMP
TFTP
VPN
BitBucket
Git
GitLab
Perforce
SVN
Cacti
Cadvisor
check_mk
Monit
Nagios
Prometheus
smokeping
Debian
FreeBSD
Linux
Mandriva
RedHat
Ubuntu
Windows
Docker Swarm
OpenConnect
Openswan
OpenVPN Access Server
OpenVZ
XEN
Jira
Sendmail
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- More than 15 years of experience in IT; - 4+ years of experience as a DevOps engineer; - 4+ experience with Kubernetes, Docker, and Terraform; - Good understanding of AWS Cloud Platform; - 2+ experience with Grafana; - Creating new development environments in the AWS cloud; - Deep skills in creating new development environments in the AWS Cloud; - Experience with migration to AWS; - Good knowledge of creating infrastructure and Security levels on AWS; - Experience working with databases; - Good skills in working with high loads; - ASAP

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Seniority Senior (5-10 years)
Location Ukraine
Java 21yr.
Spring 21yr.
databases 21yr.
Keycloak 3yr.
Blockchain 2yr.
1C 21yr.
React 9yr.
Spring Boot
Struts 2
Redis
Snowflake
AWS
AWS Lambda
BSC
NFT marketplace
FDD
Observer
Scrum
UI/UX
Dotnet core
IOT
OOAD
Oracle Fusion Middleware
OSB-SOA
POC
Unreal Engine
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Seasoned software engineer with over 21 years of industry experience, specializing in Java enterprise architectures and full-stack development. Known for executing robust back-end systems using frameworks like Spring, with prowess in front-end technologies like React. Demonstrated expertise in adapting and implementing SOA, REST, and design patterns, which enhance software design and problem-solving effectiveness. Strong history of engaging in complex projects, including NFT marketplaces and web analytics systems using diverse technologies (AWS, SOLR, Lambda). Proven record of delivering end-to-end solutions from architecting secure authentication infrastructures to crafting real-time mobile apps for contact tracing. Educated in Electrical, Electronics, and Communications Engineering, leveraging a deep understanding of the software development lifecycle and agile methodologies to lead multidisciplinary projects successfully.

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Appium
Selenium
CI/CD 10yr.
Groovy
Java
JavaScript
TypeScript
ELK stack (Elasticsearch, Logstash, Kibana)
Firebase
Azure DevOps
Allure
Apache Maven
API testing
Cucumber
Cypress
Fiddler
JMeter
JUnit
Mobile Testing
Playwright
Protractor
QA
Selenide
Selenium Grid
Selenium Webdriver
Selenoid
TestNG
UI testing
WebdriverIO
WEB testing
Android
Asana
Atlassian Confluence
Jira
Slack
GitLab CI
Gradle
Jenkins
TeamCity
Git
GitHub
Mercurial
SVN
IntelliJ IDEA
iOS
Linux
Windows
Report Portal
Rider
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Highly experienced software engineer with over 10 years in QA, leading various QA teams and projects. - Expertise in testing automation tools Appium, Selenium, Cypress, WebDriver, and Protractor; - Experience with Java, Groovy, JavaScript, and TypeScript; - Skilled in creating test automation frameworks for Web UI/API/Mobile platforms; - Proficient in developing test documentation such as test plans, test cases, and incident reports; - Good understanding of systems development life cycle methodology and QA methodology and tools; - Strong knowledge of CI environment configuration and different operating systems (Windows, Linux); - Ability to quickly learn new technologies and approaches and implement them effectively.

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Seniority Senior (5-10 years)
Location Poland
bug fixing
Parsers
Unix
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Software engineer with over 27 years of experience, specializing in RDBMS and system software design. Core expertise in developing features and bug fixes for MySQL, including authorship of client-server protocol, lexer, parser, and SQL commands. Proficient in C, C++, and SQL with a demonstrated history of improving software performance and security, evident by contributions to MySQL's client-server protocol deployed in NASA's Mars Rover mission. Notable milestones include a groundbreaking symbol resolution method soon to be published in Springer's 'SN Computer Science' journal and multiple MySQL awards, including 'MySQL Rock Star 2025'. Holding a Bachelor of Sciences from the Institute of Technology, University of Belgrade, with a diverse language skill set and a portfolio of open-source contributions.

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Seniority Expert (10+ years)
AWS 5yr.
Azure 5yr.
TensorFlow 5yr.
Google PageSpeed Insights
Python Requests Library 5yr.
Amazon Machine learning services
AWS ML (Amazon Machine learning services)
AWS SageMaker
AWS SageMaker (Amazon SageMaker)
BERT
GPT
LLaMA
Mlflow
Whisper
FastAPI
Immutable.js
k-NN
Microsoft Azure SQL Server
AWS CloudWatch
AWS S3
Azure Blob Storage
Azure Monitor
Azure VM
Google Docs
Prometheus
Kafka
Illustration and icons
Palm OS
Qdrant
RDS
tf-serving
Weaviate
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Software Engineer with over 5 years of AI implementation experience, possessing deep expertise in machine learning and natural language processing. Proven track record in developing AI strategies, implementing automated document workflows, and training teams in AI tool adoption. Proficient in a range of technologies including AWS, Azure, Docker, Kubernetes, and various machine learning libraries (TensorFlow, PyTorch, Scikit-learn). Strong background in DevOps with experience setting up CI/CD pipelines and database administration, paired with the ability to produce precise technical documentation. Notably contributed to improved forecasting and customer service through predictive modeling. Holds a Master's degree in Project Management, reinforcing a solid foundation in both the practical and theoretical aspects of technology and project execution.

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Seniority Senior (5-10 years)
Location Lviv, Ukraine
Erlang
Elixir
PostgreSQL
Redis
GitHub
GitLab
Jira
Redmine
Linux
Windows
OTP
RabbitMQ
...

Software Engineer​ with 6 years of software development experience. Fluent with agile methodologies, software design principles & approaches.​ Experienced with ​capturing and analyzing business requirements, their decomposition & further tasks planning. Result-oriented, open-minded, stress-resistant. My goal is to grow up ​own professional skills in development and make great contribution to company's growth.

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Seniority Senior (5-10 years)
Location Kyiv, Ukraine
Java
Wireshark
Python
Ant Design
HTML
XML
Jasper
Java SE
Java Server Pages (JSP)
JDBC
JPA
Robot Framework
Spring
MySQL
Oracle Database
PL/SQL
PostgreSQL
Azure
AWS MQ
Android
Apache Maven
JMeter
JUnit
Selenide
Selenium IDE
Selenium Webdriver
TestNG
Apache Tomcat
J2EE
Kafka
RabbitMQ
Bash
Eclipse
IntelliJ IDEA
Git
SVN
Gradle
Jenkins
Jira
Redmine
Kanban
microservices architecture
Scrum
UML
Linux
Unix
Windows
iReport
VSS
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- Experience more than 15+ of professional Software Development and Automation Testing - Tech Lead of QA department, enormous experience in mentoring; - Participation in testing of software applications for a range of business domains; - Experience in testing of different projects for different OS and Application Servers; - Experience with Java, Python automated testing; - Experience with Relational databases and ORM technology; - Experience in writing testing documents (test plans, test cases, etc.); - Experience in common testing techniques including black box, functional, smoke, load, performance, regression, GUI, usability, scenario, etc.; - Good communication skills, ability to learn new software and processes quickly and efficiently. - Upper-Intermediate English. - Availability starting from 08.08.2023

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Seniority Senior (5-10 years)
Location Uzhgorod, Ukraine
Project Management 5yr.
MS SQL Server Management Studio 5yr.
Unreal Engine 4yr.
DigitalOcean 4yr.
Core Graphics
CSP
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- Accomplished Software Engineer with over 4 years of experience in developing robust code for high-volume businesses. - In-depth expertise in project management and a proven track record of applying skills in the efficient completion of several large-scale projects. - Highly skilled in SEO integration, digital marketing, and community management, particularly within the crypto and blockchain domains. - Holds multiple certifications in Moderating and Community Management, Project Management, Digital Marketing, and web3 management. - Technical prowess in project management platforms, community moderation tools such as Discord and Telegram, and leveraging social media analytics to enhance follower retention and engagement. - Recognized for successfully leading the Web3 community management, with achievements including a 20% improvement in follower retention through the introduction of new analytic protocols.

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Seniority Middle (3-5 years)
Location Manchester, United Kingdom
React
Vue.js
Angular
Next.js
Nuxt
JavaScript
Express
GatsbyJS
ASP.NET
Django
Fabric
Laravel
NgRx
Redux
Vuex
Firebase
AWS
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Organized, collaborative and highly skilled full stack & blockchain developer with 8+ years of professional experience in dynamic and deadline-driven work environments. Self-motivated and self-taught professional who always trends to challenge difficult problems no one dares to try. The following skills can cover your project? - Blockchain (Solidity, Web3.js, Ethers.js) - JS frontend frameworks (React, Vue, Angular, Next, Nuxt, Gatsby) - Backend skills (Laravel, Express, Django, .NET) - Other (GraphQL, Shopify, AWS, Firebase, Google APIs, Typescript) If so, your project is already 99.99% done. The only thing left is to hire me and wait for the perfect result drinking coffee ~_~

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Seniority Senior (5-10 years)
Location Toronto, Canada
$30/hr
$5000/month
React
Vue.js
Angular
Next.js
Nuxt
JavaScript
Express
GatsbyJS
ASP.NET
Django
Fabric
Laravel
NgRx
Redux
Vuex
Firebase
AWS
...

Organized, collaborative and highly skilled full stack & blockchain developer with 8+ years of professional experience in dynamic and deadline-driven work environments. Self-motivated and self-taught professional who always trends to challenge difficult problems no one dares to try. The following skills can cover your project? - Blockchain (Solidity, Web3.js, Ethers.js) - JS frontend frameworks (React, Vue, Angular, Next, Nuxt, Gatsby) - Backend skills (Laravel, Express, Django, .NET) - Other (GraphQL, Shopify, AWS, Firebase, Google APIs, Typescript) If so, your project is already 99.99% done. The only thing left is to hire me and wait for the perfect result drinking coffee ~_~

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Seniority Senior (5-10 years)
Location Toronto, Canada
React 4yr.
Redux 4yr.
RESTful API 4yr.
TypeScript 4yr.
Vue.js 2yr.
JavaScript 4yr.
Bootstrap 4yr.
Firebase 4yr.
Axios 4yr.
Docker 4yr.
Git 4yr.
Postman 4yr.
Ant Design 3yr.
Material UI 3yr.
Styled components 3yr.
Formik 3yr.
i18next 3yr.
React-hook-form 3yr.
Tailwind CSS 2yr.
Mobx 2yr.
Redux-Saga 2yr.
Redux Thunk 2yr.
Redux-toolkit 2yr.
Zustand 2yr.
NestJS 2yr.
Node.js 2yr.
MongoDB 2yr.
Jest 2yr.
React-testing-library 2yr.
React Native 1yr.
Next.js 1yr.
AWS 1yr.
Azure DevOps 1yr.
...

- Versatile Frontend Developer with 4 years of experience in React, React Native, and Vue.js. - Strong track record of working on various projects and delivering high-quality web and mobile applications. - Proficient in JavaScript/TypeScript, React, Redux, Redux Toolkit, Axios, and Vue. - Experienced in mentoring and teaching, with extensive teaching experience. - Skilled in Agile methodologies, Git, REST APIs, and MongoDB. - Familiar with Docker, AWS, Firebase, and Azure Devops. - Proficient in frontend development frameworks and libraries such as Material-UI, Antd, Tailwind, and Bootstrap.

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Seniority Middle (3-5 years)
Location Warsaw, Poland
Spryker
PHP
Go
Symfony
AWS ElasticSearch
MongoDB
Redis
GCP
Agile
DDD
TDD
Docker
Kubernetes
Jira
Akeneo
Aumio
Git Scrum
Make.com
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Seniority Senior (5-10 years)
Location Bosnia and Herzegovina
HTML
Tailwind CSS
JavaScript
...
Seniority Middle (3-5 years)
Location Lagos, Nigeria
Python 10yr.
C 10yr.
Linux Networking 7yr.
eBPF
Go
Linux 5yr.
AWS 3yr.
Azure 3yr.
Hack
Java
PHP
Rust
Puppeteer
AWS ElasticSearch
PostgreSQL
SQL
ADFS
Azure Key Vault
Android
Ansible
Bamboo
Jenkins
OpenVPN
Puppet
Apache HTTP Server
Apache Tomcat
LAMP
Nginx
Windows Server
Atlassian Confluence
Jira
Bash
Perl
PowerShell
BitBucket
Git
GitLab
Cacti
Grafana
Nagios
Prometheus
Centos
Linux Kernel
macOS
SLES
Ubuntu
Consul
HAProxy
Samba
StrongSwan
VPN
Docker
Kubernetes
KVM (for Kernel-based Virtual Machine)
LibVirt
Nomad
Packer
Terraform
Vagrant
VmWare
XEN
Gentoo
Office 365
AD
Cobbler
Domoticz
Icinga2
LEDE
Observium
OpenWiFi
OpenWrt
RHEL
SUSE
vallumd
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- Experienced software engineer with 20+ years in Linux-based systems and infrastructure automation; - Skilled in developing networking tools and microservices in C, Go, Rust, and Python; - Hands-on experience with embedded platforms such as OpenWrt and LEDE; - Worked with distributed networking tools including vallumd for IPset distribution; - Experienced in firewall setup, routing, and network performance tuning; - Built CI/CD pipelines and automated deployments using Terraform, Ansible, GitLab, and Docker; - Familiar with Kubernetes and infrastructure-as-code practices in hybrid environments; - Used Bash and Python to automate system processes and infrastructure tasks; - Worked on wireless and telecom-related projects, including Express Wi-Fi and Android-based OTA tools; - Maintained and customized Linux distributions across ARM, MIPS, and x86 architectures for embedded and cloud systems.

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Seniority Architect/Team-lead
Location Bulgaria
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