Hire Developers with different Programming Languages

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Upstaff connects top-tier engineers proficient in a variety of programming languages, ensuring your projects are powered by the right expertise, from Python and Java to JavaScript and beyond. Hire dedicated developers with the skills your business needs, seamlessly.
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Python 9yr.
SQL 6yr.
Microsoft Power BI 5yr.
Reltio
Databricks
Tableau 5yr.
NoSQL 5yr.
REST 5yr.
GCP (Google Cloud Platform) 4yr.
Data Testing 3yr.
AWS 3yr.
Data Testing 3yr.
R 2yr.
Shiny 2yr.
Spotfire 1yr.
JavaScript
Machine Learning
PyTorch
Spacy
TensorFlow
Dask
Django Channels
Pandas
PySpark
Python Pickle
PyTorch
Scrapy
TensorFlow
Apache Airflow
Apache Spark
Data Mining
Data Modelling
Data Scraping
ETL
Reltio Data Loader
Reltio Integration Hub (RIH)
Sisense
Apache Spark
Aurora
AWS DynamoDB
AWS ElasticSearch
Microsoft SQL Server
MySQL
PostgreSQL
RDBMS
SQLAlchemy
AWS Bedrock
AWS CloudWatch
AWS DynamoDB
AWS ElasticSearch
AWS Fargate
AWS Lambda
AWS S3
AWS SQS
API
GraphQL
RESTful API
Selenium
Unit Testing
Git
Linux
Pipeline
RPA (Robotic Process Automation)
RStudio
BIGData
Cronjob
MDM
Mendix
Parallelization
Reltio APIs
Reltio match rules
Reltio survivorship rules
Reltio workflows
Vaex
...

- 8 years experience with various data disciplines: Data Engineer, Data Quality Engineer, Data Analyst, Data Management, ETL Engineer - Extensive hands-on expertise with Reltio MDM, including configuration, workflows, match rules, survivorship rules, troubleshooting, and integration using APIs and connectors (Databricks, Reltio Integration Hub), Data Modeling, Data Integration, Data Analyses, Data Validation, and Data Cleansing) - Data QA, SQL, Pipelines, ETL, Automated web scraping. - Data Analytics/Engineering with Cloud Service Providers (AWS, GCP) - Extensive experience with Spark and Hadoop, Databricks - 6 years of experience working with MySQL, SQL, and PostgreSQL; - 5 years of experience with Amazon Web Services (AWS), Google Cloud Platform (GCP) including Data Analytics/Engineering services, Kubernetes (K8s) - 5 years of experience with PowerBI - 4 years of experience with Tableau and other visualization tools like Spotfire and Sisense; - 3+ years of experience with AI/ML projects, background with TensorFlow, Scikit-learn and PyTorch; - Upper-intermediate to advanced English, - Henry is comfortable and has proven track record working with North American timezones (4hour+ overlap)

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Seniority Senior (5-10 years)
Location Nigeria
JavaScript 5yr.
Web3.js
React
WebRTC
Ant Design 5yr.
Java
TypeScript
Ajax
Bootstrap
Bootstrap 4
CSS
HTML
Material UI
SCSS
Socket.io
Storybook
Styled components
Tailwind CSS
Ethers.js
Express
GatsbyJS
i18next
Mobx
NestJS
Next.js
Node.js
React Hooks
React Query
Redux
Redux Thunk
Redux-toolkit
Styled components
MongoDB
PostgreSQL
Blockchain
Agile
Clean Architecture
Kanban
Scrum
Cypress
Jasmine
Jest
Mocha
React-testing-library
Unit Testing
dApps
Ethers.js
Hardhat
Solana
Docker
Problem Solving
WebSockets
Chakra UI
CSS3
Ext JS
Openai
React-hook-form
seo
WAGMI
Zustand
...

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

- 10+ years of experience in web development, M.Sc in Software Engineering - 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
Python
Django
Flask
C#
JavaScript
APScheduler
AsyncIO
Beautiful Soup
Django Channels
Django ORM
Dramatiq
Pandas
PyTest
TensorFlow
CSS
HTML
Vue.js
Vue Router
Vuex
Data Analysis
Data Mining
Elastic Search Platform
AWS ElasticSearch
Django ORM
MongoDB
PostgreSQL
Redis
SQLAlchemy
TensorFlow
AWS ElasticSearch
AWS MWS (Amazon Marketplace Web Service)
AWS S3
SP-API (Amazon Selling Partner API)
AWS MWS (Amazon Marketplace Web Service)
FastApi
Google API
SP-API (Amazon Selling Partner API)
Telegram API
Bash
Celery
RabbitMQ
CI/CD
Cypress
PyTest
Unit Testing
Docker
Jinja
microservices architecture
Nginx
Django REST framework
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 Budapest, Hungary
Objective-C 10yr.
iOS 10yr.
C++ 10yr.
Swift 5yr.
Cocoa 10yr.
SQL 10yr.
Architecture and Design Patterns 10yr.
macOS 10yr.
XCode 10yr.
AppKit 5yr.
UIKit 5yr.
Foundation 5yr.
XML 5yr.
JSON 5yr.
SQLite 5yr.
REST 5yr.
RPC (Remote Procedure Call) 5yr.
C#
Delphi
Java
JavaScript
Python
VBA
AFNetworking
BLE
CocoaPods
Cocoa Touch
Core Animation
Core Bluetooth
Core Data
Core Graphics
Core Location
Core Media
Core Text
Crashlytics
Flurry
KVC
KVO
NWProtocolWebSocket
Packet Tunnel Provider
StoreKit
SwiftGen
SwiftLint
Viper
Chromium
HTML
WebKit
VBA
Google Analytics
Firebase
Microsoft SQL Server
MySQL
Oracle Database
PostgreSQL
SQLCipher
AWS S3
Google Cloud Pub/Sub
Agile
Design patterns
DFF (Feature Driven Development)
MVC (Model-view-controller pattern)
MVVM
Scrum
SDLC
UML
Waterfall
Apache HTTP Server
Catch2
e2e testing
cURL
OpenSSL
TLS
XMPP
Firebase
FreeBSD
MS-DOS
Ubuntu
Unix
Windows
Git
Jenkins
Microsoft Visual Studio
Qt Creator
Qt Framework
valgrind
MVP
RESTful API
Windows API
3D Modelling
AE
AES
AppCenter CI
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
AWS big data services 5yr.
Microsoft Azure 3yr.
Python
Kafka
ETL
C#
C++
Scala
Big Data Fundamentals via PySpark
Deep Learning in Python
Keras
Linear Classifiers in Python
Pandas
PySpark
TensorFlow
Theano
.NET
.NET Core
.NET Framework
Apache Airflow
Apache Hive
Apache Oozie 4
Apache Spark
Apache Spark 2
Data Analysis
Apache Hadoop
Apache Hive
Apache Spark
Apache Spark 2
AWS Database
dbt
HDP
Microsoft SQL Server
pgSQL
PostgreSQL
Snowflake
SQL
AWS ML (Amazon Machine learning services)
Keras
Machine Learning
OpenCV
TensorFlow
Theano
AWS
GCP (Google Cloud Platform)
AWS Database
AWS ML (Amazon Machine learning services)
AWS Quicksight
AWS Storage
GCP AI
GCP Big Data services
Apache Kafka 2
Apache Oozie 4
Kubernetes
OpenZeppelin
Qt Framework
YARN 3
SPLL
Superset
...

- Data Engineer with a Ph.D. degree in Measurement methods, Master of industrial automation - 16+ years experience with data-driven projects - Strong background in statistics, machine learning, AI, and predictive modeling of big data sets. - AWS Certified Data Analytics. AWS Certified Cloud Practitioner. Microsoft Azure services. - Experience in ETL operations and data curation - PostgreSQL, SQL, Microsoft SQL, MySQL, Snowflake - Big Data Fundamentals via PySpark, Google Cloud, AWS. - Python, Scala, C#, C++ - Skills and knowledge to design and build analytics reports, from data preparation to visualization in BI systems.

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Seniority Expert (10+ years)
Location Ukraine
Data Analysis 10yr.
Python
C#
Elixir
JavaScript
R
ASP.NET Core Framework
ASP.NET MVC Pattern
Entity Framework
caret
dplyr
rEDM
Shiny
tidyr
dash.js
Flask
Matplotlib
NLTK
NumPy
Pandas
Plotly
SciPy
TensorFlow
Basic Statistical Models
Chaos Theory
Cluster Analysis
Decision Tree
Factor Analysis
Jupyter Notebook
Linear and Nonlinear Optimization
Logistic regression
Multi-Models Forecasting Systems
Nearest Neighbors
Nonlinear Dynamics Modelling
Own Development Forecasting Algorithms
Principal Component Analysis
Random Forest
Ridge Regression
Microsoft SQL Server
PostgreSQL
NumPy
TensorFlow
AWS
GCP (Google Cloud Platform)
Anaconda
Atom
Microsoft Visual Studio
R Studio
Git
RESTful API
Windows
...

- 10+ years in Forecasting, Analytics & Math Modelling - 8 years in Business Analytics and Economic Processes Modelling - 5 years in Data Science - 5 years in Financial Forecasting Systems - Master of Statistics and Probability Theory (diploma with honours), PhD (ABD) - BSc in Finance - Strong knowledge of Math & Statistics - Strong knowledge of R, Python, VBA - Strong knowledge of PostgreSQL and MS SQL Server - 3 years in Web Development: Knowledge of C#, .Net and JavaScript for web development - Self-motivated, conscientious, accountable, addicted to data processing, analysis & forecasting

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Seniority Senior (5-10 years)
Location Ukraine
Node.js 5yr.
React 3yr.
Solidity
NFT
Python 10yr.
C++
JavaScript
R
TypeScript
Express
Next.js
HTML
XML
Azure Cosmos DB
BigChainDB
CouchDB
MongoDB
MySQL
PostgreSQL
SQL
Azure Cosmos DB
Asterisk
Avalanche
BEP-20
BigChainDB
BSC
DeFi
ERC-1155
ERC-20
ERC-721
ETH (Ethereum blockchain)
ICO
IPFS (InterPlanetary File System)
TronChain
Wallets (Integration & Transaction Signing)
Bash
Perl
Docker
GitLab CI
Kubernetes
Odoo
Stripe
Payload Verification
Strap
...

• 15+ years of commercial software development experience • Solid knowledge of Solidity, C++, JavaScript, TypeScript; • Deep understanding of blockchain architecture and smart contract logic; • Cosmos, Tron, Avalanche, Binance Smart Chain, Ethereum dApps; • Strong skills in developing NFT smart contracts. Support and payload verification; • NFT Marketplaces (ERC - 721/1155), Crypto Payment Solutions & DeFi Cross Chain Bridges - ERC-20 Tokens, ICO, DEX, Staking, Swapping; • Highly qualified knowledge of Stripe payment system integration to blockchain data; • 10+ years experience working with Python; • 5 years experience working with Node.js; • Strong abilities with Express; • Experience working with Docker, and Kubernetes (K8s); • 3+ years of development experience with React.js. • No scheduled vacations within the next 3 months;

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Seniority Senior (5-10 years)
Location Ukraine
Python 5yr.
QA Automation 3yr.
Telegram API
Telegram Mini Apps
FastAPl 5yr.
RPA (Robotic Process Automation) 2yr.
Parse 2yr.
MySQL
SQL Alchemy
Cryptocurrencies
Crypto Services
TON
TonKeeper
Web3
DFF (Feature Driven Development)
FastApi
pyTelegramBotAPI
Project Management
Mini-Apps
Mobile development
Multiprocessing
...

- Strong background in computer engineering and automation; - 5+ years of experience with Python; - Good knowledge of the blockchain industry and web3 project development; - Proven expertise in developing mobile applications, crafting solutions for crypto services, and creating telegram mini-apps; - Skilled in web automation, bot development, parsing, and working with web3 technologies.

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

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Manager
Maria Lapko
Global Partnership Manager
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Types of Programming Languages:

  1. Low-Level Languages:
    • Machine Language: Directly executed by the computer’s CPU; written in binary (0s and 1s).
    • Assembly Language: Uses symbolic representations of machine instructions, requiring an assembler to convert to machine code.
  2. High-Level Languages:
    • Easier for humans to read and write; translated to machine code by compilers or interpreters.
    • Examples: Python, Java, C++, JavaScript, Ruby.
  3. Scripting Languages:
    • Designed for automating tasks within other software.
    • Examples: Python, JavaScript, Perl.
  4. Markup and Query Languages:
    • Focused on structuring and managing data rather than performing computations.
    • Examples: HTML, XML, SQL.
  5. Domain-Specific Languages (DSLs):
    • Tailored for specific applications or domains.
    • Examples: MATLAB (for mathematical computations), R (for data analysis).
  6. Object-Oriented Languages:
    • Focus on objects (data structures containing data and methods).
    • Examples: Java, C++, Python.
  7. Functional Languages:
    • Emphasize mathematical functions and immutability.
    • Examples: Haskell, Scala.
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Talk to Our Expert

Our journey starts with a 30-min discovery call to explore your project challenges, technical needs and team diversity.
Manager
Maria Lapko
Global Partnership Manager

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