Hire Developers with Popular 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.
Databricks
PySpark
...

• 9 years experience with various data disciplines: Data Engineer, Data Quality Engineer, Data Analyst, Data Management, ETL Engineer • Built and optimized production-grade PySpark pipelines handling millions of records, including complex transformations, joins, aggregations, and backfills, with a strong focus on performance and data quality. • Automated Web scraping (Beautiful Soup and Scrapy, CAPTCHAs and User agent management) • Data QA, SQL, Pipelines, ETL • Data Analytics/Engineering with Cloud Service Providers (AWS, GCP) • Extensive experience with Spark and Hadoop, Databricks (hands-on with Spark-based pipelines deployed in cloud environments and have used Databricks as the execution and collaboration layer: jobs, notebooks, cluster configs). • 7 years of experience working with MySQL, SQL, and PostgreSQL; • 5 years of experience with Amazon Web Services (AWS) • Google Cloud Platform (GCP): BigQuery, GCS, App Engine, data pipelines, and Azure (basic knowledge) • 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; • 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) • Upper-intermediate to advanced English

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Seniority Senior
Location Nigeria
TypeScript 7yr.
Node.js 6yr.
JavaScript
React
Angular
...

- 10 years of software development experience - 7 years of commercial experience with TypeScript and 6 years of commercial experience with Node.js - Upper-Intermediate English - Available ASAP

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Seniority Senior
Location Uzhgorod, Ukraine
Azure
PowerShell
...

• IT Systems Engineer with over 15 years of experience in NetOps, SysOps, and IT infrastructure management, specializing in hybrid cloud environments, cybersecurity, and automation. • Administers Azure, VMware, and Microsoft ecosystems, including Intune for device management, Veeam for backups, and PowerShell scripting for operational efficiency. • Certifications in AZ-900, Sophos, and Veeam.

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Seniority Senior
Location Torrevieja, Spain
JavaScript 6yr.
TypeScript 6yr.
Node.js 6yr.
React 5yr.
Vue.js
...

• Strong front-end expertise across JavaScript/TypeScript, React, Vue, Next.js,Nuxt, understanding of UI/UX principles, responsive design, microservice and component architectures. • Skilled in developing scalable SPA/PWA solutions, integrating complex front-end logic, and collaborating with backend services using Node.js, REST, SSR, Postgresql and CI/CD pipelines. • Clean, maintainable code and transforming product requirements into user experiences. • Contributed to enterprise-level platforms with advanced dashboards, real-time features, route-mapping components, performance optimizations, and long-term codebase improvements. • Creative, detail-oriented full-stack engineer with 6+ years of experience building modern web applications.

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Seniority Senior
Location Kyiv, Ukraine
Dynamics 365 CE
Power Apps
.NET
C#
Canvas Apps
...

- Experienced Full-Stack Software Engineer with over 12 years in enterprise application development, including 5+ years of hands-on expertise in Power Platform, Canvas Apps, Model-Driven Apps, Power Automate, and Azure Functions. - Specialized in designing, building, and stabilizing complex PowerApps solutions for large-scale enterprise clients across industries such as manufacturing, HR, logistics, and advisory services. - Proficient in Canvas App architecture, custom pages, PCF controls, Dataverse, and low-code/no-code automation. Strong background in Azure integrations, C#/.NET backend development, and React-based UI components. - Skilled in refactoring legacy PowerApps solutions, optimizing performance, and implementing robust approval workflows with Microsoft Teams and DocuSign integrations. - Trusted by Microsoft Inner Circle Partners for delivering high-quality, scalable, and maintainable solutions under tight deadlines. - Master's degree in Applied Mathematics and Computer Science. - Experience in developing CRM systems, banking solutions, web-based platforms, enterprise resource planning systems, and fatigue management systems. - Data analytics, data engineering, data extraction/ETL, artificial intelligence & machine learning, data mining and management, data science, and data visualization. - Familiarity with Adobe Commerce & Experience, Drupal, Microsoft (AX, Dynamics 365, SharePoint), MuleSoft, Oracle NetSuite, Salesforce, and SAP.

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Seniority Expert
Location Lviv, Ukraine
Java SE
Java EE
JavaFX
PHP
JavaScript
...

• 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
Location Ukraine
JavaScript 7yr.
React 5yr.
Vue.js 2yr.
Nuxt
Node.js
...

• 7+ years with JavaScript and TypeScript • Vue.js (Nuxt, Vuex, Vue Router) • React (Redux, styled-components, MobX-state-tree, Next) • Strong skills with HTML, CSS, SCSS, SASS; • Server-Side: PHP (Laravel, WordPress), MySQL, MongoDB, NodeJS (CRUD, auth, base manipulations), NestJS. NextJS, Nuxt • Upper-Intermediate (B2/C1) English.

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Seniority Senior
Location Chernihiv, Ukraine
.NET
Azure
C++
React
...

- Full-stack engineer with 7 years of .NET, MS Azure, and JavaScript. - Proven achievements include initiating and building a microservice architecture from scratch for data science computations and reducing latency by optimizing CPU-bound calculations.

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Seniority Senior
Location Tallinn, Estonia

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We closely collaborate with recruitment & talent acquisition teams on urgent or hard-to-fill positions. Discover how startups and top-tier companies benefit.
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Europe’s Data Vision: Dataspaces for Zero-Trust AI Infrastructure

Upstaff builds AI-Driven Data Platform for Environmental Organizations
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Bringing 2M+ Wallet Ecosystem to the Next Level Decentralized Operating System.
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Table of Contents

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

Photo: Yaroslav Kuntsevych(Upstaff CEO)
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co-CEO

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