Custom Software Development & Consulting Company

Upstaff is a strategic alliance between industry-leading teams and consultants in FinTech, Retail, Banking, Blockchain, .IoT, and other domains. With a team of over 50 in-house FTEs and 2,000+ remote vetted engineers, and 10+ years of outstanding service, we are backed by prominent European investors.

Our extensive portfolio includes collaborations with over 50 global service companies, unicorns, and dozens of startups. Contact us today to discuss how we can help you unlock the potential of blockchain technology to boost your project.

Trusted by Businesses
Accenture - Client
SpiralScout - Client
Valtech - Client
Unisoft - Client
Diceus - Client
Ciklum - Client
Infopulse - Client
Adidas - Client
Accenture - Client
SpiralScout - Client
Valtech - Client
Unisoft - Client
Diceus - Client
Ciklum - Client
Infopulse - Client
Adidas - Client

Hire the Upstaff team
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Contact Us

Meet Upstaff Team

JavaScript 8yr.
React 8yr.
TypeScript 5yr.
Node.js 5yr.
Next.js 3yr.
...

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
Python 5yr.
Django 3yr.
Mobile development
Flask
API
...

- 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
Location Ternopil, Ukraine
Haskell 3yr.
Scala 2yr.
Plutus 2yr.
Akka
Cardano
...

- 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
Location Ukraine
Node.js 5yr.
React 3yr.
Solidity
NFT
...

• 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
Location Ukraine
Python
Django
Flask
...

- 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
Location United States
PHP 9yr.
JavaScript 9yr.
MySQL 9yr.
Solidity
...

- 10+ years experience as a Full-Stack Developer with of developing robust web applications and services, including extensive experience in both frontend and backend technologies; - Technical proficiency with PHP and MySQL for server-side development, advanced JavaScript utilization on the client side; - Strong abilities with blockchain technology engagement, including smart contracts and wallet development using Solidity, Hardhat, Truffle, WalletConnect, and Metamask SDK; - Experienced with libraries Web3.js, and Ethers.js; - Ability to work Ethereum Blockchain, Binance Smart Chain (BSC), with different wallets including MetaMask; - Adept at working with a variety of frameworks and languages beyond core competencies, such as Laravel, Solidity, Node.js, and C++; - Up-to-date with modern practices, possessing comprehensive experience in codebase upgrades, performance optimization, and integrating third-party APIs; - Successfully led a development team, demonstrating strong leadership and project estimation skills.

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Seniority Senior
Location 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
MS Dynamics 365
Power Apps
Microsoft Power Platform
Canvas Apps
...

- 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
Location Lithuania
Bash 10yr.
Shell Scripts 10yr.
MySQL 10yr.
Ansible
Ansible Playbook
...

- Over 20 years in IT with a master's degree in Cybernetics - Proficient in Ansible: Extensive experience in deploying and managing Ansible-driven infrastructure, particularly highlighted in roles as SRE/Architect (Aug 2018 – Present) and Senior DevOps Engineer/Lead Sysadmin (Aug 2020 – May 2021), where Ansible was pivotal in scaling a learning platform from 1,000 to over 100,000 students and in key migration projects. - Expertise in Windows Environments: Demonstrated strong skills in managing Windows environments, especially as an SRE/Architect (Aug 2018 – Present) and CTO (2013 – Mar 2022), involving Windows AD+MSSQL backoffice management and ITIL Service Management framework implementation on Windows platforms. - Versatile IT Roles with Ansible and Windows: Across various roles including IT Service Manager, Senior DevOps Engineer, and CTO, consistently applied Ansible and Windows technologies in large-scale infrastructure projects and day-to-day operations, showing versatility and depth in these areas. - Managing the growth of the learning platform from 1,000+ to 100k+ active students - ITIL v3 Foundations Certificate - More than 5 years of experience in leading ITIL Service Management capability and implementing end-to-end ITIL Service Management framework - Strong experience in using ServiceNow and Jira Service Desk for ITSM - Experienced IT/Telecom Specialist - UNIX and UNIX-Like OS (FreeBSD, Linux, SunOS, MacOS X) background - Over 20 years of Windows/windows server family. From NT4.0 /win3.1 up to Server2019. As well as upgrading Up to 15 years with server HW, and 13 years with storage solutions - Infrastructure problem-solver with a strong view on reliability, performance, and disaster recovery - Fluent English

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Seniority Senior
Location Ukraine

Our most common engagement models

chart laptop scaled aspect ratio

Project-based Model

Get a custom platform design along with any other services you might need (expert consultations, product design, web engineering, digital platforms, mobile application development, Operations and Clouds, Data and Analytics, Desktop, Embedded systems, Blockchain, No-code/Low-code, Website optimization, SEO and much more) at a fixed price.
team job photo

Dedicated Development Team

Get a dedicated team of software developers working on your project according to our flexible time and materials payment scheme.
woman with data dashboard

Consulting

We help our clients to identify the potential of a software development for their organization including market research, project’s feasibility assessment, analysis of blockchain platforms, tools, right features prioritization.

Case Studies

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

Europe’s Data Vision: Dataspaces for Zero-Trust AI Infrastructure

Upstaff builds AI-Driven Data Platform for Environmental Organizations
Case Studies

Upstaff builds AI-Driven Data Platform for Environmental Organizations

Bringing 2M+ Wallet Ecosystem to the Next Level Decentralized Operating System.
Case Studies

Bringing 2M+ Wallet Ecosystem to the Next Level Decentralized Operating System.

Blog

AI Jobs: What’s Hot in 2025?
Business

AI Jobs: What’s Hot in 2025?

Discover the most in-demand AI jobs, technologies, and rates from the first half of 2025 on Upwork and Upstaff.
Bohdan Kashka
Bohdan Kashka
2025 Hiring Code: How Upstaff Wins the Talent Game
Business

2025 Hiring Code: How Upstaff Wins the Talent Game

2025 hiring feels like you’re pulling off a heist in a sci-fi flick: AI’s churning out glossy resumes that don’t match reality, candidates are juggling virtual assistants like sidekicks, and the market’s flooded with folks who can barely spell “React,” let alone code it.
Bohdan Kashka
Bohdan Kashka
YouTeam Acquired by Toptal: A Ukrainian Success Meets Global Power
Business

YouTeam Acquired by Toptal: A Ukrainian Success Meets Global Power

YouTeam, the Ukrainian-founded talent platform at YouTeam.io, has been snapped up by Toptal, a U.S.-based freelance giant at Toptal.com. Co-founder Yurij Riphyak announced the deal on LinkedIn, merging YouTeam’s 50,000+ vetted engineers into Toptal’s elite network. While it’s a win for innovation, it also shows how stronger capital can bury great new initiatives to dominate the freelance market. Read more about this shift in the tech talent wars.
Bohdan Kashka
Bohdan Kashka
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Frequently Asked Questions

What is Upstaff? Arrow

Upstaff is a service company with its own in-house engineering, and management competence, leveraging the community of software development companies’ resource network.

When can my team start work? Arrow

Our developers can start immediately or within two weeks after the project is confirmed.