Mystrika
London-based technology talent platform founded in 2019 that provides vetted software engineers for AI, Web3, and data product development, plus staff augmentation and IT outsourcing.
Upstaff LTD is a London-based technology talent platform founded in 2019 that supplies vetted software engineers for building AI, Web3, and data products. The business evolved from a software consulting and team augmentation practice started in 2015 by experienced software engineering executives. Upstaff is incorporated in London and has offices and delivery facilities in Paris, Valencia, Manheim, Kyiv, Lviv, and Kharkiv, drawing on partnerships with over 3,000 expert individuals and companies across Europe, the Americas, and Asia.
The company employs 50 to 99 people and reports a minimum budget of $1,000 to $10,000 and an average hourly rate of $35. CEO and co-founder Yaroslav Kuntsevych leads the firm. Via upstaff.com, clients receive matching assistance and free supervision from the discovery phase to product launch, plus ongoing support, team composition, and system optimization.
Upstaff lists services in HR outsourcing, blockchain, software development, mobile app development, AI development, big data analytics, CRM consulting, web development, DevOps consulting, and cloud consulting. Expertise areas include generative AI, machine learning, NLP, Ethereum and smart contracts, DeFi and Web3 development, data science and Tableau, React.js, Node.js, Angular, and .Net frameworks, Flutter and React Native, Salesforce and HubSpot CRM, and low-code or no-code platforms such as Bubble, Webflow, and OutSystems.
The agency serves clients in crypto, software and IT services, AI, eCommerce, fintech, real estate, NFT, retail, social networks, and consumer goods. Client types include startups, small businesses, medium businesses, and enterprise or corporate organizations. Named clients include Adidas, Ciklum, Shiba Inu Coin, Accenture, Diceus, Spiral Sout, Valtech, and Infopulse. Press coverage includes a HackerNoon article on European data spaces for zero-trust AI infrastructure.
Upstaff holds a 5.0 Google rating from 14 reviews. Reviewers describe skilled engineers, responsive and technically strong management, on-time delivery, and developers who integrate smoothly into existing teams. Long-term clients report positive experiences across Blockchain/web3, .Net, Java, and data engineering engagements.
Portfolio examples include a VueJS Job Description Analyzer Chrome extension ($20K-$100K), the Talently mobile app for finding software developers (under $5K, one month, 2025), the Hire AI Developr platform ($100K-$250K, 12 months, 2025), and an Upwork Alternative platform ($20K-$100K, 3 months, 2022).
Services
- HR Outsourcing
- Blockchain
- Software Development
- Mobile App Development
- AI Development
- Big Data Analytics
- CRM Consulting
- Web Development
- DevOps Consulting
- Cloud Consulting
Industries Served
Team Size
Pros
- Skilled engineers who integrate easily into client teams, per Google reviews
- Responsive and technically strong management, per Google reviews
- On-time delivery and quick issue resolution, per Google reviews
- Vetted network of over 3,000 experts across Europe, the Americas, and Asia
Client Review Analysis
5.0 rating from 14 Google reviews; clients highlight skilled engineers, responsive management, on-time delivery, and smooth team integration.