All Top Engineers You Need to Build AI, Web3, and Data Products.
Get access to a network of Most Trusted Developers, have matching assistance and Free supervision from the discovery phase to product launch, and ongoing support.
.NET Core
C#
PostgreSQL
- Engineer with 6+ years in C#, .NET Core, and backend system design.
- Skilled in cloud platforms AWS, and Azure.
- CI/CD pipelines and DevOps for efficient project delivery. Expertise in optimizing PostgreSQL and MS SQL queries.
- Front-end frameworks: React and Angular (4-16).
- Worked in HealthCare, IoT, and Fintech areas, as well as enterprise and Startups.
C# 7yr.
Xamarin 7yr.
.NET MAUI 5yr.
Kotlin 1yr.
Swift 1yr.
- 11+ years in native iOS (Swift), Android (Kotlin), and cross-platform (.NET MAUI, Xamarin) mobile development.
- Expert in platform migration (Xamarin to .NET MAUI, PCL to .NET Standard) and performance optimization.
- Proficient in MVVM architecture, RESTful APIs, custom controls, and AI-assisted development tools.
- Collaborated with international teams, notably German engineering teams at Miele and IBM Romania
- Engineering diploma in Electrical Engineering, skilled in C#, C++, .NET technologies, and DevOps tools like Git and Azure DevOps.
ASP.NET 10yr.
Xamarin 6yr.
.NET MAUI 6yr.
React Native 6yr.
.NET Core 6yr.
- Technical Team Lead with 16+ years in .NET, MAUI, Xamarin, React, and VueJs, leading mobile and web projects.
- 20 mobile apps in production.
- .NET MAUI since 2022 (NET 6). Published a book about .NET MAUI.
- Expertise in CI/CD, ASP.NET Web API, MVVM, N-tier architecture, and cross-platform mobile development.
- Strong background in software engineering principles and best practices, driving high-quality code and team productivity.
- Fluent in Romanian, English, and Italian, with experience in international project collaboration.
Talk to Our Expert
Our journey starts with a 30-min discovery call to explore your project challenges, technical needs and team diversity.
Yaroslav Kuntsevych
co-CEO
Hire a Developer or Team Tailored to Your Needs
Looking to hire a developer with specific skills? Our platform makes it easy to find developers for any role. From hiring Java and Python developers for backend solutions to hiring Vue.js and React developers for stunning front-end interfaces, Upstaff delivers developers for hire who match your project’s demands. Start today and hire developers in as little as 48 hours.
Welcome to Upstaff
The ‘local only’ model worked great historically, since 2026 reality is forcing a rethink even for established players. Upstaff.com was launched addressing software service companies, startups and ISVs, increasingly varying and evolving needs for qualified software engineers.
Yaroslav Kuntsevych
co-CEO
Why Upstaff
Upstaff is a technology partner with expertise in AI, Web3, Software, and Data. We help businesses gain competitive edge by optimizing existing systems and utilizing modern technology to fuel business growth.
Real-time project team launch
<24h
Interview First Engineers
Upstaff's network enables clients to access specialists within hours & days, streamlining the hiring process to 24-48 hours, start ASAP.
x10
Faster Talent Acquisition
Upstaff's network & platform enables clients to scale up and down blazing fast. Every hire typically is 10x faster comparing to regular recruitement workflow.
Vetted and Trusted Network
100%
Security And Vetting-First
AI tools and expert human reviewers in the vetting process is combined with track record & historically collected feedbacks from clients and teammates.
~50h
Save Time For Deep Vetting
In average, we save over 50 hours of client team to interview candidates for each job position. We are fueled by a passion for tech expertise, drawn from our deep understanding of the industry.
Flexible Engagement Models
Custom Engagement Models
Flexible staffing solutions, accommodating both short-term projects and longer-term engagements, full-time & part-time
Unique Talent Ecosystem
Candidate Staffing Platform stores data about past and present candidates, enables fast work and scalability, providing clients with valuable insights into their talent pipeline.
Transparent
$0
No Hidden Costs
Price quoted is the total price to you. No hidden or unexpected cost for for candidate placement.
x1
One Consolidated Invoice
No matter how many engineers you employ, there is only one monthly consolidated invoice.
How to hire with Upstaff
Talk to Our Talent Expert
Our journey starts with a 30-min discovery call to explore your project challenges, technical needs and team diversity.
Meet Carefully Matched Talents
Within 1-3 days, we’ll share profiles and connect you with the right talents for your project. Schedule a call to meet engineers in person.
Validate Your Choice
Bring new talent on board with a trial period to confirm you hire the right one. There are no termination fees or hidden costs.
Trusted by Businesses
Upstaff operates as a partner, not just an agency. Express that they aim for long-term cooperation and are dedicated to fulfilling client requirements, whether it’s a short one-month project or a more extended collaboration.
Trusted by People - Testimonials and Reviews
Trustindex verifies that the original source of the review is Google.Very professional, punctual and kind team. I am satisfied 🙏
Trustindex verifies that the original source of the review is Google.Amazing experience with UpStaff! The platform is intuitive, and their team ensures seamless communication and excellent results. Highly recommend them for staffing solutions.
Trustindex verifies that the original source of the review is Google.UpStaff is a reliable service for connecting with top talent. The process is smooth, the team is supportive, and the results exceed expectations. A fantastic experience overall!!!
Trustindex verifies that the original source of the review is Google.Great company! UpStaff provides an excellent platform for finding skilled professionals quickly and efficiently. The website is user-friendly, and the customer support is outstanding. Highly recommend!
Trustindex verifies that the original source of the review is Google.We've been working with Upstaff on several mid-size projects. Happy with their service so far: skilled engineers, competent and responsive management. Upstaff managed to provide expertise in a many tech domains, such as Blockchain/web3, .Net, Java, and data engineering, to name a few. Totally positive experience so far.
Trustindex verifies that the original source of the review is Google.Upstaff are immaculate in developing AI bots. Thanks for helping to scale-up my fashion brand page!!’
Trustindex verifies that the original source of the review is Google.A fantastic company that provided exceptional technical support, enabling me to close a hard deal in a hot market. I appreciate that their developers have strong technical backgrounds, offering the team the benefit of their deep institutional knowledge throughout the process.
Trustindex verifies that the original source of the review is Google.Have been impressed with the level of willingness to process every request with the utmost quality and patience. Our company has been partnering with Upstaff, and have never seen such effective, professional, and positive attitude before. Highly recommend Upstaff'services, for hiring engineers, since their selection level is on another top level.
Trustindex verifies that the original source of the review is Google.We've been with Upstaff for over 2 years, finding great long-term PHP and Android projects for our available developers. The support is constant, and payments are always on time. Upstaff's efficient processes have made our experience satisfying and their reliable assistance has been invaluable.
Trustindex verifies that the original source of the review is Google.I worked with Upstaff engineers for over 2 years, and my experience with them was great. We deployed several individual contributors to clients' implementations and put up two teams of upstaff engineers. Managers' understanding of tech and engineering is head and shoulders above other agencies. They have a solid selection of engineers, each time presented strong candidates. They were able to address our needs and resolve things very fast. Managers and devs were responsive and proactive. Great experience!
Verified by Trustindex
Trustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
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.
AI Automation, RPA & Agentic Systems
LLM-powered copilots & agents, AI-augmented RPA bots, Low-code Workflows, and Autonomous AI Agents
AI Engineering
Classical ML, Deep Learning, MLOps & Deployment NLP & Transformers:- Predictive forecasting & demand modeling
- Recommendation & personalization
- Risk scoring for fraud detection
- Custom ML pipelines for model optimization
Data Analytics and BI
Actionable insights from any data source through BI dashboards and seamless integrations.- Executive & self-service dashboards
- Multi-source integrations & ETL
- BI migrations & modernizations
- Embedded & custom analytics