Oleksandr Vasyliev

The work was completed at a high level, with attention to detail and full compliance with complex technical requirements. The developer showed initiative in solving non-standard situations, responded promptly to comments, handled confidential information appropriately, and adhered to agreed deadlines. The technical specifications were met, and the results fully meet expectations. We hope for the continuation of our cooperation in future projects. We highly recommend.

Everything is great, thank you, let's move on!!!

Working with Oleksandr was a very positive experience. The project was technically challenging (authentication, Supabase, RLS, workspace, production deployment, and security requirements), but all tasks were completed correctly and on time according to the specification.

Oleksandr demonstrated strong technical skills, a solid architectural approach, and the ability to independently identify and fix issues, including on production. Communication was clear and efficient.

The result was fully tested and accepted, with all core flows working reliably.
I highly recommend Oleksandr as a dependable and skilled developer. Rating: 10/10.

Everything is great, thank you, let's move on!!!

Responsible in work, with clear execution of the project brief and active involvement. Was able to effectively grasp the idea, was accommodating when it came to revisions and improvements! I recommend.

This full-stack engineer delivered outstanding work throughout the project. He demonstrated deep expertise in Next.js 15, React 19, Prisma, and Stripe integration, implementing a seamless and scalable architecture with clear, maintainable code. Communication was proactive and professional, with regular updates and quick responses to feedback. The Stripe setup was done flawlessly, ensuring both security and performance. Overall, a reliable, skilled, and highly capable developer who takes ownership of the work and delivers top-quality results. Would definitely work with him again.

Alexander delivered a clean, production-ready implementation across the full stack. They set up a modern Next.js 15 app with React 19, implemented robust Prisma schemas and migrations, and wrote clear API routes with proper input validation. Code quality was high, with thoughtful component structure, type safety, and reusable utilities. Communication was proactive, timelines were met, and they documented setup, env variables, and deployment steps. Testing coverage was sensible for critical paths, and they handled edge cases and performance considerations. Overall, a reliable engineer who ships.

Working with this full-stack engineer was an excellent experience. The project involved Next.js 15, React 19, Prisma, and Stripe integration, and everything was handled with great attention to detail and clean code structure. Communication was fast and clear, deadlines were met without issue, and the final result exceeded expectations. The developer demonstrated strong technical expertise, especially in backend logic and payment workflow implementation. Highly recommended for any complex full-stack Next.js or Stripe-related project.

Everything is great, thank you, let's move on!!!

The work was done very well and quickly. It is pleasant to work with Oleksandr.

Quickly and efficiently! I recommend for collaboration.

Everything is great, promptly, the performer is always in touch.

Excellent performer, will cooperate again

The freelancer did an excellent job diagnosing and fixing video playback issues on iOS. Problems with playback interruption, sound disappearance, and UI loading delays after swipes were resolved. The solution did not affect other platforms (Android, web), as required. Was always available, offered clear and professional solutions. Work was completed on time and at a high quality level. I recommend for collaboration!

The freelancer handled the revisions and optimization of the existing React project excellently. Quickly added the necessary check for iOS, completely redesigned the HLS handling through native modules, which significantly improved video stability and performance. The code is well-organized and clean. Always available, explained proposed solutions in detail. Very satisfied with the work — I recommend for any React tasks.

The freelancer did an excellent job diagnosing and fixing video playback errors on iOS. Problems with playback interruption, sound disappearance, and UI loading delays after swipes were resolved. The solution did not affect other platforms (Android, web), as required. Was always available, offered clear and professional solutions. Work was completed on time and at a high quality level. I recommend for collaboration!

Oleksandr performs the work very qualitatively, easily and quickly integrates team processes. I definitely recommend collaborating with him.