From interface architecture to production APIs, I shape the full system so every layer feels considered, resilient, and ready to ship.
Freelance reputation
Selected work
A focused selection of product work, from architecture to final interface.
An AI-powered platform for creating, scheduling, and automatically posting faceless short-form videos to TikTok, Instagram Reels, and YouTube Shorts.
An online eyewear store offering designer sunglasses, prescription glasses, reading glasses, and sports eyewear from premium brands.
A platform for online astrology readings, connecting users with astrologers through live chat and personalized consultations.
A mobile launcher for GTA San Andreas Multiplayer (SA-MP) with game resource downloads, server monitoring, client updates, news, donations, and launcher customization.
A quit-smoking app with progress tracking, real-time support from friends or family, motivation features, and community challenges.
A discovery platform for Telegram Mini Apps, games, Web3 applications, utilities, and play-to-earn experiences.
Dzvinok is a digital memorial platform that uses QR codes to preserve and share loved ones’ memories through photos, videos, stories, geolocation, and AR.
Penteleichuk Digital is a web development agency specializing in custom websites, e-commerce, SaaS solutions, and SEO-focused development.
Expertise
Capabilities are grouped around the work they make possible, not around a wall of logos.
Readable systems that preserve intent across screen sizes, input methods, and real content.
Clear boundaries between product behavior, data, and the interfaces that connect them.
Performance, maintainability, and delivery decisions made as part of the product—not after it.
Engineering quality
The strongest interfaces feel simple because the system beneath them is coherent. Every decision—from data boundaries to focus order—supports the final experience.
const product = {
interface: "responsive",
architecture: "maintainable",
delivery: "production-ready"
};
Boundaries that keep change local and product behavior understandable.
Layouts designed for real content, responsive states, and every input method.
Fast rendering and intentional hydration, built into the implementation plan.
How I work
Architecture and interface decisions happen in the same conversation, keeping execution aligned with the product goal.
Clarify the audience, product behavior, technical constraints, and the decision the interface needs to make easy.
Establish information hierarchy, component boundaries, data flow, and a delivery path before details multiply.
Connect the interface and backend incrementally, validating responsive behavior and accessibility as the product grows.
Test the complete experience, remove friction, and tune performance, motion, copy, and edge cases together.
Elsewhere
Client feedback
Project feedback, kept in the same context clients use to evaluate freelance work.
Highly recommend Vasyl to work on your software development projects
Great work, thanks for developing the app for us!
Great job on the project. High attention to details and excellent expertise.
great work as usual.
very professional
had to redo some work but Vasyl is a professional very happy to work with him
awesome developer very communicative definitely will work with him again
Thanks to find fast solution for my project. Highly recommend.
Highly recommend Vasyl!!! I was facing really frustrating issues with my webApp hosted on Lovable, especially after moving to a custom domain. This included Google login errors and UI freezes, and crazy webApp bugs. As someone new to this, I was lost. Vasyl quickly diagnosed and expertly fixed all the problems. He skillfully handled the complexities of the authentication setup and the frontend code and backend database (Supabase) issues. The outcome is perfect – Google login now works flawlessly with my custom domain, and deleting posts is smooth with no more UI freezes, amongst a ton of other things he did. If you need help with tricky web app issues, this seller delivers great results, especially if you`re vibecoding. Vasyl is AAA!
Vasyl is a beast of a developer. Not only did he tackle the authentication issues and squash every bug I threw his way, but he also identified and flagged problems I didn’t even know existed. That’s the kind of proactive, detail oriented work that sets him apart. Once again, I highly recommend him. OUTSTANDING developer.
Such a brilliant developer!
We make big project together. Best quality, very great professional. I’m highly recommend.
Vasyl P exceeded my expectations with his professional work as always, His proactive communication and timely delivery made the collaboration smooth and efficient. I will always be working with him because i trust him 100%..I HIGHLY recommend working with him! 🙌
Great freelancer as always, i will always recommend him and we will work again soon. He works very hard and solves any issue that may arrive. He was very patient with me
Tnx for work together, best developer, highly recommend👍
Amazing freelancer, the best I worked with on this platform. He has great communication, hard working, is always available to create solutions for the project at all times and has great technical knowledge. I have recommended him to many of my friends and I will be personally working with him again on many more projects.
Very professional work; all fixes were made very quickly.
Very professional work; all fixes were made very quickly.
I had the pleasure of working with Vasyl P. on a frontend project, and I couldn’t be more satisfied with the results. He delivered high-quality, well-structured, and responsive code, ensuring a seamless user experience. Communication was excellent throughout the project—Vasyl P. was always responsive, proactive, and open to feedback. He not only met all the requirements but also suggested valuable improvements that enhanced the final product. If you’re looking for a skilled, reliable, and detail-oriented frontend developer, I highly recommend Vasyl. I would definitely work with him again in the future!
Great experience working with Vasyl! He delivered high-quality code on time, communicated effectively, and showed excellent technical skills. Highly recommended for anyone in need of a reliable programmer!
About
I work across the full product surface: understanding what needs to be built, shaping the interface, connecting the underlying systems, and refining how everything behaves in production.
The goal is practical: fewer seams between design and engineering, fewer surprises at the edges, and an experience that feels considered from the first interaction to the last.
Start a conversation
Tell me briefly what you’re building and where the hard parts are.
