Vasyl Kyryliuk

Vasyl Kyryliuk

Founder of VAT Engine - EU VAT API

About

I’m a frontend developer and solo founder with a background in e-commerce. I enjoy turning complicated, overlooked problems into clear and reliable products, and learning whatever is needed to take an idea from concept to production. I’m currently building VAT Engine, but I’m also here to meet thoughtful builders, exchange honest feedback, and learn from people creating genuinely useful technology. I value curiosity, responsibility, clear communication, and steady execution over hype. My ambition is to build sustainable products that make complex business processes easier for developers and growing teams.

Badges

Tastemaker
Tastemaker
Gone streaking
Gone streaking
Gone streaking 5
Gone streaking 5

Maker History

  • VAT Engine
    VAT EngineEU VAT calculation and compliance API for e-commerce
    Jul 2026
  • 🎉
    Joined Product HuntJuly 17th, 2026

Forums

Hi Product Hunt — I’m Vasyl, a solo founder building in EU tax tech

Hi everyone! I m Vasyl, a Ukrainian developer currently based in Germany.

My background is mainly in frontend development and e-commerce, but over the past year I ve been expanding into backend engineering, infrastructure, security, and product development while building my first startup as a solo founder.

I m currently working on VAT Engine, an EU VAT calculation and compliance platform for developers and e-commerce teams. I started it after seeing how quickly VAT becomes fragmented across countries, product categories, transaction dates, thresholds, integrations, and reporting workflows.

Building it has pushed me far beyond writing interface code. I now work across Go, Next.js, PostgreSQL, Redis, Docker, APIs, commerce integrations, testing, security, documentation, and the less comfortable founder tasks such as positioning, outreach, and customer discovery.

The Cash Flow Risk Simulator (CFRS)

I've made this tool called the Cash Flow risk simulator, from the very obvious name you can tell what it does, it basically takes simple financial records whether tangible or intangible, and quantifies the probability of failure. As a business owner the thought of your business failing is always something that looms overhead of founders alike. With my tool you can better understand the risk of failure, how much runway you have, and how to optimize for the lowest chance of failure. The product is still in beta and feedback on my software would be much appreciated. The link for the product will be in my profile if anybody would like to test the early stages of a much bigger vision.

1d ago

Building an AI Software Engineering Workspace

For the past few months, I have been working on Navigator.

The objective here is not to create another AI chatbot or another code generator.

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