Mateusz Chrzanowski

I’m a full-stack developer with over 6 years of experience, specializing in Web3 products and focused on building scalable, user-friendly applications that connect blockchain technology with real-world use cases.

My core expertise lies in React and Next.js (with experience in Vue), where I implement performant, intuitive frontends with strong attention to UX. On the backend, I work with Node.js and NestJS, along with PostgreSQL, to build reliable APIs and robust data layers. I regularly integrate Web3 components such as smart contract interactions, wallet authentication, and seamless on-chain/off-chain data flows.

I independently implemented the frontend and supporting backend services for a decentralized NFT marketplace, enabling creators to list and sell digital assets as NFTs, while buyers can browse, purchase, and trade them using cryptocurrency. My responsibilities focused on frontend architecture, Web3 integration, and backend API implementation.

I’ve worked on products that bridge digital assets with physical items, as well as creator platforms and consumer-facing applications, always prioritizing clean architecture, maintainable codebases, and long-term scalability.

I’m comfortable owning features end-to-end - from product logic and database design to frontend implementation and blockchain integration - ensuring high-quality delivery across the entire stack.