Marcin Marzewski
Senior Frontend Fullstack Engineer Web3 at LEOCODE
Warsaw, Masovian Voivodeship, Poland
Summary
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Senior🎓
Top SchoolMarcin Marzewski is a Senior Frontend Fullstack Engineer based in Warsaw with 11+ years of commercial experience and a 15-year development background, specializing in TypeScript-driven frontends and modern JAMstack architectures. He blends deep frontend craftsmanship—React, Next.js, Gatsby, Tailwind—with fullstack and Web3 skills (Solidity, wagmi/viem) and has built AI-native SaaS prototypes integrating LLMs and Opensearch. Known for optimizing code and creating engaging user experiences, he’s comfortable leading estimates, reviews, and mentoring while maintaining strong product and documentation standards. A prolific freelancer-turned-senior engineer, he brings practical e-commerce and mobile (React Native) experience plus a curiosity for game and WebGL work, underscoring a versatile, build-first mentality.
11 years of coding experience
13 years of employment as a software developer
Military University of TechnologyComputer Engineering Computer Science, Computer Engineering Computer Science at Uniwersytet Warmińsko-Mazurski w Olsztynie
English, Polish
Github Skills (15)
shopify2
nextjs2
firebase2
typescript2
shopify-app2
polaris1
trpc1
embedded1
storage1
godot1
javascript1
firebase-database1
firebase-realtime-database1
react1
firebase-storage1
Programming languages (3)
Github contributions (5)
4screens/angular-socialhub
Oct 2015 - Nov 2015
Contributions:100 pushes, 1 branch, 28 tags in 1 month
typescriptangular
e9aru/test
Apr 2015 - Sep 2020
Contributions:2 PRs, 6 pushes, 4 branches in 5 years 5 months
playground
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