Michał Janiec
Senior Frontend Developer. React, Next.js and TypeScript, now also shipping Rails frontends with Stimulus, ERB and Tailwind.
- Location
- Katowice, Poland · remote PL/EU/UK
- Work mode
- Remote · hybrid in Silesia
- Contract
- Full-time · B2B · freelance
- Languages
- Polish (native) · English (B2)
- Availability
- Open to new projects
Experience
5+ YRS- Apr 2025 → now
Visuality — Senior Frontend Developer
Redesigning a large enterprise platform for UK banks, valuers and brokers in property finance. International team, direct client communication, AI-assisted workflow.
Ruby on RailsERBStimulusTailwind CSS - Feb 2025 → now
jemWszkole.pl — Frontend Developer (part-time)
Sole frontend developer of a school-meal platform for parents, pupils and staff across Poland. Modernising a legacy create-react-app codebase without a full rewrite.
ReactTypeScriptChakra UI - Feb 2025 → now
nazielono.pro — Freelance
Built and maintain a Next.js website for a digital marketing and SEO agency. Chose Next.js over WordPress for Core Web Vitals.
Next.jsSEO - Dec 2024 → now
Gainflow — Co-founder
Co-building a gym progress-tracking app. I own the full frontend architecture.
React NativeExpoTypeScriptVictory Native - Jun 2021 → Dec 2024
HexOcean — Frontend Developer
Braintrust, a US Web3 talent marketplace with token and NFT infrastructure. 50-person engineering team; grew from junior to owning features end-to-end.
ReactTypeScriptReduxGraphQLRTK Query
Stack
Daily
- React
- Next.js
- TypeScript
- Tailwind CSS
- Stimulus · ERB
- Claude + MCP
Proficient
- Redux · RTK Query
- GraphQL · REST
- React Native · Expo
- Jest · Testing Library
- Storybook · Figma
Working knowledge
- Ruby on Rails
- WordPress
- Shopify · Liquid
- Core Web Vitals · SEO
- Web3
Education
Power Engineering, Silesian University of Technology, Katowice (2014–2018)
Frontend Development Bootcamp (2020–2021)
Open to full-time, B2B contract or freelance. Remote, or hybrid in Silesia.
Contact me ↗