BIO
Sebastian is a frontend engineering specialist with an exceptional track record of delivering high-quality, accessible web applications. 900+ production commits at The Software House.
He introduced Lighthouse budgets that lifted average SPA scores from 68 to 97 and reduced bundle sizes by 42%. That work directly improved experience for millions of users.
At CloudFloo, Sebastian leads frontend DX — ensuring every pixel is visually appealing, fast, accessible, and themeable. WCAG 2.2 is his floor, not his ceiling.
Sebastian is passionate about design systems and component libraries that let teams ship consistent interfaces at velocity.
EXPERTISE
- React & Next.js (13+)
- Storybook & Design Systems
- Web Accessibility (WCAG 2.2)
- Type-safe APIs with tRPC
- Performance Optimization
- Component Architecture
ACHIEVEMENTS
- 900+ production commits with zero critical accessibility violations
- Improved Core Web Vitals from 68 to 97 across multiple projects
- Reduced bundle sizes by 42% through optimization techniques
- Built design systems used by 50+ developers
- Led accessibility compliance for enterprise clients
- Contributor to React accessibility libraries
EXPERIENCE
Head of Frontend · CloudFloo
2022 — Present- — Leads frontend DX and architecture decisions
- — Established accessibility-first development practices
- — Built reusable component libraries and design systems
Senior Frontend Developer · The Software House
2020 — 2022- — Delivered 900+ production commits with exceptional quality
- — Introduced Lighthouse budgets improving performance
- — Mentored junior developers in React best practices
Frontend Consultant · Various startups
2018 — 2020- — Helped 10+ startups build scalable frontend architectures
- — Specialized in React performance optimization
- — Implemented accessibility standards across client projects
TECHNOLOGIES
ReactNext.jsTypeScriptTailwind CSSStorybooktRPC
ViteJestPlaywrightFigmaAdobe CCWebpack