About Tim
Dutch
Native or bilingual
English
Fluent
German
Basic
French
Basic
Experience
- HEMASenior Frontend EngineerRETAIL (LARGE RETAILERS)May 2026 - Today (2 months)Amsterdam, NetherlandsAs a Frontend Developer at HEMA, I work within the newly established Engineering Organization, contributing to the digital transformation of one of the Netherlands' most iconic retail brands. My work is primarily focused on frontend development within a modern, TypeScript-first tech stack. I collaborate closely with backend engineers, mobile developers, and product owners across multidisciplinary teams, building scalable and user-facing features that reach thousands of customers daily. In addition to hands-on development, I contribute to shaping engineering culture and practices as HEMA builds its internal organization from the ground up.
- ImpackedSenior Frontend EngineerENTERTAINMENT AND LEISUREJuly 2025 - July 2025Zoetermeer, Netherlands
- Designed and developed a fully responsive landing page using React and Astro, integrated with Sanity CMS — enabling the client to manage and update content independently without developer intervention.
- Delivered semantic, accessible HTML aligned with WCAG standards and brand identity, with attention to SEO and performance (Lighthouse).
- React
- JavaScript
- HTML5
- Tailwind
- Accessibility (WCAG)
- Astro
- Sanity CMS
- Vercel
- CI/CD
- Git
- BolSenior Frontend EngineerRETAIL (LARGE RETAILERS)May 2025 - December 2025 (7 months)Utrecht, Netherlands
- Led the frontend architecture migration of a subscription platform, resulting in a 45% increase in subscriptions versus the rest of the year and over 4,000 new subscribers.
- Developed and launched features driving 20–25% YoY growth in reactivated subscribers and 45–50% YoY growth in new trial subscriptions, sustaining multi-week momentum across acquisition and retention metrics.
- Operated as sole frontend engineer in a backend-heavy team — owning architecture decisions, component library design, and code quality standards.
- Built, tested, and documented a suite of reusable components using React, TypeScript, and GraphQL, contributing to a scalable and maintainable codebase.
- Drove knowledge sharing through technical documentation and guidance, enabling backend colleagues to adopt the new frontend architecture more efficiently.
- React
- TypeScript
- GraphQL
- Tailwind
- Component Library
- CI/CD
- GitLab
- Performance Optimization
- Technical Documentation
- Code Review
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Education
- MSc BusinessUniversiteit Utrecht2018MSc Business
- BSc InformatiekundeUniversiteit van Amsterdam2015BSc Informatiekunde