Senior Frontend Developer

Front-End Development Haarlem, Noord-Holland, Netherlands

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Summary

Frontend developer specializing in high-traffic platforms and scalable systems. Currently ser ving 5M+
monthly users across 8 European markets with measurable impact: 13% conversion improvement
through A/B testing, 20% margin increase through frontend architecture decisions, 85% test coverage
across critical user flows. 8+ years building production applications with Vue.js, React.js, and TypeScript,
including migrating internal systems to Next.js. Specialist in design systems, component architecture,
and per formance optimization. Track record of introducing modern practices automated testing, CI/
CD, design tokensthat improve both developer experience and business outcomes.

Expectations

I'm looking for a Senior Frontend Developer role where I can bring my experience building scalable systems and design systems to a team that values quality and measurable impact.

I thrive in environments that balance speed with quality, where shipping fast doesn't mean sacrificing testing, documentation, or maintainability. I want to join a team where frontend is treated as a craft, not just a support function.