Willem-jaap Klepper
Eigenaar & Software Developer at Pixel Perfect
Middelharnis, South Holland, Netherlands
Summary
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Rockstar🎓
Top SchoolWillem-jaap Klepper is a hands-on software developer and founder with six years of experience building performant, user-centered web platforms from startup SaaS to large e-commerce systems. As owner and frontend/UX lead at Pixel Perfect he combines product-minded engineering with clean frontend architecture—Next.js, React and TypeScript—while also shipping Laravel backend work. His background includes embedded retail systems (native POS with hardware integrations) and modernizing legacy stacks, giving him a practical eye for long-term maintainability and operational efficiency. An active OSS author (CSS Clamp, Laravel Env), he blends component-driven UI design with pragmatic backend integrations to help scale businesses without accruing technical debt.
5 years of coding experience
2 years of employment as a software developer
Student, Software Developer, Applicatie- & Mediaontwikkelaar, Student, Software Developer, Applicatie- & Mediaontwikkelaar at Hoornbeeck College
Stackoverflow
52reputation
126reached
4answers
0questions
Github Skills (88)
storybook10
authentication10
bundler10
encryption10
hybrid10
javascript10
linux10
browser10
laravel10
toast10
react-framework10
monorepo10
compiler10
rust10
static-site-generator10
Programming languages (4)
Github contributions (5)
pixel-perfect-agency/eslint-config-pixel
Mar 2023 - Feb 2025
Strict ESLint config for Next.js with Typescript maintained and used by Pixel Perfect Agency
Contributions:4 releases, 1 review, 96 PRs in 1 year 11 months
Willem-Jaap/key-debugger
Jan 2024 - Feb 2025
Key Debugger is a tool that helps you debug keyboard and mouse events. It shows you the key code, key name, and key location for any key you press.
Contributions:165 PRs, 166 pushes, 2 branches in 1 year
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