Maarten Horst
Freelance Front-End Developer (React) at Zelfstandig / Eigenaar
Amsterdam, North Holland, Netherlands
Summary
👤
Senior🎓
Top SchoolMaarten Horst is a seasoned front-end developer with 13 years of experience specializing in React and Next.js, delivering polished, production-ready web applications for media and enterprise clients. He combines deep JavaScript/TypeScript expertise with an entrepreneurial mindset demonstrated by founding roles and a long-running freelance practice based in Amsterdam. Notable work includes building interactive, SSR/SSG experiences and content tools for DPG Media and an audio-visual project for BNNVARA, plus meaningful open-source contributions improving react-jsonschema-form's UI and widget behavior. Comfortable across full-stack projects, he pairs technical rigor with a designer’s eye for detail and a collaborative, SCRUM-friendly approach. Outside code he composes classical chamber music, a creative discipline that informs his attention to structure and nuance in software. Open to senior freelance frontend and full-stack engagements where craftsmanship and UX matter.
13 years of coding experience
5 years of employment as a software developer
Compositie (klassieke muziek), Compositie (klassieke muziek) at Amsterdamse Hogeschool voor de KunstenWiskunde, Wiskunde at Universiteit van AmsterdamVWO, VWO at Christiaan Huygens College
Dutch, English, German, French
Stackoverflow
2,947reputation
136kreached
10answers
1question
Github Skills (18)
javascript10
json-schema10
ui-design10
forms10
uid10
front-end-development10
react10
testing9
data-validation9
html6
css-position6
design-patterns6
lint6
css6
browser6
Programming languages (4)
Github contributions (5)
rjsf-team/react-jsonschema-form
Nov 2016 - Nov 2016
A React component for building Web forms from JSON Schema.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:5 commits, 7 PRs, 50 comments in 22 days
Contributions summary:Maarten primarily contributed to the user interface of the `react-jsonschema-form` project. Their work included implementing new features such as wildcard support in `ui:order` for form field ordering and addable/removable options for array items. They also fixed bugs and improved the styling of radio and checkbox widgets. The user added tests and examples to demonstrate the functionality of their contributions.
react-componentreactweb-formsjson-schemajson
TND/webpack-server-runner-plugin
Aug 2016 - May 2017
Contributions:28 commits, 19 pushes, 5 branches in 9 months
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