Rien Coertjens
Fietsenmaker - Owner at Fietsenmakker
Antwerp, Antwerp, Belgium
Summary
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RockstarRien Coertjens is a senior full-stack engineer based in Antwerp with eight years of experience crafting high-performance, design-driven web applications. He blends a strong eye for UI/UX with practical backend ownership, having rebuilt key patient-facing search and backoffice systems for healthcare and unified component libraries to eliminate thousands of lines of duplicate code. Rien has improved performance measurably—raising page speed scores from ~50 to 95+—and contributed front-end fixes and accessibility enhancements to the prominent Gatsby project. Comfortable working across international teams, he mentors peers through pair programming and knowledge-sharing while continuously refining testing and delivery workflows. Unusually, his background includes hands-on roles in the cycling and tourism sectors, which informed his collaborative, customer-oriented approach to product design.
8 years of coding experience
10 years of employment as a software developer
English, French, Dutch, Spanish
Stackoverflow
133reputation
27kreached
2answers
7questions
Github Skills (19)
javascript10
web-application10
css10
ui-design10
uid10
front-end-development10
webapp10
gatsbyjs10
gatsby10
react10
accessibility9
html6
form-helper6
google-analytics-api6
ajax6
Programming languages (7)
Github contributions (5)
gatsbyjs/gatsby
Sep 2018 - Sep 2019
React-based framework with performance, scalability, and security built in.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:5 commits, 4 PRs, 22 comments in 11 months
Contributions summary:Rien primarily contributed to the front-end of the Gatsby website, focusing on the "www" directory. Their commits involved updates to the showcase section, including layout adjustments, the addition of icons and buttons, and the correction of URLs. Furthermore, they addressed accessibility concerns and made various UI/UX enhancements. These changes improved the layout and user experience of showcase pages.
reactsecuritygatsbystatic-site-generatorweb-app
riencoertjens/final-vrp
Aug 2019 - Nov 2022
Contributions:39 PRs, 8888 pushes, 1857 branches in 3 years 4 months
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