Sebastiaan De Rooij
Web Application Developer
Utrecht, Netherlands
Summary
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Rockstar🎓
Top SchoolSebastiaan De Rooij is a web application developer with 12 years of experience designing robust, performant, and manageable systems, currently focused on devops practices using CoreOS, Kubernetes, and Docker. Based in Utrecht, he blends backend PHP expertise with architecture and operational concerns, ensuring applications are testable and maintainable. His open-source contributions to the php-saml toolkit emphasize code quality, documentation, and test suite modernization, reflecting a pragmatic commitment to long-term project health. Having worked across agencies and product teams since 2008, he brings both legacy PHP knowledge and modern containerized deployment experience to projects. Beyond coding, he pairs technical work with community-minded roles, indicating he values readable code and practical collaboration.
12 years of coding experience
5 years of employment as a software developer
Bachelor of Science (BSc), Information Sciences, Bachelor of Science (BSc), Information Sciences at Christelijke Hogeschool WindesheimGymnasium, Highschool, Gymnasium, Highschool at CSG Johannes CalvijnElectrical Engineering, Electrical Engineering at Delft University of TechnologyEvangelische Hogeschool Amersfoort
Stackoverflow
331reputation
56kreached
13answers
0questions
Github Skills (18)
saml10
php10
unit-testing9
phpunit9
code-formatting8
documentation8
coding-style8
code-standards8
xml7
highcharts6
eval6
response-headers6
jquery6
debugging6
ajax6
Programming languages (11)
Github contributions (5)
SAML-Toolkits/php-saml
Apr 2015 - Jun 2017
Simple SAML toolkit for PHP
Role in this project:
Back-end Developer
Back-end DeveloperContributions:9 commits, 11 PRs, 14 comments in 2 years 1 month
Contributions summary:Sebastiaan primarily focused on code style improvements and documentation updates within the PHP SAML toolkit. They made several commits fixing docblocks and codestyle to increase readability and maintainability. Additional contributions include upgrading PHPUnit and fixing test issues, ensuring the project's test suite is up-to-date and functional. There were also changes in the xmlseclibs and changes to address compatibility for php7.
samlphpsaml2
DotYou/kyraelisabeth
Nov 2016 - Nov 2020
Contributions:18 PRs, 12 pushes, 3 branches in 4 years 1 month
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