Edwin Siebel
Senior Security Specialist Pentest at Access42
Amersfoort, Utrecht, Netherlands
Summary
👤
Senior🎓
Top SchoolEdwin Siebel is a Senior Security Specialist and pentester with a decade of experience blending hands-on development and offensive security. Based in Amersfoort, Netherlands, he brings OSWE-certified expertise in web, API, and mobile application hacking, alongside cloud, automation, and testing skills. He progressed from full-stack and DevOps roles into lead developer and security specialist positions, applying practical knowledge of PHP, Laravel, containers, CI/CD, and Elasticsearch to harden systems. At Access42 he focuses on advanced penetration testing and security assessments, while his background in digital agencies gives him an uncommon appreciation for developer workflows and deploy-time risks. Trained originally in Human Movement Sciences, he pairs analytical rigor from academia with creative problem solving in security. Colleagues know him as a developer-minded hacker who automates repeatable findings into pragmatic testing and remediation processes.
10 years of coding experience
8 years of employment as a software developer
Master of Science (M.Sc.), Human Movement Sciences, Master of Science (M.Sc.), Human Movement Sciences at Vrije Universiteit AmsterdamNatuur en Gezondheid, Natuur en Gezondheid at Coornhert Gymnasium
Dutch, English, Spanish
Github Skills (117)
metadata10
jwt-authentication10
flare10
clear-site-data10
php-library10
elasticsearch10
opengraph10
seo10
shortcode10
wordpress10
custom-fields10
wordpress-api10
meta-tags10
dsl10
web-token10
Programming languages (4)
Github contributions (5)
edwinsiebel/shortcake
May 2017 - Sep 2018
Shortcake makes using WordPress shortcodes a piece of cake.
Contributions:1 push, 3 branches in 1 year 5 months
piecewordpressphpwordpress-pluginshortcodes
edwinsiebel/ginger
Jul 2017 - Sep 2017
Contributions:2 PRs, 2 pushes, 6 branches in 2 months
opt-inpolicywordpresscompliantopt
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