Jasper Weijts
Ethical Hacker Security Specialist at Onvio
The Hague, South Holland, Netherlands
Summary
👤
Senior🎓
Top SchoolJasper Weijts is an Ethical Hacker and Security Specialist based in The Hague with eight years of hands-on experience in penetration testing, red teaming, and offensive security across web, mobile, infrastructure, ICS/OT and IoT environments. He combines deep technical assessments—including code reviews and system hardening—with pragmatic delivery: clear reporting and actionable remediation sessions for stakeholders. Jasper has supported security programs at large organizations such as Rabobank, Sanoma and DUO while running offensive engagements and bespoke tooling as a freelancer and at Onvio. His background spans both software development and hardware/industrial hacking, enabling him to bridge developer teams and operational technology owners effectively. Known for a persistent “hacker mindset,” he brings practical exploit-focused thinking to help organizations find the gaps attackers would exploit before they do.
8 years of coding experience
1 year of employment as a software developer
Bachelor's degree, Information Technology, Bachelor's degree, Information Technology at Haagse Hogeschool/TH RijswijkMinor, Information Security Management, Minor, Information Security Management at De Haagse Hogeschool / The Hague University of Applied Sciences
English, Dutch
Github Skills (11)
finder5
wordlist4
decoding4
penetration-testing3
tpm3
transaction3
pentesting3
security3
web-application-security3
spi3
bitlocker2
Github contributions (3)
JasperWeijts/hackbar
Jan 2018 - Jan 2018
Contributions:2 pushes, 1 branch in 1 day
onvio/wordlists
Jun 2021 - Oct 2021
Shared wordlists used for common subdomains , directory bruteforcing etc.
Contributions:2 commits, 3 pushes in 4 months
web-application-securitybugbountysecuritypenetration-testingbruteforcing
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