Ruben Roessink
Cyber Security Engineer at Politie Nederland
Netherlands
Summary
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Senior🎓
Top SchoolRuben Roessink is a Cyber Security Engineer with 11 years of experience, currently protecting critical infrastructure at Politie Nederland after a tenure delivering managed security services and red-team expertise at Thales. He holds an MSc in Cyber Security from the University of Twente and combines deep technical knowledge of network security with practical skills in pentesting, digital forensics and SOC operations. Known for analytical precision and clear communication, he also brings cross-disciplinary awareness of law, politics and world affairs to risk-informed security decisions. Outside work he sharpens his skills through CTFs, writes automation code for daily problems, and plays field hockey—illustrating a blend of competitive problem solving and team-oriented leadership.
11 years of coding experience
4 years of employment as a software developer
Master, Cyber Security, 9, Master, Cyber Security, 9 at Universiteit TwenteVWO, VWO at Gymnasium Celeanum
Stackoverflow
11reputation
208reached
0answers
1question
Github Skills (4)
encryption9
cybersecurity9
floating-point6
python6
Programming languages (3)
Github contributions (5)
rubengrootroessink/IKK-query-recovery-attack
Jul 2020 - Aug 2020
This repository contains my implementation of the IKK attack as proposed by Islam et al. in their paper 'Access Pattern disclosure on Searchable Encryption: Ramification, Attack and Mitigation'. I used this code for my graduation thesis at the University of Twente for the Cyber Security Master program (part of the Computer Science Master).
Contributions:2 commits, 3 PRs, 1 push in 29 days
cybersecurityencryptionpython3query-recoverysearchable-encryption
rubengrootroessink/AdventOfCode
Dec 2020 - Dec 2025
Contributions:186 pushes, 1 branch in 5 years 1 month
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