Olivier Flentge
Creative Developer & CTFer
I am a passionate technologist with a broad set of skills in programming, design, and cybersecurity. My journey began in my teenage years, exploring software through the creation of cheats, and has evolved into a career focused on ethical hacking, software development, and innovative web solutions.
About Me
A few fun facts and milestones from my path as a technologist
The Beginning
Teenage Years
Started my tech journey by creating game modifications and exploring software vulnerabilities, giving me a unique perspective on how systems work.
Fun fact: My first code was a cheat for a popular FPS game!
Certifications
Continuous Learning
Completed Harvard's CS50 certification in Computer Science for Web Programming and earned Certified Ethical Hacker (CEH) from Cisco.
Fun fact: I bricked my computer while doing a CS50 assignment!
Current Work
Interactive X-Wall
Working at a start-up in Hengelo focused on gamification technology, creating solutions that combine gaming, sports, and learning.
Fun fact: I started as intern at the company!
Competitions
Skills Heroes 2025
Second place in the Skills Heroes Cyber Security competition (2025), showcasing exceptional skills in cybersecurity challenges.
Fun fact: Tim and I have been collaborating on projects together for over a decade!
Things That Interest Me
"Security is not a product, but a process."
— Bruce Schneier
TeamNL ECSC 2025
Selected to represent the Netherlands at the European Cybersecurity Challenge
TeamNL
Netherlands National Team
TeamNL is the official Dutch national cybersecurity team, consisting of the country's most talented young cybersecurity professionals selected through rigorous competitions and assessments.
ECSC
European Cybersecurity Challenge
The European Cybersecurity Challenge is the premier international CTF competition where the best young cybersecurity talents from across Europe compete in diverse challenges spanning multiple cybersecurity domains.
Successfully selected for the 2025 TeamNL roster after demonstrating expertise in various cybersecurity disciplines including web security, cryptography, reverse engineering, and digital forensics through national CTF competitions and assessments.
My Skills
A comprehensive overview of my technical expertise and proficiency levels.
Web Security
Passionate about web security with hands-on experience in identifying vulnerabilities and implementing secure coding practices.
Web Development
Experienced in building modern web applications using PHP, JavaScript and React, with a focus on security and clean code.
Game Development
Started programming journey with game modifications, now developing interactive gaming experiences using C# and Unity.
UX/UI Design
Developing eye-catching and user-friendly interfaces for web applications, with experience in modern design principles.
Get In Touch
I'm always open to discussing new projects, creative ideas, or opportunities to be part of your vision.