Julien C
Principal Security Engineer at Grab
Singapore
Summary
👤
Senior🎓
Top SchoolJulien C is a Principal Security Engineer based in Singapore with a decade of experience and over five years focused on FinTech security across Southeast Asia. He builds application security programs, runs network and API-focused penetration tests, and leads threat modelling and secure design reviews while managing bug bounty triage for platforms like HackerOne. At Grab he progressed from hands-on AppSec roles to leading Red Team and Adversarial AI efforts, blending offensive testing with program-level security strategy. A competitive CTF participant with HackTheBox Elite rank and recent top finishes in AI-focused CTFs, he brings a practical attacker’s mindset grounded in academic research and real-world product security. Notably, he’s expanding into Red Teaming and cloud penetration testing, signaling a shift from application-centric defenses to enterprise-wide adversary simulation.
9 years of coding experience
7 years of employment as a software developer
Bachelor's degree Computer Science, Bachelor's degree Computer Science at Vrije Universiteit Amsterdam (VU Amsterdam)Master's degree Software Engineering, Master's degree Software Engineering at Université de Bordeaux
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (39)
vscode5
neovim5
vim5
vscode-extension5
coingecko5
burp5
scanner4
price4
feed4
currency4
nvim4
embedded4
foundry3
multipart3
volumes3
Programming languages (6)
Github contributions (5)
0xEval/ethernaut-x-foundry
Mar 2022 - Apr 2022
Contributions:51 commits, 38 pushes, 4 branches in 23 days
0xEval/0xeval
Aug 2020 - Feb 2024
Contributions:33 pushes, 1 branch in 3 years 7 months
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