Louis Dion-marcil
Principal Application Security Consultant
Dunham, Quebec, Canada
Summary
👤
Senior🎓
Top SchoolLouis Dion-marcil is a Principal Application Security Consultant with 13 years of hands-on experience securing web applications and conducting offensive security research, currently at Mandiant/Google Cloud. He blends deep AppSec expertise—pentesting, malware reverse engineering, and automation—with a researcher’s curiosity, regularly turning findings into community-facing writeups and talks. His background spans product-side roles and incident-driven research (ESET malware analysis, GoSecure research contributions), giving him an uncommon perspective on both attacker tooling and defensive engineering. Based in Dunham, Quebec, he pairs formal software engineering training with practical security delivery, often building tools and fixes from the code level up.
13 years of coding experience
2 years of employment as a software developer
Bachelor’s Degree, Computer Software Engineering, Bachelor’s Degree, Computer Software Engineering at Université du Québec - Ecole de Technologie supérieureDiplôme d'Études Collégiales, Computer Science, Diplôme d'Études Collégiales, Computer Science at Champlain College Saint-Lambert
French, English
Github Skills (186)
end-to-end-encryption10
pgp10
security10
vim10
chat10
spacemacs10
dockerfile10
plsql10
fingerprint10
client-library10
infosec10
melpa10
emacs-lsp10
active-directory10
emacs10
Programming languages (15)
Github contributions (5)
ldionmarcil/dotfiles
Mar 2014 - Dec 2018
Contributions:21 commits, 13 pushes, 1 comment in 4 years 10 months
ldionmarcil/sudo-backdoor
Jun 2015 - Jun 2017
Contributions:11 commits, 10 pushes, 1 branch in 2 years
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.