Sébastien Chagnon
Senior Software Developer at Qohash
Montreal, Quebec, Canada
Summary
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Senior🎓
Top SchoolSébastien Chagnon is a Senior Software Developer based in Montreal with 10 years of experience building secure, cloud-native systems across full-stack, embedded, and cryptographic domains. He holds a Master’s in Software Security (Cryptography) and blends hands-on implementation—ranging from JavaCard FIDO authenticators to Go services and Electron/React UIs—with architecture and CI/CD expertise. At Kelvin Zero he delivered a CTAP 2.1 WebAuthn smart card applet and contributed to low-level security fixes, and at Qohash he now focuses on protecting sensitive enterprise data flows. Comfortable moving between front-end, back-end, and kernel-level code, he also designs threat models and operational monitoring for production reliability. A proactive collaborator and former technical lead for cloud-deployed clinical research tools, he pairs pragmatic engineering with a continuous-learning mindset. Outside work he channels systems thinking into space exploration interests and endurance cycling, reflecting a taste for complex, long-term challenges.
9 years of coding experience
5 years of employment as a software developer
Master of Engineering - MEng, Software Security - Cryptography, Master of Engineering - MEng, Software Security - Cryptography at Polytechnique Montréal
Github Skills (17)
minecraft9
bukkit9
angular8
react8
spigot8
typescript8
javascript8
nodejs8
gameplay7
java7
paper7
mechanics6
plugin6
high-performance5
web-performance4
Programming languages (4)
Github contributions (5)
ChagnonSebastien/timesheets-depricated
May 2019 - Jan 2022
Contributions:2 PRs, 7 pushes, 1 branch in 2 years 7 months
ChagnonSebastien/Wizard
Mar 2020 - Jan 2021
Contributions:79 commits, 35 pushes, 3 branches in 9 months
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