Guillaume Séguin
Senior Security Engineer at Université de Sherbrooke
Montreal, Quebec, Canada
Summary
👤
Senior🎓
Top SchoolGuillaume Séguin is a Senior Security Engineer based in Montreal with 19 years of experience specializing in authentication, cryptography, identity and PKI across C++, Python and Java environments. He blends deep hands-on engineering—having built enterprise-grade authentication and IAM solutions—with strategic architecture roles at major organizations including Google and the National Bank of Canada. Guillaume has a strong background in both Windows and Linux platforms and cloud-native deployments, and he routinely bridges application security, REST APIs and low-level crypto implementations. Beyond engineering, he teaches security topics at Université de Sherbrooke and has lectured widely, reflecting a commitment to knowledge transfer and workforce development. His long trajectory from embedded and C++ systems to modern cloud security gives him a rare perspective on secure system design across the full stack. Colleagues know him for pragmatic, standards-driven approaches to identity and cryptography that scale in large enterprise environments.
19 years of coding experience
17 years of employment as a software developer
Diplôme d'études collégiales Sciences pures, Diplôme d'études collégiales Sciences pures at Cégep de Sainte-FoyComputer Engineering Artificial Intelligence and robotics, Computer Engineering Artificial Intelligence and robotics at Polytechnique Montréal
English, French, Spanish
Stackoverflow
9,812reputation
1.4mreached
229answers
20questions
authentication
top-5%
ldap
top-1%
cryptography
top-5%
shell
top-5%
windows
top-1%
encryption
top-5%
Github Skills (139)
windows10
security10
encryption10
hashicorp-vault10
node-notifier10
secrets10
vault10
golang10
ldap10
growl10
go10
access-management10
lambda9
notification9
shell9
Programming languages (11)
Github contributions (5)
ixe013/benigma
Nov 2019 - Sep 2022
An Enigma machine as a custom Vault backend. Intented to be a small, self-contained but complete project to bootstrap your Hashicorp Vault plugin development.
Contributions:2 releases, 3 reviews, 33 commits in 2 years 10 months
vault-plugincryptographyhashicorp-vaultenigmaself-contained
ixe013/notifu
May 2007 - Jan 2021
Contributions:10 releases, 47 commits, 2 PRs in 13 years 10 months
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