Michael Van Leeuwen
Senior Security Software Engineer at Microsoft
Greater Seattle Area United States
Summary
👤
Senior🎓
Top SchoolMichael Van Leeuwen is a Senior Security Software Engineer with eight years of hands-on experience building and breaking Office security at Microsoft, focused on AppSec, OpSec, penetration testing, red teaming, SDL threat modeling, and tooling. A Rochester Institute of Technology Computing Security graduate, he rose from intern roles on Office pentesting and licensing teams to lead offensive security efforts that both find critical vulnerabilities and harden product defenses. He blends deep technical curiosity with practical engineering—shipping security tools and automation that scale across large product surfaces in the Greater Seattle area. Michael’s background leading student organizations and hackathons at RIT hints at a knack for community-driven mentorship and rapid prototyping under pressure. Notably, his career path shows a consistent loop of offensive research informing secure development practices, making him equally effective at breaking assumptions and building resilient systems.
8 years of coding experience
6 years of employment as a software developer
Bachelor of Science - BS Computing Security, Bachelor of Science - BS Computing Security at Rochester Institute of TechnologyDiploma with Honors Summa Cum Laude, Diploma with Honors Summa Cum Laude at William Mason High School
Stackoverflow
1reputation
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Github Skills (69)
parser10
excel10
serde10
analyzer10
vba10
opendocument10
obfuscator10
formatter9
powershell9
reader9
security9
linter9
prismic9
javafx9
obfuscation9
Programming languages (13)
Github contributions (5)
MJVL/mjvl.sh
Mar 2019 - Aug 2024
Contributions:29 pushes in 5 years 6 months
MJVL/AP-Computer-Science-Resources
Dec 2017 - Jan 2018
Contributions:34 commits, 7 pushes in 1 month
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