Jason Geffner
Principal Security Engineer (Senior Director Level) at Microsoft
Seattle, Washington, United States
Summary
👤
Senior🎓
Top SchoolJason Geffner is a Principal Security Engineer and senior director-level leader with 11+ years of focused experience across application security, threat intelligence, malware analysis, incident response, and security automation. He has built and scaled security teams at Fortune 50 companies and bootstrapped security programs at a $122B unicorn, balancing deep technical expertise with pragmatic business risk management. Jason has repeatedly moved between IC, manager-of-ICs, and manager-of-managers roles, running offensive research, red team, and product security functions at Microsoft, Google, Amazon, CrowdStrike, EA, and Aurora. Known as a builder and breaker, he pairs hands-on reverse engineering and R&D chops with vendor and program management to drive measurable security outcomes. Based in Seattle with a Cornell CS background, he brings a rare combination of operational incident command experience and long-term strategic security architecture. An unstated through-line: he consistently translates high-risk research findings into scalable, automated defenses that align to product timelines and business goals.
11 years of coding experience
18 years of employment as a software developer
BS Computer Science, BS Computer Science at Cornell University
Stackoverflow
131reputation
3kreached
1answer
0questions
Github Skills (28)
job-search9
linkedin8
zap8
security8
netstat8
security-scanner7
endpoint6
visual-studio6
auditing5
tcp5
aws5
owasp5
gcp5
infosec4
zaproxy4
Programming languages (3)
Github contributions (5)
geffner/CVE-2020-8289
Sep 2020 - Dec 2020
Contributions:7 commits, 6 pushes, 1 branch in 3 months
geffner/CVE-2020-8290
Sep 2020 - Dec 2020
Contributions:4 pushes, 1 branch in 3 months
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