John Baek
Staff Software Engineer - Security (Red Team) at Slack
Greater Philadelphia United States
Summary
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Senior🎓
Top SchoolJohn Baek is a Staff Software Engineer specializing in red team operations and security engineering with nine years of professional experience and a deep technical foundation in OS/network security, PKI, and trusted computing. He combines hands-on C/C++ systems programming with broad language fluency to design and test defenses for large enterprises, most recently shaping offensive security at Slack. John’s background includes leadership roles building red teams and programs at TD Ameritrade, FusionX, and consulting firms, plus research affiliations with Dartmouth’s PKI/Trust Lab and the Trusted Computing Group, which inform his high-assurance approach. Certified in OSCP, CISSP, and CISA, he bridges technical rigor and policy-level program design—conducting assessments from wireless to application security and compliance across HIPAA, PCI, and SOX. An active OWASP Philadelphia co-leader, he pairs community-driven knowledge sharing with practical attack simulation to help clients prioritize realistic risk remediation. Notably, his profile blends academic research experience with enterprise red team leadership, giving him rare visibility into both protocol-level trust issues and large-scale operational security.
9 years of coding experience
13 years of employment as a software developer
Bachelor of Arts, Computer Science, Bachelor of Arts, Computer Science at Dartmouth College
KoreanGithub contributions (5)
JohnBaek92/Traptitude
Jun 2017 - Feb 2018
Contributions:278 commits, 4 PRs, 247 pushes in 8 months
JohnBaek92/Fast-Break-Stats
Mar 2018 - Feb 2019
Contributions:83 pushes, 1 branch in 11 months
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