Jonathan Yee
Senior Cybersecurity Engineer - Defensive Cyber Operations
San Diego, California, United States
Summary
🤩
Rockstar🎓
Top SchoolJonathan Yee is a Senior Cybersecurity Engineer specializing in defensive cyber operations with five years of focused experience bridging R&D and operational incident response at MITRE and NAVWAR. He designs and validates detection and adversary-emulation capabilities (including contributions to the well-known CALDERA platform) and translates ATT&CK-informed tradecraft into practical threat hunting and secure cloud practices. His background spans network forensics, EDR/alert tuning, and automated cloud malware scanning, complemented by software development and systems integration skills. OSCP, CISSP, GCIH and CCNA-certified, he pairs hands-on offensive-minded tooling with mature policy and standards work for CISA and SCuBA initiatives. Outside work he sharpens skills competing in CTFs, reflecting a continual drive to turn research into operationally useful defenses.
5 years of coding experience
4 years of employment as a software developer
University of California, San DiegoMasters of Science, Computer Science, Masters of Science, Computer Science at Naval Postgraduate School
Github Skills (12)
python10
aiohttp10
api-design9
restful-api9
rest-api9
api-rest9
security-automation8
cybersecurity8
emulation7
file-management7
mitre-attack7
att7
Programming languages (2)
Github contributions (5)
apache/caldera
Dec 2021 - Nov 2022
Automated Adversary Emulation Platform
Role in this project:
Back-end Developer
Back-end DeveloperContributions:17 reviews, 6 commits, 8 PRs in 11 months
Contributions summary:Jonathan primarily focused on improving the agent API and exfiltration functionality of the platform. They made code modifications to the agent API, including documentation updates, spacing corrections, and wording adjustments to improve clarity. Additionally, they contributed to the exfiltration feature by creating a subdirectory structure for exfiltrated files, including modifications to the file service and API endpoints. These changes enhance the platform's usability and data handling capabilities.
emulationadversary-emulationcalderasecurity-automationred-team
yee-jonathan/caldera
Apr 2021 - May 2022
Scalable Automated Adversary Emulation Platform
Contributions:23 pushes, 3 branches in 1 year 1 month
scalableadversaryemulationimplantadversary-emulation
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