Felix Matenaar
Engineer, Leader, Advisor, Speaker
Email: felix.matenaar@gmail.com
LinkedIn: linkedin.com/in/felix-matenaar
Resume: Download PDF
Blog: Blog
Professional Summary
Engineering leader with 13 years of experience building secure, scalable systems at companies including Google, Asana, and Block. Proven track record of growing and leading high-performing teams, driving security strategy at the executive level, and delivering measurable business impact. Passionate about advancing security practices and enabling organizations to build trusted platforms.
Experience
Google, Mountain View
Engineering Manager (Present)
- Finding needles in planet-scale haystacks, fast!
Asana, San Francisco
Engineering Manager, Head of Product Security (2022–2025)
- Led security strategy across Product, Infrastructure, and Data Security functions
- Directed a security organization of 30 engineers; coached managers to deliver measurable outcomes
- Presented enterprise security risks to the board and secured executive funding for remediation
- Established an AI security team for Asana's AI Studio, building trust through robust safeguards
- Architected FedRAMP security and performance controls, enabling $37M in annual recurring revenue
- Led incident response efforts to maintain customer trust and protect company reputation
Block (formerly Square), San Francisco
Software Engineer & Engineering Manager (2019–2022)
- Built and led a team of 12 engineers addressing critical security challenges across all business units
- Designed tamper-proof mobile point-of-sale systems, enabling payments expansion into international markets
- Directed threat research initiatives and delivered advanced tamper detection capabilities
- Implemented endpoint fingerprinting solution that reduced fraud-related losses by $10M annually
Google, Mountain View
Software Engineer, Technical Lead (2016–2019)
- Created Cloud IAM Policy Intelligence, enabling least-privilege access for billions of users
- Collaborated with machine learning teams to develop and launch IAM role recommendations
- Conducted threat modeling for Chrome's supply chain, laying groundwork for Google's SLSA framework
Bluebox, Vera, Yik Yak — Bay Area Startups
Software Engineer, Security Researcher (2012–2016)
- Early-stage startup experience (0 to 1) at companies later acquired, with patented technology and broad industry recognition
- Full-stack software engineering across mobile applications and backend systems
- Conducted security research leading to discovery of the Android Master Key vulnerability, presented at Black Hat USA
- Developed patented anti-tamper and hook detection technologies for Android applications
Publications and Community Work
- Conference Program Review Committee (2025): BSidesSF – Reviewed conference program submissions across various areas including AI Security and Application Security.
- Podcast (2024): Building Resilient Security Practices – Guest appearance discussing scalable and resilient approaches to enterprise security at Asana.
- Conference Talk – OWASP (2024): Effective Security Design Review Program – Best practices for scalable security reviews in modern engineering organizations.
- Conference Talk – BSidesSF (2024): Effective Security on a Tight Budget – Strategies for maintaining strong security in resource-constrained environments.
- Patent (2015): Anti-Tamper Mechanism for Android Applications – Innovations in defending mobile apps from reverse engineering and tampering.
- Patent (2014): Android Hook Detection and Prevention – Techniques for detecting and mitigating runtime hooking on Android systems.
- Conference Talk – BlackHat USA (2013): Android Master Key Vulnerability – Presentation uncovering a critical flaw in Android's APK verification.
- Conference Talk – Source Dublin (2013): Android Reverse Engineering and Defenses – Exploration of reverse engineering tactics and corresponding defensive strategies.
- Research Paper (2012): CIS: The Crypto Intelligence System – Paper on automatic detection and localization of cryptographic functions in malware. Presented at IEEE MALWARE.
Education
RWTH Aachen University — Bachelor of Science, Computer Science (2008–2012)
- Thesis research published at the IEEE MALWARE Conference
- Competed in the DEF CON CTF hacking competition, Las Vegas (2012)
- Focus areas: Mathematics, Security, Distributed Systems, Software Design and Testing
Hobbies
- Track Days — Active participant in High-Performance Driving Events (HPDEs) throughout Northern California. Current personal best: 1:51.14 at Sonoma Raceway in a 2021 BMW M2 Competition.
- Scuba Diving — Certified diver since 2020, with additional certifications in rescue diving, nitrox, drysuit, and introductory cave diving. Passionate about exploring underwater environments worldwide.
- Travel — Explored 28 countries across all continents, with a curiosity for experiencing diverse cultures and landscapes.