Mark Teffeteller
Security Software Engineer at Google
Mountain View, California, United States
Summary
🤩
Rockstar🎓
Top SchoolMark Teffeteller is a Security Software Engineer based in Mountain View with nine years of experience building and securing scalable systems across companies like Google, Okta, and Netspend. At Google he focuses on fuzzing and Android infrastructure hardening, contributing to the widely used ClusterFuzz project by fixing race conditions, dependency issues, and improving libFuzzer shutdown behavior. He blends hands-on DevOps and security engineering practice with a knack for stability under pressure, having shipped practical fixes across CI and Android toolchains. Comfortable talking to both humans and machines, he pairs a BBA and MS background with a pragmatic, collaborative approach to solving security and operational problems. A subtle strength is his attention to low-level reliability details that prevent subtle, hard-to-diagnose failures in large-scale fuzzing and testing environments.
9 years of coding experience
4 years of employment as a software developer
Master of Science - MS, Master of Science - MS at University of Maryland University CollegeBachelor of Business Administration - BBA, Bachelor of Business Administration - BBA at The University of Texas at Austin
Spanish
Stackoverflow
15reputation
2kreached
1answer
3questions
Github Skills (17)
android-adb10
security10
android10
fuzzing10
adb10
devops10
adbd10
libfuzzer9
python9
cicd7
jaxb6
feign6
namedparameterjdbctemplate6
cng6
java6
Programming languages (10)
Github contributions (5)
google/clusterfuzz
Sep 2022 - Dec 2025
Scalable fuzzing infrastructure.
Role in this project:
DevOps Engineer & Security Engineer
DevOps Engineer & Security EngineerContributions:106 reviews, 34 PRs, 135 comments in 3 years 3 months
Contributions summary:Mark primarily contributes to the project by addressing Android-related infrastructure and security issues. They have fixed bugs in the Android heartbeat mechanism, improved dependency management for Android fuzzers, and resolved race conditions in ADB commands. Moreover, the user added SIGTERM cancellation handling to the libFuzzer process and fixed sanitizer dependency search issues, indicating a focus on stability and security within the fuzzing environment. Their contributions also extend to disabling and managing plugins related to the android environment.
fuzzingsecuritystabilityvulnerabilities
marktefftech/clusterfuzz
Jan 2023 - Dec 2024
Development Fork - Scalable fuzzing infrastructure.
Contributions:111 pushes, 35 branches in 1 year 11 months
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