Agata Gruza
Sr. Performance Engineer, Apple Pay And Wallet
Austin, Texas, United States
Summary
👤
Senior🎓
Top SchoolAgata Gruza is a senior performance engineer at Apple Pay and Wallet with a decade of experience optimizing systems from Linux kernel mitigations to Big Data frameworks like Hadoop, Spark, and Cassandra. Known for deep CPU and server performance expertise, she has root-caused critical kernel and microcode issues at Intel and contributed security checks for high-profile vulnerabilities in the widely used spectre-meltdown-checker. She blends hands-on profiling (VTune, perf, FlameGraph) and cloud/container performance work with a strong engineering education (MS Computer Science) and practical product sense from running a restaurant. A builder and community organizer, she founded the Women in Big Data North West chapter and has trained engineers internationally on performance methodology. Her work sits at the intersection of security, low-level systems, and large-scale data performance, bringing measurable speedups and mitigation guidance to production environments.
10 years of coding experience
7 years of employment as a software developer
Master's degree, Mathematics and Computer Science, Master's degree, Mathematics and Computer Science at Katolicki Uniwersytet Lubelski Jana Pawła IIAndroid Developer Nanodegree, Scholarship recipient sponsored by Google, Android Developer Nanodegree, Scholarship recipient sponsored by Google at UdacityMaster's degree, Computer Science, Master's degree, Computer Science at Montana State University-Bozeman
English, Polish, Russian, French
Github Skills (3)
bash10
it-security10
security10
Programming languages (2)
Github contributions (5)
speed47/spectre-meltdown-checker
May 2019 - Apr 2020
Reptar, Downfall, Zenbleed, ZombieLoad, RIDL, Fallout, Foreshadow, Spectre, Meltdown vulnerability/mitigation checker for Linux & BSD
Role in this project:
Security Engineer
Security EngineerContributions:5 commits, 12 PRs in 11 months
Contributions summary:Agata focused on enhancing the `spectre-meltdown-checker` tool by adding support for new CPU vulnerabilities. They incorporated checks for Microarchitectural Data Sampling (MDS), Transactional Synchronization Extensions (TSX) Asynchronous Abort (TAA), and Special Register Buffer Data Sampling (SRBDS). The contributions involved modifying the bash script to identify and report on these vulnerabilities, adding new cve checks and improving the tool's overall coverage of hardware security issues. Further they implemented enhancements for IBRS capabilities and a minor typo fix.
kernelzombieloadcheckercve-2018-3646fallout
agruza/spectre-meltdown-checker
May 2019 - Jun 2020
Spectre & Meltdown vulnerability/mitigation checker for Linux & BSD
Contributions:3 pushes, 7 branches in 1 year 1 month
checkermeltdownsecuritylinuxbsd
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