Maciej Fijałkowski
Technical Program Manager, Pixel Test Engineering at Google
Warsaw, Masovian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolMaciej Fijałkowski is a Technical Program Manager at Google’s Pixel Test Engineering with eight years of hands-on experience in mobile networks, radio protocols and quality assurance. He combines deep GSM/UMTS/LTE and 3GPP expertise with a strong analytics background—building and automating KPI-driven reporting using tools like SwissQual, Tableau and MsSQL and scripting in Python. Previously he led protocol and modem-level debugging at Samsung and drove international benchmarking programs at Systemics-PAB, supervising drive tests and signalling analysis. Uncommonly for a TPM, he contributes kernel-level performance optimizations to high-profile open-source projects (notably XDP work in the torvalds/linux tree), reflecting both systems-level coding chops and practical telecom domain knowledge. Educated to master’s level in Radiocommunication and Multimedia Technology from Warsaw University of Technology, he thrives at the intersection of testing, tooling and operator-facing delivery.
8 years of coding experience
6 years of employment as a software developer
Master's degree, Radiocommunication and Multimedia Technology, Master's degree, Radiocommunication and Multimedia Technology at Warsaw University of TechnologyCOMPUTER AND INFORMATION SCIENCES AND SUPPORT SERVICES, COMPUTER AND INFORMATION SCIENCES AND SUPPORT SERVICES at XXVII Liceum im. Tadeusza Czackiego w Warszawie
English, Polish
Github Skills (7)
c1710
exp10
c1110
linux-kernel10
networking10
performance-optimization9
memory-management9
Programming languages (2)
Github contributions (5)
torvalds/linux
Jan 2023 - Mar 2023
Linux kernel source tree
Role in this project:
Back-end Developer
Back-end DeveloperContributions:15 commits in 1 month
Contributions summary:Maciej primarily focused on optimizing the XDP (eXpress Data Path) implementation within the Linux kernel for the `torvalds/linux` repository. Their work involved refactoring and streamlining the `xdp_buff_xsk` structure, removing unnecessary fields and improving memory management. They made changes to multiple files, including `include/net/xdp_sock_drv.h`, `net/xdp/xsk.c`, and `net/xdp/xsk_buff_pool.c`, aiming to enhance performance and reduce overhead in the XDP data path. These changes included optimizing the handling of Rx buffers and improving the efficiency of completion queue (CQ) operations.
kernellinux-kernellinuxkernel-source
mfijalko/linux
Jul 2023 - Dec 2024
Linux kernel source tree
Contributions:14 pushes, 7 branches in 1 year 5 months
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