Grzegorz Andrejczuk
Senior Software Engineer at Team Connect Sp. z o.o.
Warsaw, Masovian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolGrzegorz Andrejczuk is a Senior Software Engineer based in Warsaw with 10 years of experience building Linux userspace applications, kernel core components and device drivers for high-performance systems. He has led development teams at Intel on next-generation NIC drivers and accelerated IPoIB for OmniPath, and worked on HPC AI stacks at Graphcore while currently developing Kubernetes applications. An active contributor to the hwloc project, he implemented architecture-specific tooling and fixes for Intel Knights Landing/Mill, including security and memory-issue patches that improved hardware locality visibility. He combines low-level systems expertise with practical release management and distributed/cloud-native deployment experience, making him adept at bridging kernel internals and production orchestration.
10 years of coding experience
15 years of employment as a software developer
Master of Science (MSc) Telecommunications Engineering, Master of Science (MSc) Telecommunications Engineering at Warsaw University of Technology
English, German
Github Skills (17)
system-programming10
bios10
linux10
hpc10
c1110
hardware10
c1710
topology9
memory-management9
embedded8
performance-tuning8
performance-analysis8
sys8
performance-measurement8
performance-monitor8
Programming languages (1)
Github contributions (5)
open-mpi/hwloc
Dec 2015 - Feb 2018
Hardware locality (hwloc)
Role in this project:
Back-end Developer & System Engineer
Back-end Developer & System EngineerContributions:22 commits, 4 PRs, 9 comments in 2 years 2 months
Contributions summary:Grzegorz primarily contributed to the `hwloc` project by developing and maintaining tools and functionalities specifically for Intel's Knights Landing (KNL) and Knights Mill (KNM) architectures. They added a utility to dump hardware-specific data, which was later integrated to read KNL memory-side cache information. The user also implemented changes to expose cluster and memory modes as info attributes, improving data accessibility. Furthermore, they addressed a security vulnerability and fixed memory issues within the KNL-related code.
localitytopologyhardwarehwlochigh-performance
grzegorz-andrejczuk/hwloc
Sep 2017 - Jul 2021
Contributions:1 push, 4 branches in 3 years 10 months
hardwarehwloclocality
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