Marcin Kajor
Senior R&D Engineer Project Lead at Nordic Semiconductor
Cracow Metropolitan Area Poland
Summary
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Rockstar🎓
Top SchoolMarcin Kajor is a Senior R&D Engineer and Project Lead based in the Cracow Metropolitan Area with four years of focused experience in embedded systems and IoT firmware for home automation. He leads development at Nordic Semiconductor, contributing significant open-source work to Matter (Project CHIP) and the nRF Connect SDK—adding app support, DFU, Wi‑Fi, power optimizations and security fixes for real-world Nordic dev kits. Comfortable in C/C++ on Zephyr RTOS, Marcin combines hands‑on firmware delivery with project leadership across product samples, integrations like SSED, and upstream refactors. His background is unusually interdisciplinary: a PhD in Biocybernetics and Biomedical Engineering layered on engineering degrees in materials and biomedical fields, which informs a methodical, systems-level approach to embedded design. Colleagues rely on him to bridge research-grade rigor and production constraints, reducing power and memory issues that commonly plague constrained IoT devices.
4 years of coding experience
8 years of employment as a software developer
Doctor of Philosophy (Ph.D.) Biocybernetics and Biomedical Engineering, Doctor of Philosophy (Ph.D.) Biocybernetics and Biomedical Engineering at AGH University of Krakow
Polish, English, German, Italian
Github Skills (21)
c-language10
connected10
connect-iq10
connections10
zephyr-rtos10
bluetooth-le10
connectivity10
iot10
sys10
matter-js10
smart-device10
embedded10
cprogramming-language10
nrf-connect-sdk10
nordicsemi10
Programming languages (3)
Github contributions (5)
nrfconnect/sdk-nrf
Apr 2022 - Jan 2023
nRF Connect SDK main repository
Role in this project:
Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:558 reviews, 32 commits, 103 PRs in 9 months
Contributions summary:The user, Marcin Kajor, primarily focuses on the development and adaptation of Matter (formerly Project CHIP) firmware for the nRF Connect SDK, particularly for various Nordic Semiconductor development kits. Their work includes implementing DFU (Device Firmware Upgrade) support, adapting applications to the pin control feature, and adding support for Wi-Fi connectivity and diagnostics. Contributions also encompass refactoring samples to align with upstream standards, integrating new features, and fixing issues related to device security and connectivity.
connect-sdknrf-connect-sdkinfinibandlteppp
project-chip/connectedhomeip
Feb 2022 - Oct 2022
Matter (formerly Project CHIP) creates more connections between more objects, simplifying development for manufacturers and increasing compatibility for consumers, guided by the Connectivity Standards Alliance.
Role in this project:Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:69 reviews, 7 commits, 21 PRs in 7 months
Contributions summary:Marcin primarily contributes to the nrfconnect platform within the connectedhomeip repository, working on Matter-related applications. Their work includes adding support for new applications like the all-clusters-app and window-app, optimizing external flash power consumption, and addressing memory leaks. Furthermore, the user is responsible for integrating the Matter project with SSED (Synchronized Sleepy End Device) and fixing the resumption of CASE sessions in the light-switch-app and door lock samples.
connectivity-standards-alliancebuild-with-matterguidedzephyrconnectivity
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