Czesław Makarski
Lead Firmware Engineer at Lumilens
Krakow, Lesser Poland Voivodeship
Summary
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Rockstar🎓
Top SchoolCzesław Makarski is a Lead Embedded Software Engineer based in Krakow with 7 years of hands-on experience designing and shipping low-level radio and IoT firmware. He progressed from software engineer to product owner and now leads embedded development at VIOTAS, bringing practical expertise from Nordic Semiconductor where he contributed to core nRF Connect SDK and nrfutil projects. His work spans 802.15.4 PHY testing, MPSL/SoftDevice integrations, and secure Zigbee OTA flows—demonstrated by contributions like EUI64 randomization and OTA server updates in the widely used pc-nrfutil tooling. Comfortable bridging product and engineering, he pairs device-level coding and unit testing with API and documentation improvements to reduce field issues. Trained in electronics, telecommunications and experimental physics, he blends rigorous measurement-driven thinking with leadership skills honed as a product owner.
8 years of coding experience
11 years of employment as a software developer
Leading a Winning Team.LEVEL 1: THE FOUNDATIONS OF A YOUNG LEADER, Leading a Winning Team.LEVEL 1: THE FOUNDATIONS OF A YOUNG LEADER at Leaders IslandMoscow State Institute of International Relations (University) MFA Russia MGIMOEngineer's degree, Electronics and Telecommunications, Engineer's degree, Electronics and Telecommunications at AGH University of KrakowMaster of Science (M.Sc.), Experimental physics, Master of Science (M.Sc.), Experimental physics at Jagiellonian University
Russian, Polish, English, French
Github Skills (20)
over-the-air10
python10
ota10
c1110
c1710
iot10
driver10
sys10
embedded10
zigbee10
nrf-connect-sdk10
unit-testing9
apidoc9
zephyr-rtos9
api9
Programming languages (4)
Github contributions (5)
nrfconnect/sdk-nrfxlib
Sep 2020 - Aug 2022
Nordic common libraries
Role in this project:
Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:66 reviews, 13 commits, 4 PRs in 1 year 11 months
Contributions summary:Czesław primarily contributed to the Nordic Semiconductor SDK, specifically focusing on the MPSL (MPSL Protocol interface for Power Amplifier (PA) and Low Noise Amplifier (LNA)) and the nrf_802154 component. Their work involved fixing encryption for 802.15.4, aligning doxygen comments, and updating the SoftDevice and MPSL revisions. These changes suggest a focus on low-level radio drivers, API improvements, and device-specific configurations within an embedded systems context.
data-exchangenordic
nrfconnect/sdk-nrf
Sep 2020 - Mar 2022
nRF Connect SDK main repository
Role in this project:Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:95 reviews, 16 commits, 32 PRs in 1 year 5 months
Contributions summary:Czesław primarily focuses on the nRF Connect SDK, contributing to the embedded systems software development. Their work includes modifications to the MPSL (Multiprotocol Service Layer) for the nRF53, specifically switching from EGU to SWI and removing obsolete checks. The user also addressed documentation and sample code improvements related to 802.15.4, fixing issues and enhancing the sample's documentation and code. These contributions indicate a focus on radio drivers and 802.15.4 PHY testing.
nrf-connect-sdk
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