Nikodem Kastelik
Firmware Engineer at Nordic Semiconductor ASA
Cracow Metropolitan Area Poland
Summary
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Rockstar🎓
Top SchoolNikodem Kastelik is a firmware engineer with seven years of experience specializing in embedded systems, real-time control and robotics software, currently building low-level firmware at Nordic Semiconductor in the Cracow area. He brings deep hands-on expertise with AVR and STM32 microcontrollers and has recently expanded into Python and Linux-based development, bridging embedded constraints with higher-level tooling. His open-source contributions to high-profile projects like Zephyr and nRF Connect SDK show a focus on hardware enablement, power efficiency and SoC driver reliability—work that includes Zigbee stack fixes, power profiling and driver updates for Nordic SoCs. Trained in automation and robotics at AGH University, he combines academic control theory with production firmware practice, often addressing subtle hardware-level issues such as retained memory and regulator interactions.
7 years of coding experience
AGH University
English
Github Skills (22)
zephyr-rtos10
c1110
microcontroller10
power-management10
c1710
i2c10
iot10
rtos10
sys10
pwm10
rt10
embedded10
nrf-connect-sdk10
iot-devkit10
nordicsemi10
Programming languages (2)
Github contributions (5)
NordicSemiconductor/nrfx
Jan 2020 - Oct 2022
Standalone drivers for peripherals present in Nordic SoCs
Role in this project:
Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:22 releases, 12 reviews, 12 commits in 2 years 9 months
Contributions summary:Nikodem primarily focused on driver development within the Nordic Semiconductor nrfx repository. Their contributions involved releasing new versions of the nrfx drivers, including updates and bug fixes, specifically for the SAADC peripheral. They also implemented improvements and adjustments to various hardware-specific configurations, including updates for new hardware platforms. The commits reflect a strong understanding of embedded systems principles and the inner workings of Nordic Semiconductor SoCs.
driversnrf52nrf52840nordicperipherals
zephyrproject-rtos/zephyr
Jul 2018 - Apr 2025
Primary Git Repository for the Zephyr Project. Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware architectures.
Role in this project:Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:292 reviews, 53 PRs, 188 comments in 6 years 10 months
Contributions summary:Nikodem primarily contributes to the Zephyr RTOS project by working on Nordic Semiconductor-related hardware, specifically focusing on nRF series devices. Their commits involve porting new PWM and I2C instances, adding support for new devices like the nRF54 series, and aligning the code with the new schemes. They also implement device-specific features and fixes related to retained memory and the DCDC regulator.
bluetooth-lereal-timezephyrsecuregit-repository
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