Marcin Jeliński
Embedded Software Engineer at amc TECH
Krakow, Lesser Poland Voivodeship
Summary
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RockstarMarcin Jeliński is an embedded software engineer based in Krakow with around five years of professional experience building low-level firmware and IoT solutions. He has a strong focus on Bluetooth Low Energy and nRF Connect SDK work, contributing practical fixes and example implementations for profiles like RSCS and HID as well as handling radio power, timer, and clock configuration issues. At amc TECH he continues to apply hands-on embedded skills honed through prior roles at EC AMC and an early engineering internship at ABB. Comfortable working close to hardware, he brings a pragmatic understanding of radio and timer interactions that reduces integration surprises in product development. Colleagues appreciate that he pairs methodical debugging with real-world device configuration experience, making him effective at moving prototypes into reliable shipped firmware.
5 years of coding experience
6 years of employment as a software developer
Github Skills (15)
timers10
embedded10
fm-radio10
timer10
bluetooth-le10
btle10
nrf-connect-sdk10
radio-control10
bluetooth-low-energy10
sys10
pow8
powersaving8
nrf527
nrf537
zephyr-rtos6
Programming languages (1)
Github contributions (5)
nrfconnect/sdk-nrf
Apr 2021 - Dec 2022
nRF Connect SDK main repository
Role in this project:
Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:652 reviews, 67 commits, 158 PRs in 1 year 8 months
Contributions summary:Marcin primarily contributed to the nRF Connect SDK, focusing on Bluetooth Low Energy (BLE) and embedded systems. Their work included implementing and modifying example code for various BLE profiles like Running Speed and Cadence Service (RSCS) and HID, often involving device-specific configurations and clock initialization. They also addressed issues related to radio power levels, timer configurations, and radio mode switching, demonstrating a strong understanding of low-level radio and timer operations within an embedded context.
nrf-connect-sdk
maje-emb/sdk-nrfxlib
Aug 2022 - Jul 2025
Nordic common libraries
Contributions:28 pushes, 7 branches in 2 years 11 months
nordic
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