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Jan Kowalewski

PROFILE

Jan Kowalewski

Over a three-month period, this developer expanded MCUboot hardware support in the zephyrproject-rtos/mcuboot repository by adding ctcc/nrf52840 and ctcc/nrf9161 board targets, introducing per-board configuration files and optimizing boot time through logging adjustments. In telink-semi/zephyr, they stabilized the SAM0 RTC timer driver by correcting MCLK initialization, improving build reliability and enabling downstream features. Their work in nxp-upstream/zephyr addressed configuration handling in the Hawkbit management subsystem, reducing deployment errors by ensuring proper conditional directives. Throughout these projects, they applied expertise in C programming, embedded systems, and configuration management to deliver targeted, maintainable improvements across multiple codebases.

Overall Statistics

Feature vs Bugs

33%Features

Repository Contributions

3Total
Bugs
2
Commits
3
Features
1
Lines of code
37
Activity Months3

Work History

March 2026

1 Commits

Mar 1, 2026

Month: 2026-03 Concise monthly summary focusing on business value and technical accomplishments achieved in the nxp-upstream/zephyr repository. Delivered a critical bug fix to stabilize Hawkbit management configuration handling and improved configuration reliability across Hawkbit deployments. The change improves overall system reliability and reduces risk of deployment failures in production environments.

February 2025

1 Commits

Feb 1, 2025

February 2025 performance summary for telink-semi/zephyr: Stabilized the SAM0 RTC timer driver initialization to ensure reliable MCLK configuration and reduce build-time failures. The fix ensures proper MCLK peripheral initialization by using the correctly defined mclk pointer and mclk_mask during init.

December 2024

1 Commits • 1 Features

Dec 1, 2024

December 2024: Delivered expanded hardware support for MCUboot within Zephyr by adding ctcc/nrf52840 and ctcc/nrf9161 board targets. The work included per-board configuration files, enabling MCUboot serial configurations, and boot-time optimizations by disabling logging. This broadens MCUBOOT compatibility to additional platforms and enhances boot reliability and performance, aligning with ongoing goals to support diverse hardware in Zephyr MCUBOOT.

Activity

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Quality Metrics

Correctness100.0%
Maintainability100.0%
Architecture100.0%
Performance93.4%
AI Usage20.0%

Skills & Technologies

Programming Languages

C

Technical Skills

BootloadersC programmingDriver DevelopmentEmbedded SystemsHardware ConfigurationRTOSconfiguration managementembedded systems

Repositories Contributed To

3 repos

Overview of all repositories you've contributed to across your timeline

zephyrproject-rtos/mcuboot

Dec 2024 Dec 2024
1 Month active

Languages Used

C

Technical Skills

BootloadersEmbedded SystemsHardware ConfigurationRTOS

telink-semi/zephyr

Feb 2025 Feb 2025
1 Month active

Languages Used

C

Technical Skills

Driver DevelopmentEmbedded Systems

nxp-upstream/zephyr

Mar 2026 Mar 2026
1 Month active

Languages Used

C

Technical Skills

C programmingconfiguration managementembedded systems