Jarosław Pelczar
Principal Software Engineer at Samsung Electronics
Warsaw, Masovian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolJarosław Pelczar is a Principal Software Engineer based in Warsaw with 8 years of formal experience and a deep, hands-on background in low-level systems engineering. He specializes in C/C++, embedded and real-time OS design, assembly across x86/ARM/AVR families, FPGA core development and middleware, and has significant experience with mobile and desktop stacks like Java, C#, and Qt. At Samsung he progressed from software engineer to principal, driving architecture and stability work on performance-critical platforms. He is an active contributor to the Haiku open-source OS, where his patches advanced ARM64 support, bootloader memory alignment and networking/debug tooling—demonstrating practical kernel and porting expertise. Known for solving subtle compiler and type-cast issues, he combines production-grade delivery with deep platform debugging skills. Colleagues can expect a pragmatic systems thinker equally comfortable in firmware, OS internals and cross-platform integration.
8 years of coding experience
11 years of employment as a software developer
I LO JasłoEngineer, Computer Science, Engineer, Computer Science at Państwowa Wyższa Szkoła Zawodowa w Krośnie
Polish, English, Korean
Stackoverflow
11reputation
5kreached
1answer
0questions
Github Skills (9)
arm10
c-language10
cprogramming-language10
haiku10
operating-system10
bootloader9
debug8
debugging8
assembly6
Programming languages (5)
Github contributions (5)
haiku/haiku
Mar 2018 - Sep 2019
The Haiku operating system. (Pull requests will be ignored; patches may be sent to https://review.haiku-os.org).
Role in this project:
Back-end Developer
Back-end DeveloperContributions:46 commits in 1 year 6 months
Contributions summary:Jarosław primarily focused on low-level system modifications and porting tasks within the Haiku operating system. They worked on aligning memory structures in the bootloader, adding initial kernel headers for ARM64 architecture, and fixing various issues related to type casts and compiler errors across multiple components. The user also made changes to the networking stack, and debugging tools, indicating familiarity with the core system architecture. These changes show a strong focus on improving the system's stability and functionality, especially for the ARM64 architecture.
kernelhaiku-osoperating-systemhaikulinux
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