Kacper Słomiński
Frontend Web Developer at PKN ORLEN S.A.
Biała Woda, Podlaskie, Poland
Summary
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Rockstar🎓
Top SchoolKacper Słomiński is a Frontend Web Developer with eight years of professional experience, currently building user-facing applications at PKN ORLEN after a long tenure at BaByliss. While focused on frontend work, he brings deep low-level systems expertise from substantial open-source contributions—porting a bootloader to AArch64, implementing drivers and accelerated cursors in a microkernel OS, and adding syscalls and threading support to a portable C library. This blend of UI engineering and systems programming gives him a rare ability to bridge browser-facing features with performance-sensitive backend or embedded concerns. Based in Poland, he holds a bachelor’s in Electrical, Electronic and Communications Engineering and often surfaces non-obvious system-level fixes that improve app reliability and integration.
8 years of coding experience
9 years of employment as a software developer
Bachelor's degree, Electrical, Electronic and Communications Engineering Technology/Technician, Bachelor's degree, Electrical, Electronic and Communications Engineering Technology/Technician at Politechnika Szczecińska
Github Skills (27)
bootloader10
c-language10
linux10
graphics-engine10
os-development10
c1110
graphic10
c1710
kernel10
system-calls10
device-driver10
driver10
kernel-mode10
elf10
cprogramming-language10
Programming languages (15)
Github contributions (5)
managarm/managarm
May 2019 - Jan 2023
Pragmatic microkernel-based OS with fully asynchronous I/O
Role in this project:
Back-end Developer
Back-end DeveloperContributions:236 reviews, 445 commits, 99 PRs in 3 years 8 months
Contributions summary:Kacper implemented a driver for the VMware graphics adapter, adding support for accelerated cursors within the microkernel-based operating system. This included writing main driver source code, setting up a device, and integrating with the DRM core to expose the graphics card's capabilities. The user made changes to the core DRM code to implement support for accelerated cursors in general. Additionally, the user reworked or implemented parts related to a virtual machine with memory and I/O, along with other miscellaneous fixes.
microkernelkernelasynchronousoperating-systemlinux
managarm/mlibc
May 2019 - Oct 2022
Portable C standard library
Role in this project:Back-end Developer
Back-end DeveloperContributions:163 reviews, 137 commits, 72 PRs in 3 years 5 months
Contributions summary:Kacper primarily contributed to the implementation of system calls and standard library functions within the mlibc project. Their work included adding support for new ioctls, implementing eventfd functionality, and adding functionality for thread creation. Furthermore, the user has been involved in converting the managarm-based system calls from protobuf to bragi.
cppc-librarystandard-libraryportablex86-64
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