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Mateusz Jończyk

PROFILE

Mateusz Jończyk

Worked on OpenWrt and Linux kernel repositories, delivering features and fixes for embedded systems and network devices. Addressed a regression in OpenWrt’s ramips/mt7621 target by disabling Energy Efficient Ethernet in the device tree, restoring stable connectivity. Refactored RTC timekeeping on MIPS platforms in geerlingguy/linux, removing dead code and unifying time retrieval through the RTC library. Improved OpenWrt package reliability by aligning bind-libs versions to prevent runtime errors. Added vendor web interface flash support for ASUS RT-AX53U, streamlining firmware installation. Demonstrated expertise in C, Makefile, device drivers, and package management, with a focus on maintainability and user experience.

Overall Statistics

Feature vs Bugs

71%Features

Repository Contributions

7Total
Bugs
2
Commits
7
Features
5
Lines of code
184
Activity Months4

Work History

March 2026

1 Commits • 1 Features

Mar 1, 2026

March 2026 – DragonBluep/openwrt: Delivered Vendor Web Interface Flash Support for ASUS RT-AX53U. Implemented a new build flow to generate an initramfs-factory.trx image that can be flashed via the vendor's WebGUI, followed by a standard upgrade using sysupgrade-squashfs.bin. Included vendor compatibility checks and clear user instructions. Documented kernel size constraints (TRX v2) and added conditional logic to the Build/asus-trx macro to avoid hard failures if input exceeds expectations. This work reduces user friction, accelerates adoption of OpenWrt on ASUS RT-AX53U, and lowers support overhead by enabling a streamlined, one-step flashing path.

February 2026

1 Commits

Feb 1, 2026

February 2026 monthly summary for openwrt/packages: Implemented version alignment between bind-libs and dependent packages to prevent runtime errors in dig by ensuring consistent versions via DEPENDS and EXTRA_DEPENDS; expanded alignment to related bind packages; validated on OpenWrt snapshot x86_64; this reduces upgrade fragility and improves stability of the package ecosystem, delivering measurable business value by preventing runtime outages and simplifying maintenance.

July 2025

4 Commits • 4 Features

Jul 1, 2025

July 2025 monthly summary focusing on RTC timekeeping cleanup and library-based retrieval on MIPS platforms. Reduced header clutter, removed dead code, inline macro logic, and unified time retrieval via RTC library with CONFIG_RTC_MC146818_LIB.

April 2025

1 Commits

Apr 1, 2025

April 2025 monthly summary: - Key features delivered: OpenWrt ramips/mt7621 EEE regression fix — disabled Energy Efficient Ethernet in the device tree for affected devices to prevent periodic Ethernet link drops and restore stable connectivity. Commit: b7fa9d92aef86453c28875b50ae27fbab3b500a4. - Major bugs fixed: Resolved regression introduced in OpenWrt 24.10 affecting ramips/mt7621 by ensuring EEE is treated as broken in the devicetree, preventing unstable network behavior. - Overall impact and accomplishments: Restored reliable network operation for affected hardware, reducing support overhead and improving customer experience. Demonstrates targeted debugging and patch delivery in a release-critical path. - Technologies/skills demonstrated: OpenWrt device-tree modifications, ramips/mt7621 target, patch-oriented development, commit hygiene and change validation.

Activity

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Quality Metrics

Correctness97.2%
Maintainability94.2%
Architecture91.4%
Performance94.2%
AI Usage20.0%

Skills & Technologies

Programming Languages

CMakefile

Technical Skills

Code RefactoringDevice DriversDevice TreeEmbedded SystemsKernel DevelopmentLinuxLinux system administrationNetwork Engineeringembedded systemsfirmware developmentpackage management

Repositories Contributed To

3 repos

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

geerlingguy/linux

Jul 2025 Jul 2025
1 Month active

Languages Used

C

Technical Skills

Code RefactoringDevice DriversEmbedded SystemsKernel Development

DragonBluep/openwrt

Apr 2025 Mar 2026
2 Months active

Languages Used

CMakefile

Technical Skills

Device TreeEmbedded SystemsNetwork EngineeringLinuxembedded systemsfirmware development

openwrt/packages

Feb 2026 Feb 2026
1 Month active

Languages Used

Makefile

Technical Skills

Linux system administrationpackage management