Jan Beulich
Software Engineering Consultant at SUSE
Dusseldorf, North Rhine-Westphalia, Germany
Summary
👤
Senior🎓
Top SchoolJan Beulich is a seasoned software engineering consultant with almost 20 years of experience focused on kernel-level development, virtualization and toolchain work, currently based in Düsseldorf. With an MS in Mathematics from Lomonosov MSU and 14 years of professional experience at SUSE, he’s tackled OS bring-up, Linux kernel internals and deep Xen hypervisor engineering. Jan contributes to high-profile open-source projects like the Xen Project and binutils-gdb, where he’s improved interrupt handling, memory management and x86 assembly code generation for real-world stability and performance gains. Known for low-level C and assembler expertise and forensic debugging skills, he combines pragmatic system architecture with careful refactoring to reduce complexity and build times. A less obvious strength is his long history of backline support and cross-platform bring-up work, which gives him a rare perspective bridging developer tooling, firmware (SeaBIOS) and production hypervisor reliability.
15 years of coding experience
Lomonosov Moscow State University
Github Skills (31)
assembly10
architecture10
avx10
memory-management10
build-system10
c1110
linux-kernel10
x8610
c1710
kernel10
system10
gdb10
code-generation10
binutils10
performance-optimization10
Programming languages (6)
Github contributions (5)
xen-project/xen
Jan 2017 - Jan 2023
Mirror of the Xen Repository (PRs not accepted see: http://wiki.xenproject.org/wiki/Submitting_Xen_Project_Patches)
Role in this project:
Back-end Developer & System Architect
Back-end Developer & System ArchitectContributions:824 commits in 6 years
Contributions summary:Jan primarily contributed to the Xen Project's core infrastructure by fixing bugs and refactoring code to improve system stability and performance. Their work included modifications to grant table operations, interrupt handling mechanisms within x86 architecture, and the memory management system. They also updated the default SeaBIOS version and performed code cleanup, demonstrating an understanding of the Xen Project's internal workings and software architecture.
xen
bminor/binutils-gdb
Dec 2022 - Jan 2023
Unofficial mirror of sourceware binutils-gdb repository. Updated daily.
Role in this project:Back-end Developer
Back-end DeveloperContributions:52 commits in 1 month
Contributions summary:Jan primarily focused on refactoring and optimizing the x86 assembly code generator within the binutils-gdb project. They re-worked the instruction/suffix recognition process, including handling move-with-sign-extend operations. Additionally, they improved the memory efficiency and build-time performance of the code generator. The user also addressed the related issues in the disassembler components.
binutilsgdb
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