Linux Performance Engineer

On behalf of our client, we are looking for a Linux Performance Engineer.

Responsibilities:

- Optimize system performance across hardware, OS, and network stack (CPU, BIOS/UEFI, NUMA, NICs)

- Tune Linux kernels for low-latency performance (CPU isolation, scheduling, tickless kernel)

- Improve network efficiency using low-latency technologies (TCP/UDP, RDMA, DPDK, kernel bypass)

- Build microbenchmarks and measure system latency

- Identify and resolve bottlenecks across CPU, memory, cache, and scheduling

- Collaborate with engineering teams to improve system performance

- Work with hardware vendors to enhance system efficiency

Requirements:

- 5+ years of experience in Linux performance engineering or low-latency systems

- 5+ years of experience with C/C++ for system-level optimization

- 2+ years of experience with Linux kernel & system performance tuning

- 1+ year of experience with low-latency networking (DPDK / RDMA / kernel bypass) 

- Deep understanding of Linux internals and kernel tuning

- Strong knowledge of CPU architecture (NUMA, cache, SIMD)

-Experience with performance profiling tools (perf, flamegraphs, PMU tools)

- Programming/scripting skills (Python or similar)

Nice to Have:

- Experience with compiler optimizations (GCC/Clang, LTO, PGO)

- Ability to build and optimize Linux systems from source

- Experience with reproducible builds (Yocto, Buildroot)

- Understanding of CI/CD pipelines for system deployment

- Knowledge of ABI compatibility and runtime optimization

- Experience with high-performance or real-time systems

- Background in optimizing runtimes or system libraries

- Exposure to highly optimized Linux distributions

Company offers:

- Long-term employment with possibilities for professional growth

- Fully remote work

- Reasonably flexible schedule

- 15 days of paid vacation

- Regular performance reviews