Linux Performance Developer - Kernel

Responsibilities :

• Analyze, measure, and optimize system performance across the full Linux stackkernel, drivers, user-space services, and applications.
• Profile CPU, memory, I / O, GPU, and power usage to identify performance bottlenecks and inefficiencies.
• Develop and deploy performance monitoring and tracing tools (e.g., perf, ftrace, eBPF, systemtap, trace-cmd, BPFtrace).
• Work closely with kernel, power, graphics, boot, and user-space teams to tune and enhance system responsiveness and throughput.
• Optimize boot time, application launch latency, and system suspend / resume cycles for better end-user experience.
• Tune scheduler, interrupt handling, memory management, and I / O subsystems for target hardware platforms.
• Validate performance under various workloads (interactive, background, thermal stress) and ensure consistent behavior.
• Collaborate with hardware and firmware teams to align software performance with platform power and thermal constraints.
• Automate performance regression testing and define KPIs to track across software releases.
• Investigate and resolve thermal throttling, CPU / GPU frequency scaling, and battery drain issues in coordination with power and thermal Qualifications :
• Bachelors or Masters degree in Computer Science, Electrical Engineering, or a related field.
• 5+ years of experience in Linux performance analysis and tuning on embedded or consumer platforms.
• Deep knowledge of Linux internals : process scheduling, memory management, NUMA, file systems, block devices, I / O stack, etc.
• Strong proficiency with performance tools : perf, top, htop, vmstat, iotop, powertop, ftrace, strace, systemtap, LTTng, eBPF, systemd-analyze, bootchart, blktrace, oprofile
• Experience with power-performance tuning frameworks such as CPUFreq, devfreq, cpuidle, and thermal frameworks.
• Familiar with kernel tuning interfaces : / proc, / sys, cgroups, udev, sysctl.
• Skilled in C, Python, and shell scripting for automation and data processing.
• Experience in benchmarking tools and workloads : Phoronix Test Suite, stress-ng, sysbench, fio, glmark2, etc.
• Familiarity with hardware power domains, DVFS, thermal zones, and SoC power / thermal models is a plus.
• Experience with Yocto, Debian, or Ubuntu-based OS stacks and optimizing them for consumer-grade hardware (Intel / AMD / ARM).

(ref : hirist.tech)