Linux Performance Developer
- People Tech
- 7 - 12 years
- Hyderabad
- 3 days ago
- Email to a friend
- Report this job
Job Description
Linux Performance Developer
Key Responsibilities:
- System Performance Analysis
- Analyze system-level performance on Linux platforms across CPU, memory, disk I/O, and network.
- Use performance monitoring tools (e.g., perf, ftrace, oprofile, bpftrace, systemtap, vmstat, iotop, top, htop, sar, latencytop) to identify bottlenecks.
- Profile applications and system services to pinpoint inefficiencies.
- Benchmarking and Optimization
- Design, implement, and run synthetic and real-world benchmarks (e.g., Phoronix, stress-ng, lmbench, fio).
- Optimize kernel subsystems (scheduler, memory management, file systems, network stack) and user-space components.
- Tune performance parameters (sysctl, cgroups, kernel boot args, IRQ affinity, NUMA policies).
- Performance Regression Detection
- Integrate performance testing into CI pipelines.
- Use tools like kselftest, LTP, BPF, and flamegraphs to detect regressions and improve stability under load.
- Collaboration with Kernel and User-Space Teams
- Work closely with kernel developers to suggest enhancements or fix issues in upstream drivers, kernel modules, or subsystems.
- Collaborate with application teams to guide performance improvements or align workloads with system capabilities.
- Tool Development
- Build custom performance profiling or tracing tools using eBPF, Python, C/C++, or shell scripting.
- Maintain dashboards and telemetry infrastructure (Grafana/Prometheus/InfluxDB/etc.).
- Power and Thermal Optimization (in mobile/embedded use cases)
- Analyze and reduce CPU wakeups, idle power usage, and dynamic frequency scaling behavior (cpufreq, cpuidle, thermal governor tuning).
Required Expertise:
- Strong Linux Internals Knowledge
- Deep understanding of kernel subsystems (scheduler, memory, CPU topology, virtual memory, etc.).
- Good grasp of system calls, IPC, and process life cycle.
- Proficiency in Tools
- perf, ftrace, bpftrace, strace, valgrind, gprof, flamegraph, systemtap, numactl.
- Languages
- C (for kernel modules or low-level profiling), Python or Go (for automation), Shell scripting (for tooling and monitoring setup).
- Experience with Virtualization/Containers
- Performance tuning for KVM, Xen, Docker, LXC, and Kubernetes environments.
- Understanding of cgroups, namespaces, and resource quotas.
- Experience in SoC/Embedded Devices
- ARM performance counters, PMU tuning, kernel power governors, and device-specific optimizations.
- Monitoring and Metrics
Familiar with telemetry stacks (Grafana, Prometheus, Telegraf), exporting and interpreting metrics.
Job Classification
Industry: IT Services & ConsultingFunctional Area / Department: Engineering - Software & QARole Category: Software DevelopmentRole: Software Development - OtherEmployement Type: Full timeContact Details:
Company: People TechLocation(s): Hyderabad+ View Contact
Keyskills: Performance Regression Detection Power and Thermal Optimization System Performance Analysis Benchmarking and Optimization Tool Development Collaboration with Kernel and User-Space Teams Proficiency in Tools Strong Linux Internals Knowledge SOC Python
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