[高通]招聘高级专家工程师 Linux Performance 岗位欢迎投递

[fuzhuo233]

JD https://careers.qualcomm.com/careers?query=linux+performance&start=0&pid=446717375547&sort_by=relevance

简历内推可发送至: [e-mail]

年假多 WLB Linux 性能优化方向，上海、北京、成都均有 office

Job Area:

Engineering Group, Engineering Group > Software Engineering

General Summary:

Responsible for Linux system performance analysis and optimization on upstream kernel based products on Qualcomm platforms. You will identify performance bottlenecks, drive root-cause analysis, develop fixes/improvements, and prevent regressions through benchmarking and automation. Focus areas include CPU scheduling, memory management, I/O subsystem, boot performance, and low-level HW performance characteristics (PMU, cache, DDR).

1.   Analyze and optimize Linux upstream kernel performance across scheduler, memory, I/O, and boot-up sequence. 
   

2.   Identify system-level performance bottlenecks using profiling/tracing tools/bootchart; propose and implement improvements in kernel and/or userspace. 
   

3.   Conduct root-cause analysis for performance issues and regressions; provide clear analysis reports and corrective actions. 
   

4.   Build and maintain performance benchmarking methodology: KPI definition, test plans, automation, baseline tracking, and regression gating. 
   

5.   Optimize boot time: analyze boot critical path (kernel init, userspace init, systemd, services), reduce latency, and validate improvements. 
   

6.   Drive performance-related patch development and upstream-quality engineering (review, test, documentation). 
   

7.   Collaborate with cross-functional teams (platform, camera, graphics, multimedia, power, QA) to diagnose and resolve performance issues. 
   

Skills /Experience Required:

1.   Strong experience in Linux system performance analysis and optimization (kernel and/or system level). 
   

2.   Solid understanding of Linux upstream kernel internals, especially: 
   

3.   Scheduler (CFS/RT, task wakeup, CPU affinity, load balancing, latency) 
   

4.   Memory management (page cache, reclaim, compaction, CMA/contiguous memory concepts, memory pressure) 
   

5.   I/O subsystem (block layer, filesystems basics, I/O scheduling, latency/throughput tradeoffs) 
   

6.   Boot performance fundamentals (init sequence, kernel/userspace interactions) 
   

7.   Good understanding of low-level performance topics: PMU/perf events, CPU cache behavior, memory bandwidth/DDR. 
   

8.   Proficient programming skills in C (kernel/userspace) and scripting in Python/Shell for automation. 
   

9.   Hands-on experience with performance tools such as perf, ftrace, trace-cmd, eBPF/bpftrace, flame graphs, and standard benchmarking tools. 
   

10.  Strong problem-solving skills, ability to communicate findings clearly, and ability to work effectively across teams.
    

[simohayha]

一定要有 linux kernel 的开发经验吗？

[kissedbyfire]

哇偶，居然在成都有岗位