Performance Engineer: Kernel & Memory at Scale

CloudFlare; San Francisco (CA); On-site; USD 180,000 - 240,000; Full time

Job summary

Cloudflare is seeking a Performance Engineer specializing in the Linux kernel memory subsystem. You will diagnose bottlenecks, implement optimizations, and push changes upstream while collaborating with cross-functional teams.

The role focuses on memory management at a large scale to improve performance and cost efficiency. We value contributions to the Linux kernel, strong C programming, and the ability to drive instrumentation (tracepoints, BPF, perf) in production environments.

Qualifications

• Deep expertise in the Linux kernel memory-management subsystem: page allocator, virtual memory, reclaim, and locking.

Responsibilities

• Diagnose and fix performance and scalability bottlenecks in the Linux kernel memory-management subsystem.
• Land your work upstream; maintainership and review work that earns standing in the community.

Skills

Linux kernel memory-management

C systems programming

Upstream Linux contribution

Instrumentation & tracing

Cross-team communication

Tools

BPF

Perf

Tracepoints

Job description

Cloudflare is seeking a Performance Engineer specializing in the Linux kernel memory subsystem. You will diagnose bottlenecks, implement optimizations, and push changes upstream while collaborating with cross-functional teams.

The role focuses on memory management at a large scale to improve performance and cost efficiency. We value contributions to the Linux kernel, strong C programming, and the ability to drive instrumentation (tracepoints, BPF, perf) in production environments.