Senior Edge & Cache Systems Engineer

CloudFlare; San Francisco (CA); Hybrid; USD 168,000 - 254,000; Full time

Job summary

Cloudflare seeks an experienced engineer to design, build, and operate the high‑performance cache and proxy data plane at the edge. You will contribute to Pingora and production services, improving I/O, memory efficiency, and latency across a globally distributed network.

You will own features end to end, write designs, implement services, add tests, and drive staged rollouts while maintaining strong reliability and observability.

Qualifications

• Minimum 4 years of professional experience designing, building, and operating production software systems.
• Proficiency in Rust, Go, C, or C++, with a willingness to work in Rust.
• Strong understanding of HTTP semantics and transport protocols (TCP, TLS, QUIC).
• Experience designing and implementing secure, resilient, high‑performance distributed systems.
• Experience with Linux systems, networking, concurrency, and performance analysis.
• Track record of production ownership, including monitoring, debugging, on‑call, incident response, and reliability improvements.
• Experience using metrics, logs, traces, profiling, and experiments to understand production behavior.
• Strong written and verbal communication skills and the ability to write clear technical designs and lead projects across team boundaries.
• Willingness to use AI‑assisted engineering tools to accelerate development and investigation while ensuring correctness, security, and design quality.

Responsibilities

• Design, build, and operate the high‑performance cache and proxy data plane that serves content at Cloudflare's edge and connects to customer origins
• Contribute to Pingora and the production services built on it, improving asynchronous I/O, connection handling, memory and disk efficiency, and tail latency
• Improve cache correctness and performance through object placement, retention and eviction policies, range‑request handling, and resilience to corrupt data
• Build globally distributed purge and Tiered Cache systems that invalidate content quickly, select efficient cache paths, improve hit rates, and reduce origin load
• Deliver shared platform capabilities and customer‑facing APIs and rules for cache keys, TTLs, response handling, purge behavior, and programmatic access from Workers
• Own features end to end: write technical designs, implement services and libraries, add automated tests and observability, drive staged rollouts, and operate the resulting systems in production
• Participate in the team's on‑call rotation, lead incident response and post‑mortems, and continually improve reliability, capacity, and operational tooling
• Reason carefully about failure modes and blast radius, using traffic cohorts, guardrails, and rollback mechanisms to introduce high‑impact changes safely
• Partner with product and engineering teams across Cloudflare that depend on or extend the cache and proxy platform
• Raise the engineering bar through code review, mentorship, clear written communication, and improvements to team standards and tooling

Skills

Rust

Go

C/C++

HTTP

Distributed systems

Linux

Networking

Concurrency

On-call

Metrics

Communication

Tools

Pingora

Job description

Cloudflare seeks an experienced engineer to design, build, and operate the high‑performance cache and proxy data plane at the edge. You will contribute to Pingora and production services, improving I/O, memory efficiency, and latency across a globally distributed network.

You will own features end to end, write designs, implement services, add tests, and drive staged rollouts while maintaining strong reliability and observability.