Senior Edge Systems Engineer, Cache & Proxy

Cloudflare; New York (NY); On-site; USD 185,000 - 254,000; Full time

Job summary

Cloudflare in the United States is seeking 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 asynchronous I/O, latency, and cache efficiency while collaborating across teams on scalable solutions.

The role emphasizes ownership across design, implementation, testing, and production operations, with on-call responsibilities and a focus on reliability, observability,

Qualifications

• 4+ years designing, building, and operating production software systems.
• Proficiency in Rust, Go, C, or C++, with a willingness to work in Rust.
• Understanding of HTTP semantics and transport protocols (TCP/TLS/QUIC).
• Experience designing secure, resilient distributed systems.
• Experience with Linux systems, networking, concurrency, and performance analysis.
• Production ownership: monitoring, debugging, on-call, incident response.
• Using metrics, logs, traces to understand production behavior.
• Clear written and verbal communication; cross-team collaboration.
• Willingness to use AI-assisted engineering tools for development.

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, admission and eviction policies, range-request handling, and resilience to corrupt or incomplete 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, measurable 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/QUIC

Distributed systems

Linux networking

On-call ownership

Monitoring/logging

Team communication

Tools

Kubernetes

Kafka

PostgreSQL

ClickHouse

Open source

Job description

Cloudflare in the United States is seeking 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 asynchronous I/O, latency, and cache efficiency while collaborating across teams on scalable solutions.

The role emphasizes ownership across design, implementation, testing, and production operations, with on-call responsibilities and a focus on reliability, observability,