Systems Engineer, Network Protocols & Distributed Systems

At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Intern...

At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a "normalized" problem and the AI-native curiosity to create a solution ...

Location: London, Lisbon, or Austin - (Hybrid)

Build and operate systems that terminate HTTP and TLS at Internet scale
Migrate core infrastructure from NGINX to a next-gen Rust-based proxy
Measure and improve protocol performance across real-world traffic
Contribute to open source and industry standards
Learn from and work alongside some of the leading engineers in this space
Have solid systems programming experience (Rust, C, or similar)
Thrive in complex technical domains and enjoy learning new things
Care about building reliable, secure, and performant software
Are motivated by impact — technical, operational, and on the Internet itself
Come from a background that’s underrepresented in tech — we value diverse perspectives
Perks include:
Flexible work hours • Take-what-you-need vacation • RSUs • ESPP • Meaningful technical challenges every day