Cloudflare
Systems Engineer, DNS
Hybrid +1 · Full-time · Posted Oct 13, 2026
- Location
- Hybrid
Austin, TX, United States - Education
- BA/BS in Computer Science or a related field, or equivalent practical experience.
About the job
Build, maintain, and improve Cloudflare’s large-scale DNS infrastructure, taking projects from design through delivery and operations.
What you'll do
- Maintain and expand DNS infrastructure and implement customer features; write tested, maintainable code.
- Debug complex service issues and improve resilience through refactoring and architectural changes.
- Own project delivery, collaborate on product requirements, and mentor junior engineers.
What they ask for
- Strong systems programming fundamentals, including performance, concurrency, and networking.
- Ability to write production code in Rust or Go, or quickly learn a comparable language.
- Ability to drive projects to completion and scope work effectively.
- Bachelor’s degree in Computer Science or a related field, or equivalent practical experience.
Nice to have
- DNS experience; knowledge of DNSSEC and DNS security extensions.
- Familiarity with large-scale, high-performance services; HTTP, TLS, or CDN networks.
Tools
Rust, Go, DNSSEC, HTTP, TLS
Model-written summary · the original posting is authoritative