DNS Systems Engineer: Scale & Reliability

Cloudflare; Austin (TX); On-site; USD 140,000 - 165,000; Full time

Job summary

Cloudflare is seeking a Systems Engineer on the DNS team in Austin to own medium-to-large projects from design to delivery. You will mentor junior engineers and help improve system architecture and resilience across our global DNS platforms.

The role emphasizes ownership beyond code, fast iteration, and collaboration with product teams. You will work on features for customers, write robust production code in Rust or Go where needed, and contribute to scalable, secure, and high-performance DNS

Qualifications

• BA/BS in Computer Science or related field, or equivalent practical experience.
• Strong systems programming fundamentals, including performance, concurrency, and networking.
• Ability to write production code in Rust or Go, or a track record of learning a comparable language quickly.
• A habit of measuring before optimizing and reasoning about failure modes.
• Willingness to own changes beyond the code: rollout, monitoring, on-call, and follow-up.
• DNS experience is welcome, not required.
• Ability to drive projects to completion and scope work effectively for yourself and other team members.

Responsibilities

• Maintain and expand our DNS infrastructure, implementing features for our customers.
• Write high-quality, maintainable, and well-tested code that simplifies and improves our systems
• Act as a subject matter expert for moderately complex systems, becoming a go-to person for questions about the projects you work on.
• Proactively identify issues affecting the team and propose effective solutions to improve our processes and technology.
• Collaborate with Product and other stakeholders to provide meaningful input on product requirement documents (PRDs).
• Serve as a mentor and onboarding guide for junior team members, helping them grow through thoughtful code and design reviews.
• Debug and resolve complex service issues with minimal assistance, improving system resilience through refactoring and re-architecting.

Skills

Systems programming

Performance

Concurrency

Networking

Rust

Go

Code quality

On-call

Education

BA/BS in Computer Science or related field

Job description

Cloudflare is seeking a Systems Engineer on the DNS team in Austin to own medium-to-large projects from design to delivery. You will mentor junior engineers and help improve system architecture and resilience across our global DNS platforms.

The role emphasizes ownership beyond code, fast iteration, and collaboration with product teams. You will work on features for customers, write robust production code in Rust or Go where needed, and contribute to scalable, secure, and high-performance DNS