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Systems Engineer, DNS

Cloudflare· Engineering
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Hybrid (Austin, TX)full-timePosted 1w ago

About the role

Systems Engineer on the DNS team at Cloudflare. You will own medium-to-large projects, mentor junior engineers, and help improve the resilience and architecture of DNS systems while expanding our infrastructure and features for customers.

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.

Qualifications

  • BA/BS in Computer Science or a 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.

Skills

Required:Programming in Rust or GoSystems programming fundamentalsAbility to drive projects to completionOn-call and production ownership
Last updated Oct 14, 2026. Interested? Apply on the company site.

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