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Senior Software Engineer, R2 Gateway

Cloudflare· Emerging Technology and Incubation
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Hybrid (Austin, TX; London, UK), Hybrid (Austin, TX or London, UK)full-timePosted 1mo ago

About the role

Senior role designing, implementing, and operating the S3-compatible API gateway for Cloudflare's R2 object storage, focusing on low-latency, highly available request-path systems at global scale with AI-assisted development.

Responsibilities

  • Design, implement, and operate the S3-compatible API gateway that serves every R2 operation, ensuring correctness, low latency, and compatibility with the S3 API surface.
  • Build and operate production services on Cloudflare Workers and Kubernetes that handle high-throughput request traffic with strong availability and durability guarantees.
  • Own the request path end to end — authentication, authorization, routing, rate limiting, and error handling — and the interfaces between the gateway and R2's storage and metadata layers.
  • Own projects end to end: from design docs through implementation, testing, deployment, and production monitoring.
  • Continuously improve the reliability, performance, and observability of the gateway; ramp quickly into unfamiliar and legacy code paths and reduce operational toil.
  • Participate in on-call rotations, drive incident resolution, and write postmortems that raise reliability standards.
  • Use AI tools extensively to accelerate development, debugging, and operational tasks. Leverage AI as a core part of workflow.
  • Collaborate across teams (storage infrastructure, metadata, networking, other platform teams) to coordinate API contracts, capacity planning, and cross-cutting initiatives.

Qualifications

  • Strong programming skills in Rust, TypeScript, Go, or similar languages.
  • 5+ years of experience building or operating large-scale distributed systems on the request path, with strong latency and reliability requirements.
  • Familiarity with cloud infrastructure concepts such as object storage, HTTP/API gateways, edge computing, or service-oriented architectures.
  • Experience designing and operating high-throughput APIs — authentication, routing, rate limiting, and backward-compatible API evolution.
  • Understanding of reliability and observability practices: monitoring, alerting, performance tuning, and incident response.
  • Strong written and verbal communication skills; ability to explain technical decisions clearly and coordinate across teams.
  • Comfortable working with AI coding tools as part of a daily development workflow.
  • Experience with the S3 API surface, or with Cloudflare Workers, Durable Objects, or edge computing platforms, is a strong plus.

Skills

Required:RustTypeScript
Nice to have:GoS3 API

Benefits

  • Not specified in the description.
Last updated Sep 16, 2026. Interested? Apply on the company site.

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