Senior Software Engineer, R2 Gateway

Requirements

• Strong programming skills in Rust, TypeScript, Go, or similar languages.
• 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.

Nice to haves

• Experience with the S3 API surface, or with Cloudflare Workers, Durable Objects, or edge computing platforms, is a strong plus.

What You'll Be Doing

• 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. We expect engineers to leverage AI as a core part of their workflow.
• Collaborate across teams (storage infrastructure, metadata, networking, other platform teams) to coordinate API contracts, capacity planning, and cross-cutting initiatives.

Perks and Benefits

• Opportunity to be part of a company with a mission to protect the free and open Internet.