Software Engineer, R2 Gateway — Hybrid (Rust/Go/TS)

CloudFlare; San Francisco (CA); Hybrid; USD 140,000 - 180,000; Full time

Job summary

Cloudflare is seeking a Software Engineer for the R2 Gateway team in a hybrid role based in Austin, TX or London, UK. You will design and operate the S3-compatible API gateway that powers R2, ensuring low latency and compatibility, while working with Cloudflare Workers, Kubernetes, and edge computing technologies.

You will own end-to-end authentication, routing, and observability, collaborating across teams to improve reliability and performance.

Qualifications

• Strong programming skills in Rust, TypeScript, Go, or similar languages.
• 3-4 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.

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. 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.

Skills

Rust

TypeScript

Go

Distributed systems

Tools

Cloudflare Workers

Kubernetes

Job description

Cloudflare is seeking a Software Engineer for the R2 Gateway team in a hybrid role based in Austin, TX or London, UK. You will design and operate the S3-compatible API gateway that powers R2, ensuring low latency and compatibility, while working with Cloudflare Workers, Kubernetes, and edge computing technologies.

You will own end-to-end authentication, routing, and observability, collaborating across teams to improve reliability and performance.