# Senior Software Engineer, R2 Gateway

**Company:** [Cloudflare](https://hotfix.jobs/companies/cloudflare)
**Location:** Austin, TX, London, United Kingdom
**Role:** Backend Engineering
**Experience:** 5+ years
**Skills:** Rust, TypeScript, Go, Kubernetes, Cloudflare Workers, Distributed Systems, Object Storage, Http Apis, Api Gateways, Authentication, Rate Limiting, Observability, S3 Api, Durable Objects
**Posted:** 2026-09-02

> Build and operate Cloudflare R2’s S3-compatible API gateway, owning authentication, routing, rate limiting, reliability, and production operations at global scale. The role requires senior-level distributed-systems experience and strong Rust, TypeScript, Go, or comparable programming skills.

## Job Description

## Responsibilities
- Design, implement, and operate the S3-compatible API gateway serving R2 operations, ensuring correctness, low latency, and S3 API compatibility.
- Build and operate production services on Cloudflare Workers and Kubernetes handling high-throughput request traffic with strong availability and durability guarantees.
- Own the request path end to end, including authentication, authorization, routing, rate limiting, error handling, and interfaces with storage and metadata layers.
- Lead projects from design documentation through implementation, testing, deployment, and production monitoring.
- Improve gateway reliability, performance, and observability; ramp into unfamiliar or legacy code and reduce operational toil.
- Participate in on-call rotations, resolve incidents, and write postmortems.
- Use AI tools extensively for development, debugging, and operational work.
- Collaborate with storage infrastructure, metadata, networking, and platform teams on API contracts, capacity planning, and cross-functional initiatives.

## Requirements
- Strong programming skills in Rust, TypeScript, Go, or similar languages.
- Experience building or operating large-scale distributed systems on the request path with demanding latency and reliability requirements.
- Familiarity with object storage, HTTP/API gateways, edge computing, or service-oriented architectures.
- Experience designing and operating high-throughput APIs, including authentication, routing, rate limiting, and backward-compatible API evolution.
- Understanding of monitoring, alerting, performance tuning, and incident response.
- Strong written and verbal communication skills, with the ability to explain technical decisions and coordinate across teams.
- Comfort using AI coding tools in daily development workflows.

## Nice-to-haves
- Experience with the S3 API surface.
- Experience with Cloudflare Workers, Durable Objects, or edge computing platforms.

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