Senior Software Engineer, R2 Gateway

At Cloudflare we are on a mission to help build a better Internet. Today the company runs one of the worlds largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware installing software or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network which gets smarter with every request. As a result they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazines Top Company Cultures list and ranked among the Worlds Most Innovative Companies by Fast Company.

At Cloudflare were not looking for people who wait for a polished roadmap; were looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a normalized problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration leveraging AI to ship faster today to make it better tomorrow while ensuring that every improvement no matter how small is shared across the team to lift everyone up. If youre the type of person who values curiosity over bureaucracy and that AI is a partner in solving tough problems to keep the Internet moving forward youll fit right in.

R2 is Cloudflares object storage platform offering developers durable reliable storage with zero egress fees that integrates seamlessly with Cloudflares global network and Developer Platform. The R2 Gateway team owns the request-facing layer of R2 the S3-compatible API gateway that every object put get list and delete flows through. When a customer or application talks to R2 they talk to the systems we build and operate.

R2 is growing rapidly and the gateway must evolve to keep pace. The team is responsible for the API surface that handles authentication request routing rate limiting and coordination between clients and R2s storage and metadata layers all while maintaining strict compatibility with the S3 API and delivering low-latency highly available access at global scale.

Youll be joining a team that operates at the intersection of large-scale distributed systems storage infrastructure and edge computing building request-path systems that need to be correct fast and reliable on every single call.

• 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 R2s 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.

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

Were not just a highly ambitious large-scale technology company. Were a highly ambitious large-scale technology company with a soul. Fundamental to our mission to help build a better Internet is protecting the free and open Internet.

Project Galileo: Since 2014 weve equipped more than 2400 journalism and civil society organizations in 111 countries with powerful tools to defend themselves against attacks that would otherwise censor their work technology already used by Cloudflares enterprise customers--at no cost.

Athenian Project: In 2017 we created the Athenian Project to ensure that state and local governments have the highest level of protection and reliability for free so that their constituents have access to election information and voter registration. Since the project weve provided services to more than 425 local government election websites in 33 states.

1.1.1.1: We released 1.1.1.1 to help fix the foundation of the Internet by building a faster more secure and privacy-centric public DNS resolver. This is available publicly for everyone to use - it is the first consumer-focused service Cloudflare has ever released. Heres the deal - we dont store client IP addresses never ever. We will continue to abide by our privacy commitment and ensure that no user data is sold to advertisers or used to target consumers.

Sound like something youd like to be a part of Wed love to hear from you!

Please note that applicants who progress to the offer stage of the interview process may be asked to attend an in-person interview within one of the Cloudflare Offices or Cloudflare Hubs. More details about this will be available at that stage of the interview process.

This position may require access to information protected under U.S. export control laws including the U.S. Export Administration Regulations. Please note that any offer of employment may be conditioned on your authorization to receive software or technology controlled under these U.S. export laws without sponsorship for an export license.

Cloudflare is proud to be an equal opportunity employer. We are committed to providing equal employment opportunity for all people and place great value in both diversity and inclusiveness. All qualified applicants will be considered for employment without regard to their or any other persons perceived or actual race color religion sex gender gender identity gender expression sexual orientation national origin ancestry citizenship age physical or mental disability medical condition family care status or any other basis protected by law. We are an AA/Veterans/Disabled Employer.

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