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engineering

Posted 3 hours ago

Senior Software Engineer, Durable Objects (DO)

at LazyApply

On-site

Responsibilities

  • Build and improve the Durable Objects runtime.
  • Design and develop the low-level routing and storage systems that power customer applications.
  • Improve reliability, scalability, performance, and feature depth.
  • Own code end-to-end from design through production.
  • Solve complex problems in production distributed systems.

Requirements

  • As a result, they see significant improvement in performance and a decrease in spam and other attacks.
  • 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 you’re 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, you’ll fit right in.
  • You’ll help evolve the runtime and the low-level routing and storage systems that support real-time chat, multiplayer games, AI agents, and other stateful workloads at scale. Responsibilities
  • Work across JavaScript, TypeScript, Rust, and C++.
  • Deep expertise in at least one systems programming language such as C/C++ or Rust. •
  • Experience designing and architecting large-scale distributed systems.
  • Familiarity with cloud platforms, especially serverless architectures. •
  • Experience working on database internals, especially SQLite.
  • Deep understanding of web technologies such as browsers, HTTP, JavaScript, and WebAssembly.
  • Experience debugging, optimizing, and identifying failure modes in large-scale Linux-based distributed systems.
  • Fundamental to our mission to help build a better Internet is protecting the free and open Internet.
  • 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.

Experience

  • Help drive the continued evolution of the system. Desirable Skills, Knowledge & Experience 5+ years of

Benefits

  • Experience as a technical leader or team lead, driving engineering decisions. Bonus Points •
  • All qualified applicants will be considered for employment without regard to their, or any other person's, 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.

Contact

  • Examples of reasonable accommodations include, but are not limited to, changing the application process, providing documents in an alternate format, using a sign language interpreter, or using specialized equipment. If you require a reasonable accommodation to apply for a job, please contact us via e-mail at hr@cloudflare.com or via mail at 101 Townsend St. San Francisco, CA 94107.

Additional details

  • At Cloudflare, we are on a mission to help build a better Internet.
  • Today the company runs one of the world’s 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.
  • Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company.
  • At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with.
  • Cloudflare’s Emerging Technologies & Incubation team builds and launches bold new products on Cloudflare’s edge network.
  • This role is on the Durable Objects team, which powers stateful serverless applications for Cloudflare customers.
  • Strong foundation in data structures, algorithms, and system design.
  • Background in low-latency, real-time environments such as game streaming, high-frequency trading, or payment systems. •

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