Cloudflare

Senior Software Engineer, Durable Objects (DO)

Cloudflare · In-Office

Posted about 2 months ago

or apply directly on Cloudflare's site. We never take the application ourselves.

Is this posting real?

This role has been open
66 days
Cloudflare's roles stay open a median of 66 days
Reposted
No
Salary listed
No
28% of Cloudflare's roles list one
Ghost-job risk at Cloudflare
high
252 stale, 12 reposted of 342 open
Hiring momentum
494 roles opened in the last 90 days
↑ up vs. the prior 90 days
Last confirmed on the employer's board
2026-10-08

Measured from postings appearing on and disappearing from Cloudflare's own greenhouse board since 2026-08-03. Full hiring picture for Cloudflare.

About this role

As a Senior Software Engineer on the Durable Objects team at Cloudflare, you will be responsible for building and enhancing the Durable Objects runtime and developing the underlying routing and storage systems for stateful serverless applications. Your role will involve improving system reliability, scalability, and performance while owning the code from design to production. You will work with technologies including JavaScript, TypeScript, Rust, and C++, and tackle complex challenges in production distributed systems.

Our read on this posting2.0out of 5
benefits
1/5
freshness
1/5
career value
4/5
role clarity
4/5
pay transparency
0/5

Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of Cloudflare as an employer.

What you need

  • 5+ years of experience writing systems software
  • Operational mindset with experience owning code in production
  • Strong foundation in data structures, algorithms, and system design
  • 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

Nice to have

  • Experience as a technical leader or team lead, driving engineering decisions
  • Experience working on database internals, especially SQLite
  • Deep understanding of web technologies such as browsers, HTTP, JavaScript, and WebAssembly
  • Background in low-latency, real-time environments such as game streaming, high-frequency trading, or payment systems
  • Experience debugging, optimizing, and identifying failure modes in large-scale Linux-based distributed systems

Worth weighing

  • In-office position
  • No salary information provided
  • Role involves working with a range of programming languages and technologies, which may require continuous learning
  • Position may require access to information protected under U.S. export control laws

Summarised from Cloudflare's posting. Read the full original.

Listed by Cloudflare on their greenhouse job board, last confirmed open on 2026-10-08. PitchMeAI is not the employer.

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