Senior Software Engineer - Workers Runtime (Rust/C++)

Cloudflare; Greater London; On-site; GBP 110,000 - 180,000; Full time

Benefits offered by this job

Medical Insurance

Vision Insurance

401(k) Retirement Plan

Equity Plan

Flexible PTO

Job summary

Cloudflare is hiring a Senior Software Engineer for the Workers Runtime in our London, UK offices. You will build features, improve performance, and own production code in a large-scale distributed system using C++ or Rust.

Candidates should have strong CS fundamentals and hands-on experience with Linux-based distributed environments. We value curiosity and practical problem-solving, and you’ll join a culture that emphasizes iterative development, collaboration, and connecting the latest AI

Qualifications

• 2+ years of recent professional experience with C++ or Rust.
• Strong computer science fundamentals, including data structures, algorithms, and software design.
• Operational mindset and experience owning production systems.
• Experience debugging and optimizing large-scale Linux-based distributed systems.

Responsibilities

• Build features and improvements for the Workers Runtime.
• Improve runtime performance, reliability, and scale.
• Help shape features based on what is technically possible.
• Own code in production and debug issues in a large-scale distributed system.
• Work in a fast-paced, iterative environment that balances product goals with technical execution.

Skills

C++

Rust

Distributed systems

Linux

CS fundamentals

Tools

Wasmtime

Wasmer

Lucet

Job description

Cloudflare is hiring a Senior Software Engineer for the Workers Runtime in our London, UK offices. You will build features, improve performance, and own production code in a large-scale distributed system using C++ or Rust.

Candidates should have strong CS fundamentals and hands-on experience with Linux-based distributed environments. We value curiosity and practical problem-solving, and you’ll join a culture that emphasizes iterative development, collaboration, and connecting the latest AI