Senior Software Engineer, Workers Runtime

Cloudflare • Austin, TX

1d • Onsite

About The Position

Cloudflare’s Emerging Technologies & Incubation team builds new products at the edge by combining Cloudflare’s network scale with rapid product incubation. This role is on the Workers Runtime team, which ships the runtime that executes customer code at the edge. You’ll improve performance, expand JavaScript and WebAssembly support, and help the runtime scale safely and efficiently.

Requirements

• 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.
• Deep understanding of the web, including HTTP, JavaScript, and WebAssembly.
• Experience debugging and optimizing large-scale Linux-based distributed systems.

Nice To Haves

• Experience building high-performance distributed systems in Rust.
• Experience with cloud or serverless platforms.
• Familiarity with JS engine internals such as V8, SpiderMonkey, or JavaScriptCore.
• Experience with standalone WebAssembly runtimes such as Wasmtime, Wasmer, or Lucet.
• Deep Linux, UNIX, kernel, or networking knowledge.
• Contributions to large open source projects.

Responsibilities

• Build features and improvements for the Workers Runtime.
• Improve runtime performance, reliability, and scale.
• Expand JavaScript API and WebAssembly support.
• 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.

Benefits

• Project Galileo: Since 2014, we've equipped more than 2,400 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 Cloudflare’s 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, we've 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. Here’s the deal - we don’t 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.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed