Senior Software Engineer, Workers Runtime

Overview

Senior Software Engineer, Workers Runtime at Cloudflare. We’re hiring for a Senior Software Engineer to join the Workers Runtime team at Cloudflare.

Available Locations: Austin, TX | Lisbon, Portugal | London, UK

About Cloudflare

At Cloudflare, we are on a mission to help build a better Internet. We protect and accelerate Internet applications without adding hardware, installing software, or changing a line of code. Cloudflare’s edge and network empower customers from individuals to Fortune 500 companies, helping them improve performance and reduce spam and attacks. Cloudflare is recognized for its culture and innovation.

We realize people do not fit into neat boxes. We are looking for curious and empathetic individuals who are committed to developing themselves and learning new skills, and we are ready to help you do that. We cannot complete our mission without building a diverse and inclusive team. We hire the best people based on an evaluation of their potential and support them throughout their time at Cloudflare. Come join us

Responsibilities

We are looking for a Systems Engineer to join our team. You will work with a team of passionate, talented engineers building innovative products that bring security and speed to millions of Internet users each day. You will play an active part in shaping product features based on what’s technically possible. You will help ensure the company hits its ambitious engineering goals from both business and technical perspectives, balancing big-picture goals with implementation details.

You bring a passion for meeting business needs while building technically innovative solutions, and excel at shifting between the two—understanding how big-picture goals inform technical details, and vice-versa. You thrive in a fast-paced iterative engineering environment.

Qualifications

- At least 2 years of recent professional experience with C++ or Rust.
- Solid understanding of computer science fundamentals including data structures, algorithms, and object-oriented or functional design.
- An operational mindset — we don’t just write code, we own it in production.
- Deep understanding of the web and technologies such as web browsers, HTTP, JavaScript and WebAssembly.
- Experience working in low-latency real-time environments (e.g., game streaming, game engine architecture, high-frequency trading, payment systems).
- Experience debugging, optimizing and identifying failure modes in a large-scale Linux-based distributed system.

Bonus Points

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

EEO and Accommodations

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 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.

Cloudflare provides reasonable accommodations to qualified individuals with disabilities. If you require a reasonable accommodation to apply for a job, please contact us at hr@cloudflare.com or via mail at 101 Townsend St. San Francisco, CA 94107.

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