Senior Software Engineer, Workers Runtime

Cloudflare; New York (NY); On-site; USD 185,000 - 254,000; Full time

Benefits offered by this job

Medical Insurance

Dental Insurance

Vision Insurance

401(k) Retirement Savings Plan

Employee Stock Participation Plan

Flexible Paid Time Off

Job summary

Cloudflare’s Emerging Technologies & Incubation team is hiring on the Workers Runtime team to improve the edge runtime and expand support for JavaScript and WebAssembly. You will own features, scale the runtime, and contribute to a large-scale distributed system.

With 2+ years in C++ or Rust, you’ll work in a fast-paced environment at Cloudflare, addressing performance and reliability while shaping capabilities for customers at the edge.

Qualifications

• 2+ years of professional experience with C++ or Rust.
• Strong CS fundamentals: data structures, algorithms, software design.
• Operational mindset and experience owning production systems.
• Deep understanding of the web: HTTP, JavaScript, WebAssembly.
• 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.
• Expand JavaScript API and WebAssembly support.
• 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 balancing product goals with technical execution.

Skills

C++

Rust

Job description

About Us

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. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine's Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company.

Available Locations: Austin, TX | New York, NY | San Francisco, CA | London, UK

About The Role

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.

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.

Desirable Skills, Knowledge & Experience

• 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.

Bonus Points

• 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.

Compensation

Compensation may be adjusted depending on work location.

• For Bay Area based hires: Estimated annual salary of $194,000 - $266,000
• For New York City, New Jersey, Washington, Washington DC, and California (excluding Bay Area) based hires: Estimated annual salary of $185,000 - $254,000

Equity

This role is eligible to participate in Cloudflare’s equity plan.

Benefits

Health & Welfare Benefits

• Medical/Rx Insurance
• Dental Insurance
• Vision Insurance
• Flexible Spending Accounts
• Commuter Spending Accounts
• Fertility & Family Forming Benefits
• On-demand mental health support and Employee Assistance Program
• Global Travel Medical Insurance

Financial Benefits

• Short and Long Term Disability Insurance
• Life & Accident Insurance
• 401(k) Retirement Savings Plan
• Employee Stock Participation Plan

Time Off

• Flexible paid time off covering vacation and sick leave
• Leave programs, including parental, pregnancy health, medical, and bereavement leave

What Makes Cloudflare Special?

We’re not just a highly ambitious, large-scale technology company. We’re a highly ambitious, large-scale technology company with a soul. Fundamental to our mission to help build a better Internet is protecting the free and open Internet.

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.

This position may require access to information protected under U.S. export control laws, including the U.S. Export Administration Regulations. Please note that any offer of employment may be conditioned on your authorization to receive software or technology controlled under these U.S. export laws without sponsorship for an export license.

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 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. We are an AA/Veterans/Disabled Employer.

Cloudflare provides reasonable accommodations to qualified individuals with disabilities. Please tell us if you require a reasonable accommodation to apply for a job. 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 [e-mail] or via mail at 101 Townsend St. San Francisco, CA 94107.