Senior Software Engineer

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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.

Austin, London, Lisbon

Production Engineering is responsible for the world’s most reliable, observable, performant, and safe network ecosystem. Our customers rely on our products and systems to safely modify, troubleshoot, and release products without external impact. Our external customers rely on us to provide seamless and predictable incident, traffic, policy management, resulting in the fastest and safest network services in the world. We are accountable for the overall performance of internal and external facing services, guiding our product teams to optimal configurations and maximum efficiency.

From the moment that a packet enters the Cloudflare ecosystem, we know exactly what its expected purpose and behavior is and we are capable of determining and exposing anomalous behavior. The Cloudflare network makes it possible to solve challenges at massive scale and efficiency which would be impossible for almost any other organization.

In this role, you can expect to:

• Design, write, and deliver software that improves Cloudflare's internal and external platforms
• Scale and evolve systems through software and automation to improve reliability and velocity
• Work on highly distributed and scalable systems with a globally distributed team
• Participate in the constant cycle of knowledge sharing and mentoring
• Research and introduce cutting‑edge technologies
• Contribute to open source

• We want someone who understands and obsesses over front‑end systems.
• Passion for improving developer experience and increasing development velocity.
• Multiple years of experience in frontend engineering, specializing in JavaScript, Type Script, and React.
• Strong knowledge of UI infrastructure, CI/CD, and testing frameworks (e.g., Playwright, Cypress).
• Proven ability to drive projects independently, from concept to implementation.

• Expertise in React, Type Script, and modern front‑end systems
• Experience with modern JavaScript bundling tools like Webpack or Vite
• Familiarity with RESTful APIs
• Familiarity with backend software development in Go
• Experience building and maintaining integration test suites with API mocks
• Experience building and scaling large‑scale web applications.

• Help us shape and improve the engineering process within Cloudflare.
• Shape best practices and drive impactful engineering change.
• Work with modern technologies and solve large‑scale challenges.

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  or via mail at 101 Townsend St.

San Francisco, CA 94107.