Senior Software Engineer jobs in United States
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Cloudflare · 3 days ago

Senior Software Engineer

Cloudflare is on a mission to help build a better Internet, running one of the world’s largest networks that powers millions of websites. They are seeking a Senior Software Engineer to design and deliver software that improves their internal and external platforms while enhancing system reliability and performance.

AnalyticsEnterprise SoftwareSecurityWeb Hosting
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H1B Sponsor Likelynote

Responsibilities

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

Qualification

JavaScriptTypeScriptReactUI infrastructureCI/CDTesting frameworksRESTful APIsBackend development in GoIntegration test suitesLarge-scale web applications

Required

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, TypeScript, 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

Preferred

Expertise in React, TypeScript, 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

Benefits

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.

Company

Cloudflare

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Cloudflare is a web performance and security company that provides online services to protect and accelerate websites online.

H1B Sponsorship

Cloudflare has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (117)
2024 (115)
2023 (66)
2022 (98)
2021 (83)
2020 (37)

Funding

Current Stage
Public Company
Total Funding
$2.08B
Key Investors
Franklin TempletonFidelityUnion Square Ventures
2025-06-13Post Ipo Debt· $1.75B
2019-09-12IPO
2019-03-12Series E· $150M

Leadership Team

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Matthew Prince
CEO & Co-Founder
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Lee Holloway
Co-Founder & Lead Engineer
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Company data provided by crunchbase