Principal Software Engineer

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. 

At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a "normalized" problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow, while ensuring that every improvement, no matter how small, is shared across the team to lift everyone up. If you’re the type of person who values curiosity over bureaucracy, and that AI is a partner in solving tough problems to keep the Internet moving forward, you’ll fit right in.

Available Locations: Austin, Atlanta, Denver, Seattle, Washington D.C

About the role

We're seeking an exceptional Principal Engineer to join our newly formed Product Platform Task Force—a high-impact team that tackles critical infrastructure initiatives spanning our entire product suite and Cloudflare's massive edge network. 

What you'll do

You'll partner with engineering leadership to identify, architect, and drive execution on complex technical projects that transcend individual team boundaries, from organization-wide authentication and authorization systems to ultra-distributed architectures that leverage Cloudflare's global edge infrastructure, performance optimizations, and shared services that enable multiple products. This role is perfect for a seasoned technical leader who excels at solving ambiguous, high-stakes problems with broad organizational impact, mentoring senior engineers, and establishing technical direction that influences the entire engineering organization. You'll have significant autonomy to shape our technical strategy while working collaboratively across product teams, platform engineers, and executive leadership to ensure our infrastructure scales efficiently and our engineering culture thrives.

Responsibilities

• Define technical strategy and lead execution of high-impact, cross-cutting initiatives that benefit the entire engineering organization, such as service-to-service authentication systems, RBAC/authorization frameworks, ultra-distributed architectures leveraging Cloudflare's edge network, API layer improvements, observability infrastructure, and shared services that span our product portfolio.
• Architect and implement security-critical systems including authentication, authorization, and access control mechanisms that work seamlessly across our distributed infrastructure, ensuring both robust security postures and excellent developer experiences for teams building on these platforms.
• Design and build ultra-distributed systems that take full advantage of Cloudflare's massive global edge network, including edge computing with Workers and Durable Objects, ensuring our services deliver exceptional performance and reliability to users worldwide while managing the complexity of geo-distributed state and coordination.
• Set architectural standards and technical direction for our Product Platform stack—including Go services, Python pipelines, TypeScript edge computing (Cloudflare Workers/Durable Objects), and PostgreSQL data layer—ensuring decisions balance immediate business needs with long-term scalability, maintainability, and engineering velocity.
• Identify critical technical debt, systemic inefficiencies, and infrastructure gaps across the organization, building business cases and driving consensus among leadership to fund and execute solutions that might otherwise fall through the cracks of product-focused roadmaps.
• Serve as a technical force multiplier by embedding with tiger teams or product groups that need deep infrastructure expertise, providing architectural leadership, hands-on implementation where needed, and ensuring projects ship with production-grade reliability, security, and performance.
• Mentor and elevate senior engineers across the organization through code reviews, architectural discussions, and technical design reviews, establishing patterns and practices for distributed systems, security, and edge computing that raise the bar for engineering excellence throughout the company.

Desirable Skills, Knowledge, and Experience:

• 10+ years of software engineering experience with a demonstrated history of leading complex, organization-wide technical initiatives that delivered measurable improvements to system performance, reliability, security, developer productivity, or engineering culture.
• Deep expertise in building distributed systems and production infrastructure at scale, with proficiency in Go and strong working knowledge of Python/TypeScript; proven ability to make sound architectural decisions for systems that span multiple data centers, regions, or edge locations.
• Strong understanding of authentication, authorization, and security fundamentals including experience designing and implementing service-to-service authentication systems, RBAC/permission models, identity management, or similar security-critical infrastructure.
• Extensive experience with PostgreSQL or similar relational databases at scale, including advanced optimization techniques, replication strategies, and understanding the tradeoffs of distributed data storage and consistency models.
• Strong track record of technical leadership and influence without direct authority, including driving consensus on technical decisions across multiple teams, mentoring senior engineers, and establishing architectural patterns that are widely adopted across an organization.
• Exceptional ability to navigate ambiguous problem spaces, identify the highest-impact technical work, and drive projects autonomously from conception through adoption—balancing pragmatic execution with long-term technical excellence.
• Please be prepared to discuss specific examples of organization-wide technical initiatives you've led, particularly distributed systems or security infrastructure, their measurable business impact, and how you influenced technical direction across multiple teams.

Nice to Have Skills

• Deep experience with Cloudflare's developer platform, particularly Cloudflare Workers, Durable Objects, and architecting ultra-distributed applications for edge computing environments at global scale.
• Previous experience as a Principal Engineer, Staff+ engineer, or technical leader on platform, infrastructure, or task force teams that operate outside traditional product roadmaps with a focus on enabling engineering organizations.
• Proven expertise in building developer platforms, service mesh architectures, zero-trust security systems, API gateways, or other foundational distributed infrastructure that significantly improved engineering velocity or operational excellence.
• Experience architecting and operating billing systems, usage metering, or other high-stakes platform components that require exceptional reliability, accuracy, and work correctly in distributed, eventually-consistent environments.
• Public evidence of technical leadership such as conference talks on distributed systems or security, widely-read technical blog posts, significant open source contributions, or published architectural patterns that have been adopted by the broader engineering community.

Compensation

Compensation may be adjusted depending on work location.

• For New York City, Washington, Washington D.C. and California (excluding Bay Area) based hires: Estimated annual salary of $230,000 - $281,000

Equity

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

Benefits

Cloudflare offers a complete package of benefits and programs to support you and your family.  Our benefits programs can help you pay health care expenses, support caregiving, build capital for the future and make life a little easier and fun!  The below is a description of our benefits for employees in the United States, and benefits may vary for employees based outside the U.S.

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.

Sound like something you’d like to be a part of? We’d love to hear from you!

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 hr@cloudflare.com or via mail at 101 Townsend St. San Francisco, CA 94107.