Senior 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.

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.

Austin, London, or Lisbon

We’re looking for a Senior Software Engineer to join our WARP Edge service team. You will be working on our WARP service, which securely terminates tunnelled traffic from millions of devices running warp client, and uses Cloudflare’s global network to securely route the traffic.

In your role, you will predominantly be using Rust to implement high-performance networking code that runs on linux. You’ll be expected to improve the code quality and to build solid, testable, and well-documented foundations. You will be most successful in this role if you have a good understanding of operating system concepts (virtual memory, multi-threading, process lifecycle, etc.) and networking protocols (TCP/IP, UDP, DNS, QUIC, H/3, proxying, etc.).

As a Senior Software Engineer, you will be expected to make significant contributions to the design and implementation of major development projects, working closely with our product managers and other teams to implement customer-impacting features.

• Excellent programming skills, with experience writing high-quality and low-complexity code with thorough documentation.
• Strong experience writing easily-testable and thoroughly-tested code.
• Great experience using lower-level languages, such as Rust, C, C++
• Very comfortable writing multithreaded, asynchronous code
• Strong experience with debugging network-related problems
• An understanding of how VPN technologies work, and the trade-offs between privacy, security, and anonymity
• Good understanding of, and experience with, security protocols and standards
• Experience in network performance monitoring and tuning
• Experience in running high performance and enterprise scale services at pace and at scale whilst maintaining operational stability
• Empathetic, proactive, and constructive communication skills, both verbal and written

Cloudflare offers a complete package of benefits and programs to support you and your family.

• 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

We also offer financial benefits, including Short and Long Term Disability Insurance, Life & Accident Insurance, 401(k) Retirement Savings Plan, and Employee Stock Participation Plan.

In addition, we offer flexible paid time off covering vacation and sick leave, as well as leave programs, including parental, pregnancy health, medical, and bereavement leave.

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.

We have several initiatives, including Project Galileo, Athenian Project, and 1.1.1.1, which demonstrate our commitment to this mission.

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.