Principal Billing Systems Engineer

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.

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. We hire the best people based on an evaluation of their potential and support them throughout their time e join us!

Cloudflare’s Billing Engineering Team is at the heart of every product launch, campaign, and initiative that Cloudflare undertakes. We build and maintain critical systems for billing, payments, usage metering, aggregation, invoicing and revenue recognition — powering billions in revenue and serving millions of customers.

Currently we're rebuilding our entire billing platform, designing a metering and aggregation layer that scales effortlessly while ensuring financial accuracy. This is high-impact, high-stakes work that touches all Cloudflare’s cutting‑edge products like AI, Zero Trust, Edge Compute, Bot Management, DDoS Protection, etc.

As a Senior Engineering Manager, you’ll lead a team of talented, collaborative engineers working across Cloudflare’s ecosystem. You’ll navigate multiple high‑profile projects, foster a culture of proactive communication and continuous learning, and drive technical excellence.

If you thrive on solving hard challenges at the intersection of financial infrastructure and distributed systems, this is your opportunity to make a massive impact while growing with us.

We are looking for an energetic team‑focused engineer who is growth mindset oriented, able to drive their work from inception, requirements definition, technical specification phase, development, testing and go live.

You will work on a range of transactional microservices written in Go. You will be involved in helping to maintain our operational excellence by triaging, solving various inbound tickets related to issues across services billing maintains. As you grow within the team you will be given opportunities to own bigger initiatives and lead projects from start to finish solo or as part of a smaller team.

Our tech stack is a modern container‑based microservice architecture. Technologies we use include Docker, Go (golang), Postgre

SQL, Redis, Kafka, Kubernetes, Temporal and the usual Unix/Linux tools and workflows. We strive to build reliable, fault tolerant systems that can operate at Cloudflare’s scale.

• BS+ in Computer Science or equivalent experience
• 5+ years professional experience as a developer/engineer
• Knowledge of Golang or desire to learn it
• Solid understanding of RESTful APIs and service security
• Working knowledge of SQL and relational databases such as Postgre
  
  SQL or MySQL
• Experience with modern Unix/Linux development and runtime environment
• Experience implementing secure and highly‑available distributed systems/microservices
• Familiarity with event driven architecture
• Experience with API tooling and standards (Swagger/OpenAPI, OAuth/JWT)
• Strong interpersonal and communication skills with a bias towards action

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…