Senior Fintech Backend Engineer - Billing & Payments

CloudFlare; San Francisco (CA); On-site; USD 150,000 - 210,000; Full time

Job summary

Cloudflare is seeking a Senior Software Engineer for Fintech to design and scale billing infrastructure. You will own core microservices handling metering, subscriptions, invoicing, payments, and revenue recognition in a rapidly growing product portfolio.

You will lead projects end-to-end, collaborate with Product, Finance, and other teams, and ensure high reliability and correctness across high transaction volumes.

Qualifications

• Five or more years of professional software engineering experience.
• Experience building and operating distributed systems or backend services in production.
• Proficiency in Go or another modern programming language with Go focus.
• Strong understanding of RESTful APIs, service security, and API standards.
• Working knowledge of SQL and relational databases such as PostgreSQL or MySQL.
• Experience designing secure, highly available microservices in Linux/Unix.
• Familiarity with event-driven architectures and asynchronous processing.
• Strong troubleshooting, communication, and project ownership skills.

Responsibilities

• Build Billing Systems: Design, develop, and operate transactional microservices supporting metering, subscriptions, invoicing, payments, and financial workflows.
• Own Projects End to End: Drive initiatives from requirements and technical design through implementation, testing, deployment, and ongoing operation.
• Ensure Accuracy and Reliability: Build fault-tolerant systems that safely handle retries, failures, concurrency, and high transaction volumes while preserving financial correctness.
• Maintain Operational Excellence: Monitor production services, investigate billing issues, improve observability, and address underlying causes of recurring incidents.
• Shape Technical Direction: Participate in architecture reviews, make pragmatic trade-offs, and help improve engineering standards across the billing platform.
• Collaborate Cross-Functionally: Work with Product, Finance, Accounting, Support, and other engineering teams to translate complex business requirements into maintainable solutions.

Skills

5+ years experience

Distributed systems

Go language

RESTful APIs

SQL / PostgreSQL / MySQL

Linux/Unix

Event-driven

Troubleshooting

Tools

PostgreSQL

Redis

Kafka

Kubernetes

Docker

Temporal

Job description

Cloudflare is seeking a Senior Software Engineer for Fintech to design and scale billing infrastructure. You will own core microservices handling metering, subscriptions, invoicing, payments, and revenue recognition in a rapidly growing product portfolio.

You will lead projects end-to-end, collaborate with Product, Finance, and other teams, and ensure high reliability and correctness across high transaction volumes.