Senior Fintech Software Engineer: Billing Platform

Cloudflare; New York (NY); On-site; USD 150,000 - 210,000; Full time

Job summary

Cloudflare’s Billing Engineering team builds and operates the systems responsible for usage metering, aggregation, subscriptions, invoicing, payments, and revenue recognition. As a Senior Software Engineer on the Fintech team, you will design reliable financial infrastructure, lead projects from requirements through production, and help ensure billing remains accurate as Cloudflare grows.

We are rebuilding key parts of our billing platform to scale with products including AI, Zero Trust,

Qualifications

• Five or more years of professional software engineering experience.
• Experience building and operating distributed backend services in production.
• Proficiency in Go with interest in extensive Go work.
• Strong understanding of RESTful APIs and API standards (OpenAPI, OAuth, JWT).
• Working knowledge of SQL and relational databases (PostgreSQL/MySQL).
• Experience designing secure, highly available microservices in Linux/Unix environments.

Responsibilities

• Build Billing Systems: design, develop, and operate microservices for metering, subscriptions, invoicing, payments, and financial workflows.
• Own Projects End to End: drive initiatives from requirements and design through implementation, testing, deployment, and operation.
• Ensure Accuracy and Reliability: build fault-tolerant systems handling retries, concurrency, and high volumes while preserving financial correctness.
• Maintain Operational Excellence: monitor production services, investigate billing issues, improve observability, address root causes of incidents.
• Shape Technical Direction: participate in architecture reviews and raise engineering standards across the billing platform.
• Collaborate Cross-Functionally: work with Product, Finance, Accounting, Support and other teams to translate business requirements into solutions.

Skills

Go / modern language

RESTful APIs

SQL / relational databases

Linux / Unix

Event-driven architectures

Troubleshooting & ownership

Tools

PostgreSQL

Redis

Kafka

Kubernetes

Docker

Temporal

Job description

Cloudflare’s Billing Engineering team builds and operates the systems responsible for usage metering, aggregation, subscriptions, invoicing, payments, and revenue recognition. As a Senior Software Engineer on the Fintech team, you will design reliable financial infrastructure, lead projects from requirements through production, and help ensure billing remains accurate as Cloudflare grows.

We are rebuilding key parts of our billing platform to scale with products including AI, Zero Trust,