Senior Software Engineer, Metering & Billing

The role

You will design, build, and maintain backend services for usage metering, billing, and AI Cost Management. You will work with Engineering and Product to build scalable services and APIs that process millions of events per second.

What you will do

• Design, implement, and maintain microservices and APIs for usage metering, billing, invoicing, and analytics at scale.
• Build AI Cost Management capabilities to track, attribute, and control LLM token usage and spend.
• Architect backend systems that process millions of events per second in real time.
• Work with Product and Engineering to define system requirements and ship solutions.
• Optimize database performance and ensure data integrity, reliability, and security.
• Integrate with third-party services like Stripe and CRMs.
• Support production services through monitoring, troubleshooting, and on-call rotation.
• Apply best practices for DevOps, CI/CD, and cloud-native development.
• Write automated tests to validate system behavior.
• Perform additional tasks required by your manager.

Required qualifications

• Experience with Go, Node.js.
• Contributions to open source projects.
• Familiarity with cloud-native technologies (e.g., Kubernetes, Docker).
• Exposure to big data systems (e.g., ClickHouse), streaming platforms (e.g., Kafka), and event-driven architectures.
• 5+ years of professional software development experience.
• Proven experience building scalable backend services.
• Demonstrated ability to deliver and maintain production systems at scale.
• Solid understanding of distributed systems, APIs, and database optimization.
• Excellent verbal and written communication skills.

Nice to have

• Familiarity with LLM APIs, token-based pricing, or AI gateway and observability tooling.
• Experience working on developer-focused products.

About the company

Kong Inc. is the AI Connectivity Company building the connectivity layer of AI. Their unified API and AI platform enables organizations to secure, manage, accelerate, govern, and monetize the flow of intelligence across APIs and AI traffic.