Staff Software Engineer, Metering and Billing
Employer · Kong
Software developerApplications developerFull-timeBudapest
On the Konnect Metering & Billing team at Kong, you'll design, build, and maintain the backend services behind two products: usage metering and billing, and AI Cost Management (Tokenomics), which gives customers visibility and control over what their AI usage costs. As a Backend Engineer, you'll work closely with Engineering and Product to build scalable services and APIs that process millions of events per second and have a direct, measurable impact on our customers.
Tasks
- Design, implement, and maintain microservices and APIs for usage metering, billing, invoicing, and analytics at scale.
- Build AI Cost Management capabilities that help customers track, attribute, and control LLM token usage and spend, including cost attribution, budgets, and usage limits.
- Architect backend systems that process millions of events per second in real time.
- Work with Product and Engineering to define system requirements and ship high-quality, customer-focused solutions.
- Optimize database performance and ensure data integrity, reliability, and security across distributed systems.
- Integrate with third-party services (e.g., Stripe, CRMs) to support billing and reporting needs.
- Support production services through monitoring, troubleshooting, and on-call rotation to keep them highly available.
- Apply best practices for DevOps, CI/CD, and cloud-native development.
- Write automated tests to validate system behavior and prevent regressions.
Requirements
- 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.