Kong

Staff Software Engineer, Metering and Billing

Kong · Hungary
Hungary Posted 2026-10-26
Type
Full-time
Experience
5+ yr

Are you ready to unlock intelligence?

If you don’t think you meet all of the criteria below but are still interested in the job, please apply. Nobody checks every box - we’re looking for candidates that are particularly strong in a few areas, and have some interest and capabilities in others.

About the Role:

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.

What You’ll Do:

  • 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.
  • And any additional tasks required by your manager.

What You’ll Bring:

  • 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.

Bonus points:

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

#LI-BR2

About Kong:

Kong Inc., the AI Connectivity Company, is building the connectivity layer of AI. Trusted by the Fortune 500® and AI-native startups alike, Kong’s unified API and AI platform enables organizations to secure, manage, accelerate, govern, and monetize the flow of intelligence across APIs and AI traffic — on any model, any cloud. For more information, visit www.konghq.com http://www.konghq.com.

LLMNode.jsKubernetesDockerKafkaGo
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