VolumeBilling Case Study
VolumeBilling
High-volume cloud billing platform for subscriptions, usage-based pricing, and enterprise APIs, built on Kubernetes with real-time data processing.
Project Overview
VolumeBilling is a SaaS platform designed to process large-scale billing data in real time, supporting subscription, usage-based, and bundled billing models. The platform provides enterprise-grade APIs and self-service portals, enabling customers to manage billing workflows efficiently at scale.
Industry
Context and Challenges
Client Requirements
Real-time billing data ingestion and processing
Highly scalable microservices architecture
Secure API gateway with authentication
Self-service portals for enterprise users
Multi-environment deployment (Dev, Staging, Prod)
High availability and fault tolerance
My Role
Designed and implemented a cloud-native DevOps architecture on Google Cloud Platform (GCP), enabling scalable, secure, and highly available billing infrastructure using Kubernetes and modern DevOps practices.
Strategy and Solution
Designed microservices-based architecture for billing workflows
Implemented Kubernetes (GKE) for container orchestration
Integrated Kong API Gateway with OIDC authentication
Secured secrets using HashiCorp Vault
Enabled real-time ingestion using Kafka
Architecture Highlights
Architecture
High-level microservices architecture on GKE with API gateway, identity, and data layers.
Technologies and Tools
Cloud
- Google Cloud Platform (GCP)
- GKE (Kubernetes)
- GCP Load Balancer
API & Security
- Kong API Gateway
- Keycloak (OAuth2 / OIDC)
- Vault (Secrets Management)
Data & Messaging
- Kafka (Real-time ingestion)
- PostgreSQL
- MongoDB
Container Platform
- Docker
- Kubernetes
Highlights
Outcome
Benefits
Business
Supports high-volume enterprise billing
Scalable SaaS platform
Faster onboarding of customers
Technical
Cloud-native microservices architecture
Secure API and identity management
Highly available Kubernetes infrastructure