Project Overview
Cubet partnered with a technology-driven services provider to modernize and unify how its digital platforms accessed business logic and content. The client's existing API layer was fragmented—some endpoints were tied to legacy systems, others lacked documentation or consistent standards.The mission was to build a centralized, scalable, and secure API architecture that would serve web, iOS, and Android platforms from a single Python-based backend—ensuring speed, consistency, and long-term maintainability.
Industry
Technology Services / Software Infrastructure / API Engineering
The Client
A services provider with multiple customer-facing applications across mobile and web, seeking to streamline its backend integration and boost developer agility across internal teams.
Challenges Addressed
The client faced several architectural and operational issues related to their API environment:
- Fragmented and inconsistent APIs made integration slow and error-prone
- Some APIs were tied to legacy systems and lacked proper documentation
- Security was not standardized across endpoints, leaving potential risks
- No unified versioning or observability, leading to poor monitoring and debugging capabilities
- Mobile and frontend teams struggled with delays due to unclear specs and inconsistent responses
The client needed a high-performance backend layer that was secure, documented, and developer-friendly from day one.
Collaboration in Action
Cubet engineered a centralized API layer using FastAPI, designed with performance, security, and developer experience at its core. The architecture was built to scale with the client’s mobile and web platforms, support asynchronous execution, and provide real-time observability and debugging tools. The system was containerized using Docker and deployed with production-grade tooling. It featured rate limiting, role-based access, sandbox environments for frontend teams, and full API documentation to reduce integration overhead.
Technologies Deployed
- Language & Frameworks:
- Python 3.11
- FastAPI and Pydantic for schema validation and endpoint organization
- Authentication & Security:
- OAuth 2.0
- JWT-based authentication with refresh token handling
- Redis middleware for abuse protection
- Data & Caching:
- PostgreSQL for persistent data
- Redis for content caching and token management
- Monitoring & Observability:
- Prometheus for metrics collection
- Grafana dashboards for real-time API performance visibility
- ELK stack and New Relic for logging and error tracking
- DevOps & Deployment:
- Docker for containerization
- Uvicorn and Nginx for server performance
- GitHub Actions for CI/CD
- Developer Experience Tools:
- Swagger UI with OpenAPI documentation
- Postman collections for API testing
- Mock endpoints and sandbox environments for early integration
Innovative Feature
The project’s standout innovation was the developer-centric API design, combining FastAPI’s async capabilities with out-of-the-box documentation and integration tooling.
This approach empowered frontend and mobile teams with consistent schemas, real-time testing environments, and shared Postman collections—drastically accelerating development cycles. The inclusion of real-time observability tools ensured that latency, errors, and traffic spikes could be monitored proactively.
Value Delivered
- Reduced API response time by over 40% versus the legacy system
- Accelerated frontend and mobile integration, enabling quicker feature delivery
- Cut QA and integration testing time in half due to reliable documentation and mocks
- Improved security posture through unified authentication and access control
- Future-proofed backend with modular design, clear versioning, and observability built in
User Feedback
Development teams praised the speed of the new API and the clarity of documentation. Mobile engineers were able to build and test features faster, while backend teams noted reduced support overhead and more predictable performance. Operations teams highlighted the value of having real-time dashboards for traffic, errors, and latency.
Conclusion
This engagement laid the foundation for a modern, high-performance API infrastructure. With FastAPI at the core, security protocols in place, and developer tooling tightly integrated, the platform now powers seamless access for mobile and web applications across the business.
Impact Made
Cubet’s solution helped the client move from a scattered, underperforming API layer to a robust backend architecture ready for scale. The unified API system supports innovation, reduces friction between teams, and ensures a smooth path forward for future product development.