Unified Financial Services API Hub
Built a unified API layer connecting 15+ financial service providers, enabling rapid product development and reducing integration time from months to days while maintaining SOC 2 compliance.
The Challenge
Every new integration was a multi-month project, slowing product velocity to a crawl.
- Each banking partner required 3-4 months of custom integration work
- Engineers spent 70% of their time maintaining existing integrations instead of building features
- A single API change from a partner caused a production outage affecting 12,000 users
- Security reviews for each integration added 6 weeks to launch timelines
- The company couldn't expand to new markets because integration costs were prohibitive
- Technical debt from rushed integrations was creating unpredictable bugs
The Solution
We architected a unified integration layer that abstracts provider complexity behind clean interfaces.
- Normalized API design providing consistent interfaces regardless of underlying provider
- GraphQL gateway enabling clients to request exactly the data they need in a single call
- Provider abstraction layer allowing hot-swapping of banking partners without code changes
- Comprehensive error handling translating provider-specific errors into actionable messages
- Rate limiting and circuit breakers protecting the system from provider outages
- Encrypted credential vault with automatic rotation and audit logging
- Real-time monitoring dashboard with latency, error rates, and usage analytics
- SOC 2 Type II compliant architecture with documented security controls
Implementation
Week 1-2: Architecture design and security framework with compliance review
Week 3-4: Core API gateway and GraphQL schema design
Week 5-6: First three provider integrations (primary banking partners)
Week 7-8: Error handling, rate limiting, and resilience patterns
Week 9-10: Credential management and security controls implementation
Week 11-12: Monitoring, alerting, and documentation
Week 13-14: Migration of existing integrations to new platform
Week 15-16: SOC 2 audit preparation and compliance documentation
The Results
The platform accelerated from integration bottleneck to rapid product velocity.
"We added three new banking partners last quarter—each took less than two weeks. Before, that would have been nine months of work. This platform is why we closed our Series B."