Case Study
API & Integration Systems
Built integration layers across external systems with different latency, reliability, authentication, state, and failure-mode characteristics, with emphasis on clear internal interfaces and debuggable failure handling.
Problem
Production workflows depended on multiple external systems: third-party APIs, WebSocket services, provider systems, browser sessions, authentication flows, market-data feeds, and execution endpoints. Each system failed differently, exposed state differently, and required different operational visibility.
What I Built
- API adapters for external services with different request, response, auth, and state models.
- WebSocket command/control flows for real-time state, monitoring, and operational actions.
- Authentication, session handling, retry, recovery, and state reconciliation workflows.
- Browser automation infrastructure with proxy/session management, Docker workers, and failure recovery.
- Dashboards and review tools that made integration state and failures visible enough to debug.
Architecture
External APIs and browser sessions -> integration adapters -> normalized internal state -> runtime workflows -> logs, metrics, dashboards, CLIs, and operational review.
Technical Challenges
- Handling inconsistent external state without hiding failure modes.
- Making retries and recovery observable instead of opaque background behavior.
- Keeping real-time WebSocket state understandable for operators and debugging workflows.
- Designing interfaces that kept domain complexity out of the rest of the system.
What This Demonstrates
API design, external integrations, operational reliability, WebSocket systems, interface boundaries, failure handling, browser automation, and practical production debugging for systems that depend on services outside your control.