YATIN GOYAL

- Generative AI Pipeline: Architected Gemini 2.5 Flash integration via Vertex AI for logistics document extraction — engineered JSON schemas with 15+ field constraints, confidence scoring (0–1 scale), and IATA format validation, achieving 95%+ extraction accuracy and reducing manual data entry by 70% at $0.0016/extraction. - Scalable Backend: Engineered 20+ domain services across 142 DB migrations and 40+ tables (shipments, warehouses, billing, compliance), applying Clean Architecture and SOLID principles, improving overall system performance by 30%. - DB Optimization: Optimized PostgreSQL queries with parameterized statements, multi-table JOINs, conditional subqueries, and strategic indexing — achieving 50% query performance improvement and eliminating SQL injection vulnerabilities. - Concurrency & Resilience: Built async worker pool (300 goroutines) with circuit breaker, semaphore-based concurrency control, 3-attempt retry with exponential backoff, and graceful shutdown — reducing processing time by 40% and ensuring 99.9% uptime. - Real-Time Systems: Implemented WebSocket hub (goroutine multiplexing, RWMutex thread-safe) and Firebase FCM delivering push notifications to 10,000+ iOS/Android devices with live operational status updates. - Security: Designed JWT auth with RBAC (6+ hierarchical roles), AES-256-GCM encryption for OAuth token storage with SHA-256 key derivation, and authorization middleware protecting 50+ API endpoints. - Integrations & Observability: Integrated 7+ third-party services (QuickBooks Time OAuth 2.0, Google Drive, AWS S3, SES, SMTP2GO) via Gateway Pattern; established OpenTelemetry distributed tracing (10% sampling) with Google Cloud Trace for full production observability. - Testing & CI/CD: Maintained 95% test coverage via table-driven unit tests (testify mocks) and E2E integration tests with real PostgreSQL in Docker — 2.5-min CI/CD pipeline across 20+ services.

Certification

Scaler Academy

January 2022 - December 2022

Field: Software Development & Problem Solving

Coursework: Data Structures & Algorithms · Full Stack Development · System Design.