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Zeel Patel
Junior Backend Engineer specializing in FinTech microservices
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About
Backend developer (recent co-op at Ticker) building and architecting financial backend services with near real-time data needs, including third-party API integrations. Improved performance and reliability via Redis caching (tiered refresh + TTL) and PostgreSQL query tuning (EXPLAIN ANALYZE + composite indexes), and has exposure to AI-agent/RAG concepts for validating stock-market information against trusted sources.
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Key Strengths
- Built production financial REST APIs with sub-200ms response-time target
- Reduced third-party API latency by adding Redis caching layer (frequent requests ~100ms)
- Designed tiered cache refresh strategy (premium 1-minute vs non-premium 15-minute) with TTL-based expiry
- PostgreSQL schema design for portfolios/holdings with constraints (FKs, unique) and normalization
- Diagnosed and fixed slow queries using EXPLAIN ANALYZE and composite indexes
- Production reliability practices: structured logging, metrics, health checks, retries with exponential backoff, circuit breakers, alerting
- Python maintainability practices: type hints + mypy, Pydantic validation, asyncio for IO-bound concurrency
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