Vaishnavi Pujala

About

Independent builder of production-grade systems: shipped an end-to-end URL shortener with JWT auth, Redis rate limiting/caching, Postgres, Docker, and real-time analytics, and separately architected a Redis-backed distributed task queue handling 1000+ tasks/min. Demonstrates strong distributed-systems instincts (atomicity, retries/DLQ, idempotency, heartbeats) plus a focus on maintainable code and self-documenting APIs (FastAPI/OpenAPI, versioned routes).

Key Strengths

• Built and deployed an end-to-end full-stack URL shortener (React/TypeScript + FastAPI) with JWT, Redis, PostgreSQL, Docker
• Performance under load: 500+ concurrent requests with sub-100ms response time
• Designed a distributed task queue processing 1000+ tasks/min with retries, DLQ, and idempotency
• Strong observability focus: real-time WebSocket dashboard for queue depth, worker status, throughput, and failures
• Debugged and fixed high-concurrency race conditions using Redis atomic operations and Lua scripting
• Improved production reliability with worker heartbeat monitoring and automatic restarts
• Maintainability practices: strict TypeScript, clean layering, reproducible dev env (Docker Compose), API documentation
• Shipped production RAG assistant with <2s end-to-end generation
• Reduced LLM JSON/structure failure rate from ~30% to <3% via chunking redesign + validation + retries
• Built multi-stage agent pipeline with typed contracts, schema validation gates, and request-context state tracking
• Strong LLM observability: stage-level metrics (latency, similarity scores, validation pass rate, retry rate) used to drive debugging/prioritization
• Designed offline/online/continuous evaluation loops; improved retrieval similarity (0.58→0.81) and validation pass rate (70%→97%+)
• Built robust data pipelines on messy ERP-like data with dbt tests, quarantine routing, and idempotent Airflow DAGs
• Prevented downstream analytics errors by adding temporal consistency validation for anomalous timestamps

Experience

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Publications

2 publications