Yash Nileshkumar Mirani

About

Generalist software engineer with recent contract work at Vertex Pharmaceuticals shipping a desktop-integrated RAG assistant for lab scientists (2000+ pages ingested; ~40% support-ticket reduction in pilot). Previously owned Python/AWS financial automation services at Amazon operating at multi-billion-dollar scale, with strong strengths in API design, observability, and database/performance tuning; also built a React/TypeScript AI contract analysis product (ContractsGuy).

Experience

Education

Key Strengths

• Shipped end-to-end RAG chat agent (benchmarks, backend, infra, frontend) for Vertex; ingested 2000+ pages and reduced support tickets ~40% in pilot
• Strong user/workflow-driven product decisions (embedded assistant into desktop app to fit scientist workflows vs web chatbot)
• Built and operated high-scale financial automation systems at Amazon (handled ~$6B annual expense automation; reduced month-end close costs by ~$20M annually)
• Production-grade API/service design (auth via IAM/SigV4, versioning, structured error contracts, idempotency, layered architecture)
• Reliability and operability focus (tests, observability, alarms, canary rollouts)
• Database and performance optimization (pgvector similarity search, indexing/denormalization/partitioning; improved reconciliation latency ~35%)
• Led end-to-end incident response for quarter-end scaling spike (DB CPU saturation) and stabilized via query/index tuning and read replicas