Python · FastAPI · LangGraph · PostgreSQL · Redis · Next.js · LLaMA 3.3

• Built autonomous buyer-agent infrastructure where the LLM proposes purchases, but an isolated deterministic policy engine gates every payment action before Razorpay’s API is called — the agent never directly initiates money movement.
• Enforced an append-only, database-trigger-backed audit trail logging every state transition, tenant merchant isolation, and hard consumer spend-authorization limits.
• Shipped a full sandbox-to-live compliance pipeline featuring webhook-driven external agent integration with HMAC verification and automatic retry handling.

Next.js · FastAPI · PostgreSQL · LLaMA 3.3 70B · TypeScript

• Architected the complete backend and AI layer for a verified campus community platform, solo developer scaling to 200+ active students.
• Shipped 3 AI features powered by LLaMA 3.3 70B: student support assistant ("Reva"), an adaptive quiz engine adjusting difficulty dynamically, and a YouTube-to-structured-notes generator.
• Placed in the Top 18 out of 500+ participants in The Maverick Ect AI Challenge 2026 (Dewang Mehta Foundation Trust).

Python · Flask · PostgreSQL · Scikit-learn · XGBoost · LangChain · Pydantic

• Trained and benchmarked Logistic Regression, Random Forest, and XGBoost classifiers for diabetes risk prediction, selecting optimal thresholds for clinical explainability.
• Implemented a RAG patient assistant grounded on localized EHR history, complete with transactional CRUD operations, Pydantic validation, and physician notification alerts.
• Eliminated free-tier cloud cold starts on Render using an automated 10-minute heartbeat via UptimeRobot.