ANKIT GHOSH

Stochastic approximation-based portfolio optimizer using Robbins–Monro + EWMA volatility forecasting. Achieved 22.8% annualized return and Sharpe ~1.0 on 10+ years of financial data.

Post-training alignment toolkit for small open-weight LLMs — features a 5-stage curriculum SFT pipeline with 4-bit QLoRA & replay buffer, a 70B teacher-guided RLAIF flywheel with a 7-layer safety validator, and a tiered evaluation harness on a 4GB consumer GPU.

Production-grade financial RAG pipeline ingesting unstructured SEC filings (10-K/10-Q) with hybrid BM25 + dense semantic retrieval, top-K cross-encoder reranking, source-grounded citation validation, and hallucination guardrails.

Modular evaluation & guardrails framework for financial LLM applications — Groq 120B judge rubrics, sub-millisecond local rule scoring (TTR, n-gram), PII detection, citation grounding, SR 11-7 MRM audit compliance, and Streamlit UI.

Exactly-once payment processing system with Redis-backed idempotency, double-entry ledger, and virtual threads. Built for high-volume financial workloads.

Distributed microservices backend with MCP tools for GenAI agent consumption, Kubernetes HPA, circuit breaker, and AWS-shaped infrastructure.