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irishz12/README.md

Hi, I'm Rishikesh 👋

GenAI / Applied AI Engineer building retrieval, evaluation, and agentic systems in Python on AWS — focused on making AI systems verifiably correct, not just impressive in a demo.

Currently: Data Science Intern @ Kotak Life Insurance — testing and evaluating a GenAI Sales Assistant, and building a RAG evaluation & benchmarking framework on AWS Bedrock (RAGAS, DeepEval).

📍 Bengaluru, India · 🎓 B.Tech CSE (AI & ML), JAIN University — 2026


Featured Projects

A full-stack RAG system answering factual and comparative questions across 6 insurance products straight from PDF brochures — hybrid BGE-M3 dense + BM25 sparse retrieval (RRF), BGE cross-encoder reranking, and Qwen3 32B generation via AWS Bedrock, with a citation-verification step that checks every generated claim against retrieved source text before it's shown. Scored: Faithfulness 0.936 · Context Recall@4 0.837 · Answer Correctness 0.725 (RAGAS, 30-question benchmark) Python FastAPI Next.js Chroma AWS Bedrock

A LangGraph 4-agent pipeline (Planner → Investigation → Reflection Gate → Resolution) that proposes refund/replacement/escalation decisions — every proposal is validated by deterministic Python policy checks before execution. "LLM proposes, Python validates, Action executes." Scored: 100% issue-classification · 93.94% resolution accuracy · 96.97% final-status accuracy (33-scenario suite, 2.29s avg latency) Python LangGraph FastAPI Next.js Docker

A side-by-side demo exposing training-serving feature skew: a LightGBM fare model scored through duplicated ("Broken") vs. shared ("Correct") feature-transformation pipelines, across 9 features and 3 injectable skew scenarios. Showed: a distance-unit skew silently shifting a predicted fare from ~$20.29 (9/9 parity) to ~$29.19 (8/9 matched) — despite a valid API response either way. Python LightGBM FastAPI React pytest

A pipeline processing 7.08M U.S. domestic flights (BTS, full-year 2024) through PostgreSQL bulk-loading and tail-number-based aircraft-rotation reconstruction, independently estimating delay propagation between an aircraft's consecutive legs and benchmarking it against the BTS's official attribution. Found: 95.28% valid aircraft-link rate · 0.764 buffer-adjusted correlation · downstream delay rate falls from 69.06% (0–30 min buffer) to 15.29% (120+ min) Python PostgreSQL SQL Plotly Dash


Tech Stack

GenAI & LLM: RAG · LangGraph · AWS Bedrock (Converse API, Bedrock Mantle) · Strands Agents · LLM evaluation (RAGAS, DeepEval) · Prompt optimization & token accounting Cloud (AWS): Bedrock · EC2 · S3 · SageMaker AI · IAM · DynamoDB ML & MLOps: LightGBM · scikit-learn · feature engineering · MLflow · Docker · GitHub Actions (CI/CD) · model monitoring Backend & Data: Python · SQL · FastAPI · Pydantic · PostgreSQL · SQLAlchemy · pandas · NumPy Visualization: Plotly Dash · Tableau · Power BI


📫 Reach Me

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  1. Benefit-Explorer Benefit-Explorer Public

    Ask and compare insurance products with a full-stack RAG assistant powered by hybrid retrieval, reranking, streaming answers, and verified citations.

    Python 1

  2. Skewless Skewless Public

    Interactive demo of training-serving feature skew. Shows how duplicated feature logic causes silent failures — and how a shared transformation eliminates them.

    Python 1

  3. AgentFlow-Support AgentFlow-Support Public

    Python 1

  4. airport-delay-propagation-analytics airport-delay-propagation-analytics Public

    Analyzing how flight delays propagate through U.S. airline operations using BTS 2024 flight-level data, PostgreSQL, and Plotly Dash.

    Python 1