🌐 chandhan.com: case studies with live demos, and the notes behind each project.
AI Engineer. I build LLM systems end to end — multi-agent pipelines, evals, RAG, and the production infrastructure they run on. Background in reinforcement learning and robotics, so I'm comfortable anywhere between "train the model" and "ship the system."
- 🧠 LLM systems: multi-agent orchestration, adversarial evals, RAG, structured outputs
- 🤖 Applied ML: transformers from scratch, reinforcement learning, computer vision
- ⚙️ Production: Django services, AWS, Docker, Postgres, Prometheus — AI that actually ships
| Project | What it is |
|---|---|
| Project D3 — Multi-Agent LLM Evaluation | Role-specialized LLM agents — advocates, a judge, and an optional jury — score model outputs through structured adversarial debate; two eval protocols with agreement, κ, and position-bias metrics. |
| Browser Autopilot | A vision-driven browser agent: a LangGraph + Playwright loop that turns plain-English web tasks into actions and auto-generates illustrated step-by-step tutorials. |
| LLM-Triaged Security Audit | Merges 8 SAST/secret/dependency scanners into one SARIF, then a two-pass LLM dedupes, filters false positives, and runs a semantic authz/IDOR reasoning pass into a ranked report. |
| GPT from Scratch | A GPT-2-style transformer implemented from scratch in PyTorch — hand-built multi-head attention, weight tying, and a mixed-precision + gradient-accumulation training loop. |
| Reinforcement Learning — Panda Arm | A Soft Actor-Critic agent (Stable-Baselines3 + PyTorch) trained in the robosuite simulator to control a Franka Panda arm on a manipulation task. |
| Autonomous Robot Perception — TurtleBot | ROS 2 perception on a real TurtleBot: RANSAC vanishing-point detection, optical-flow obstacle stops, and a custom-trained YOLO detector driving lane-following in sim and on hardware. |
LLMs & agents: multi-agent orchestration · RAG · evals / LLM-as-judge · prompt & context engineering · function calling · MCP ML: PyTorch · Transformers · Stable Baselines3 · reinforcement learning · YOLO · computer vision Languages: Python · C++ · TypeScript · SQL Production: Django · React · PostgreSQL · Docker · AWS · Prometheus