Things I've designed, built, and shipped.

Personal Intelligence Dashboard

A multi-agent intelligence dashboard with local document RAG and a runtime context manager.

• Multi-agent Electron desktop app integrating local document RAG and web intelligence.
• Hybrid RAG pipeline (semantic + keyword) for context-aware AI responses.
• Real-time Context Manager that improves agent relevance across research and analysis tasks.

Voice-controlled · on-device AI

An ESP32-S3 robot that listens, sees, and chases - fully on-device TinyML, no cloud round-trip.

• TinyML keyword spotting on ESP32-S3 for real-time voice recognition.
• FOMO object detection on ESP32-CAM with ultrasonic obstacle avoidance.
• Finite state machine + PID-controlled navigation for precise movement and stopping.

Bangla maternal-health companion

A Bangla voice-first maternal-health companion for mothers, CHWs, and families.

• Led a Bangla voice-first platform across mother, doctor/CHW, and family workflows.
• Citation-grounded RAG/GraphRAG with HyDE, reranking, and fine-tuned query classification.
• Rules-first danger-sign triage, ML risk scoring, and human escalation paths.

Protective friction before regret

Every app makes you act faster - Stayhand makes you act better, adding friction only when risk is high.

• SEND, BUY, and REPLY surfaces that intercept emotional messages, urgent purchases, and tense replies before they cause regret.
• Deterministic signals decide when friction appears; Gemini generates explanations, safer alternatives, and reflection prompts.
• Graceful fallback to deterministic suggestions when no AI key is present - the product still works.

2D grid-based algorithm simulator

A modular C++ framework that turns abstract algorithms into observable behavior on a live 2D grid.

• Pathfinding suite: A*, Dijkstra, Dynamic A*, Bellman–Ford, and Greedy Best-First Search.
• Learning-based navigation: Ant Colony Optimization and Q-Learning grid navigation.
• Geometry and world dynamics: Bresenham line-of-sight and Conway's Game of Life cellular automata.