Systems, platforms, and research-backed experiences that balance technical depth with clarity and usability.
An offline-first, zero-knowledge knowledge base for Windows, Linux, macOS, and Android. Notes are encrypted with SQLCipher at rest and sync device-to-device over authenticated, AEAD-encrypted WebSocket channels — no cloud, no servers. An opt-in RAG assistant answers questions across your vault with in-database vector search and fully offline embeddings.
A self-hosted AI RAG workspace. Upload PDF, TXT, Markdown, CSV, and JSON documents into isolated workspaces; a BullMQ worker queue chunks and embeds them asynchronously, then chat with your documents over a streaming WebSocket — grounded answers with cited sources from hybrid pgvector + full-text search.
A dependency-free Python CLI that watches GitHub repositories, websites, APIs, and PyPI/npm packages — and explains exactly what changed, not just that it changed. Durable SQLite history, watch mode, uptime statistics, and a safety-first updater that verifies checksums and audits every update.
An AI-assisted cryptography e-learning platform. Production-grade REST API with JWT access/refresh rotation in HttpOnly cookies, hashed refresh-token storage, and three-tier RBAC. The React frontend ships live Caesar, Base64, SHA, and RSA (WebCrypto) tools plus points, streaks, and badge analytics.
Full-cycle migration of a PHP/Laravel prototype using phased parallel-run deployment, remediating vulnerabilities for 500+ active users. Rebuilt access control, user management, and a timeline feed; ARIA-compliant, keyboard-first redesign lifted usability test scores by 60%.
A secure multi-service API for a constrained IoT device and POS backend. Service-to-service authentication (zero-trust style), payment integrations with multi-transaction management, webhook handling, failure recovery, and payment-state tracking.
A Unity VR simulator with real-time physics-based mesh slicing driven by controller Linecasts and velocity-estimated cut planes. Runtime tuned via FixedUpdate scheduling and LayerMask-scoped collisions for consistent, reproducible demos on Meta Quest.
An autonomous UAV prototype built with ROS Melodic, embedded Linux, and Python/C++ pipelines for real-time sensor fusion, disaster identification, and emergency alerting. Finalist at Smart India Hackathon 2020, competing against 1,000+ teams.
Academic projects, research studies, and explorations that complement the core engineering work.
A Beyond Real VR study that explored how immersive game mechanics could support acrophobia-related scenarios and height-fear reduction.
A human-robot interaction study using the NAO robot to examine toddler emotions, play responses, and social engagement patterns.
A usable-security case study that examined online identity-fraud experiences in banking and social media and translated the findings into safer warning patterns.
User-experience research for connected-device concepts, bridging embedded systems, hardware interaction, and product design.