All Selected Work

Graduation Capstone Thesis at DUT: Tamper-proof diploma verification on Ethereum Sepolia testnet combined with a local RAG assistant.

• ↳End-to-end diploma issue, verify, and revoke workflows (admin management + zero-barrier public verification)
• ↳SHA-256 document hashes stored on Sepolia as compact bytes32; decoupled React, Node.js/Express, MongoDB, and FastAPI services
• ↳Local RAG pipeline (FAISS + Qwen 2.5 via Ollama) over institutional docs for grounded answers with page citations

Shipped web application (since taken offline) featuring streaming Server-Sent Events, constrained Gemini API integration, and DigitalOcean production deployment.

• ↳Shipped full product to production on DigitalOcean and operated live with real user traffic
• ↳Owned production basics: multi-stage Docker containerization, Nginx reverse proxy, Cloudflare SSL, and env/secrets isolation
• ↳Treated LLM as a constrained system component: real-time SSE streaming, structured prompt boundaries, and output truncation handling

An intelligent, text-based interview preparation platform powered by Active Recall & Spaced Repetition (SM-2).

• ↳Live production platform with active users for interview retention
• ↳Customized SuperMemo-2 (SM-2) algorithm mapped to 3-tier recall model
• ↳Full-stack Next.js App Router with Server Actions & Prisma on PostgreSQL

An AI-powered financial application built as a full-stack web product.

• ↳Full-stack web application for financial analytics
• ↳Interactive data visualization and risk dashboards
• ↳Intelligent multi-step workflow automation with 100% type safety