Agentic AI copilot for family caregivers. 3-model LangGraph pipeline: Router (Qwen3-8B) classifies intent, Generator (GLM-4.5-Air) runs tool-calling loops for drug interaction checks, symptom triage, vitals logging, and episode tracking via RxNav/OpenFDA, and Verifier (Qwen3-30B) independently validates every clinical output before delivery. Hybrid dense+sparse RAG using BGE-M3 embeddings over Qdrant.

Multi-agent clinical decision support system. LangGraph supervisor orchestrating 4 parallel specialist agents: guidelines retrieval, drug interaction, patient history, and synthesis. RAG pipeline over ADA, ACC/AHA, and NICE clinical guidelines using ChromaDB with dual-layer guardrails. FHIR R4-compatible mock EHR integration. Sub-5s end-to-end latency.

Full-stack AI health platform that transforms bloodwork PDFs into personalized nutrition recommendations. Pipeline chains Tesseract OCR for lab report extraction, Python rule-based classification engine for 20+ biomarkers, and Claude API + Gemini for recommendations. MCP-based browser agents autonomously build grocery carts on Instacart and Walmart.

RAG-powered financial document analyzer. LangChain orchestrates chunking, embedding, and retrieval over ChromaDB vector store for grounded LLM answers across multi-document financial corpora. Evaluation pipeline measuring retrieval precision and answer faithfulness. Summarization, sentiment analysis, and cross-document comparison modules.

Real-time NYC transit assistant with AI-powered chatbot. LangChain and Gemini agent with structured tool calling for route lookup, live alert retrieval, and accessibility queries. RAG pipeline over structured MTA datasets with prompt optimization. Live React dashboard with Firebase real-time sync.

Full-stack course bidding platform serving 1,500+ students. React/TypeScript frontend with real-time enrollment tracking. Java/Spring Boot backend on AWS with JWT/OAuth auth. Round-based bidding logic with FCFS tie-breaking via MySQL stored procedures. Session caching sustaining 1.5K concurrent users at p95 latency under 300ms.

Distributed banking platform built as a microservices system. Spring Cloud Config for centralized configuration, Eureka for service discovery, Gateway for routing. OAuth2, OpenID Connect, and Spring Security for auth. Resilience4J circuit breakers. Kafka and RabbitMQ for async event-driven messaging. Docker/Kubernetes deployment.

ML anomaly detection system on real NASA spacecraft telemetry data. Isolation Forest, statistical thresholding, and PyTorch-based sequence classifiers applied to time-series sensor streams. Data preprocessing pipeline in Pandas and NumPy. Model benchmarking on precision and recall across failure patterns. Streamlit dashboard for real-time visualization.

User-level threading library on the xv6 OS kernel. Thread control blocks, stack allocation, cooperative scheduling, and assembly-level context switching entirely in user space. Synchronization primitives and fault isolation mechanisms handling memory protection across concurrent execution contexts.

Concurrent hash table synchronization analysis in C. Diagnosed race conditions, read-modify-write hazards, and cache coherency issues across up to 250 concurrent threads. Benchmarked global mutex, spinlock, and fine-grained lock striping with per-bucket reader-writer locks. Zero lost keys across all implementations.