Hello, I'm Alvin
AI Engineer · Developer Tools · Full-Stack
Building LLM agent systems, developer tools, and full-stack AI applications. Scroll for selected work, or jump to Projects.
Alvin Xu
Software engineer focused on AI agents, retrieval, and developer tools.
Education
Technical toolkit
- CiteLoom: Plan-Execute agents, two-stage retrieval, and an MCP inspection server.
- NeuralLens: local model inference, layer observations, and A/B comparisons.
- Evaluate retrieval with NDCG and MRR, and measure cost and variance across agent runs.
- Record design decisions and verify changes with end-to-end browser tests.
Selected work
All projectsInvestment Platform — Full-stack Web & Android
Compare stocks against SPY using provider-supplied price history, then simulate trades in a paper portfolio.
6-DOF Robotic Arm — Motion Planning & Control
Motion planning + localization framework (RRT trajectory planning, MCL with LiDAR) and grasping (TSR-based IK sampling + Jacobian methods), validated on both RViz simulation and a real robotic arm.
End-to-End NLP Pipeline (Classical ML → Transformers)
Sentiment, POS, and NER pipelines on Amazon Reviews and CoNLL-2003. Benchmarked classical ML (SVM, HMM, LR) against neural models (Word2Vec, GloVe, BiLSTM, GRU, Transformer); BiLSTM+GloVe reached 88% F1 on NER.
Independent work in language learning, research, and model observability.
Explore Labs