Backend engineer, Math-CS @ UCSD (June 2026). I build event-driven systems on AWS for small-business operations.
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22:22
(UTC -12:00) - in/brandonluu42
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square-inventory-automation
square-inventory-automation PublicProduction serverless Square POS inventory deduction. Lambda + DynamoDB + SQS, per-merchant OAuth catalog binding, fractional-decimal recipe projection.
Python
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square-merchant-rag-system
square-merchant-rag-system PublicRetrieval-first RAG: BGE embeddings, FAISS search over JSONL corpus, pluggable Ollama LLM for staff Q&A.
Python 2
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repo-search
repo-search PublicSub 200ms code retrieval with lexical ranking + import-graph reranking
C++ 1
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postmortem-reports
postmortem-reports PublicBuilt a local tool that turns incident logs into structured postmortem reports using FastAPI, LangGraph, SQLite, and Ollama.
Python 1
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emptyboard
emptyboard Public10,000+ class scheduler for querying open classroom time windows from UCSD course data
TypeScript 1
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square-loyalty-data-pipeline
square-loyalty-data-pipeline PublicResolves fragmented Square data by building a traceable pipeline for reliable membership and purchase tracking
Python 1
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