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b1luu/README.md

Backend engineer, Math-CS @ UCSD (June 2026). I build event-driven systems on AWS for small-business operations.

Core

Python Java JavaScript TypeScript SQL C++ C

Backend & Data

FastAPI AWS Lambda Amazon API Gateway Amazon SQS Terraform PostgreSQL DynamoDB REST APIs Square APIs Webhooks Google Apps Script SQLite Bash CI/CD

AI & ML

RAG LangChain LangGraph LangSmith

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  1. square-inventory-automation square-inventory-automation Public

    Production serverless Square POS inventory deduction. Lambda + DynamoDB + SQS, per-merchant OAuth catalog binding, fractional-decimal recipe projection.

    Python

  2. square-merchant-rag-system square-merchant-rag-system Public

    Retrieval-first RAG: BGE embeddings, FAISS search over JSONL corpus, pluggable Ollama LLM for staff Q&A.

    Python 2

  3. repo-search repo-search Public

    Sub 200ms code retrieval with lexical ranking + import-graph reranking

    C++ 1

  4. postmortem-reports postmortem-reports Public

    Built a local tool that turns incident logs into structured postmortem reports using FastAPI, LangGraph, SQLite, and Ollama.

    Python 1

  5. emptyboard emptyboard Public

    10,000+ class scheduler for querying open classroom time windows from UCSD course data

    TypeScript 1

  6. square-loyalty-data-pipeline square-loyalty-data-pipeline Public

    Resolves fragmented Square data by building a traceable pipeline for reliable membership and purchase tracking

    Python 1

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