Alan Reyes

Computer Science @ WashU

CS major at Washington University in St. Louis building AI systems and full-stack web applications — from serverless RAG agents to production client apps.

About

I'm a computer science student at Washington University in St. Louis focused on AI systems and full-stack software engineering. I've designed RAG systems for enterprise workflows, migrated legacy Java applications to Spring Boot, and built production web applications for real clients.

My research experience includes engineering a searchable database of all 50 states' laws and fine-tuning language models to produce structured output. I'm interested in building reliable software that makes complex information easier to use.

Experience

Software Engineering Intern, AI R&D

May 2026 – July 2026

Enterprise Mobility · St. Louis, MO

  • Designed the architecture for a proposed internal RAG system to guide employees through software and technology request workflows on company-managed devices.
  • Conducted cross-functional discovery with multiple internal teams to map approval processes, policy constraints, user pain points, and enterprise edge cases for AI-assisted request guidance.
  • Contributed to the migration of a legacy Java permissions application to Spring Boot, helping preserve cross-application access control behavior while reducing technical debt.
  • Java
  • Spring Boot

Software Engineering Intern

Oct. 2025 – May 2026

Nomad eCommerce · St. Louis, MO

  • Developed, tested, and debugged over 30 client web applications across the full stack using React, Node.js, and SQL, redesigning database schemas that cut page load times from 3 seconds to under 1 second.
  • Built a custom checkout flow generating $4M in monthly revenue, architecting the feature end-to-end from technical design through deployment.
  • Diagnosed and resolved dozens of production bugs with same-day turnaround, earning positive client feedback for responsiveness and reliability.
  • React
  • Node.js
  • SQL
  • Express.js

AI / LLM Research Assistant

Jan. 2025 – Aug. 2025

Washington University in St. Louis · St. Louis, MO

  • Engineered a RAG pipeline in Python over a 50,000+ document dataset consolidating all 50 states' laws into a single searchable database, letting researchers query natural-language questions instead of manually cross-referencing scattered statutes.
  • Deployed models using Hugging Face Spaces and implemented light fine-tuning alongside post-inference processing to enforce structured, reliably parseable output for researchers.
  • Python
  • Hugging Face
  • RAG
  • Fine-Tuning

Projects

The Tech Digest

  • Architected a scalable serverless RAG agent (AWS Bedrock, LangGraph, FastAPI) with scale-to-zero infrastructure, enabling live streaming of reasoning steps to a Next.js UI via Server-Sent Events.
  • Engineered a self-extending memory system that cross-corroborates web sources before citations, persisting verified data to a Pinecone vector index and AWS S3 to ensure highly accurate, hallucination-free repeat answers.
  • Developed a staleness-aware retrieval system that escalates outdated queries to live web search, supported by an automated scraping pipeline covering 50+ RSS feeds with local Llama 3.1 scoring.
  • Python
  • AWS (Lambda, Bedrock, S3, SAM)
  • LangGraph
  • Pinecone
  • FastAPI
  • Next.js

BetterTyping

  • Developed and maintained a full-stack React and Node.js typing test application, scaling the platform to support 5,000+ completed sessions across 150+ active users.
  • Implemented secure authentication, session management, and interactive performance visualizations, allowing users to track speed and accuracy trends over time.
  • JavaScript
  • React
  • Vite
  • Node.js
  • Express.js
  • MongoDB
  • Railway

Skills

Languages
Java · Python · JavaScript · C/C++ · SQL · HTML/CSS · Swift
Frameworks/AI
Spring Boot · React · Next.js · Node.js · Express.js · LangChain · LangGraph · LlamaIndex
Libraries
Django · Flask · Pandas · NumPy
Databases
PostgreSQL · MongoDB · SQLite · ChromaDB · Pinecone
Tools & Practices
Git · Docker · AWS · CI/CD · Postman · Figma · Agile/Scrum · Unit Testing · Debugging

Education

Washington University in St. Louis

Aug. 2024 – May 2028 (Expected)

Bachelor of Science in Computer Science | GPA: 3.42

Contact

I'm open to internships, research, and interesting projects. The fastest way to reach me is email at alanreyes6747@gmail.com, or find me on GitHub and LinkedIn.

Opens your email app with the message pre-filled.