slurp
@open-sourceAI Dev Tools
Solo Build · 2026
CLI tool that reads codebase graphs and selects optimal subgraphs for LLM queries using PageRank + TF-IDF. Zero LLM calls. Ships an MCP server and HTML visualizer.
Juan Carlos Vallejo Ruiz / Full-Stack Dev & AI Builder
I build things with AI — tools that solve real problems, automate the tedious, and make developers' lives a little less painful.
Passionate about turning ideas into products, fast. If you have something worth building, let's talk: juancarlosvallejo3@gmail.com
About
Started in 2019 at NTT DATA, building evolutivos for La Caixa and Generalitat de Catalunya with Java, Spring Boot, and Docker. Moved to Profile in 2022 maintaining insurance management tools in Java, then joined Fervimax Group in 2023 as Full-Stack Developer — migrating a medical tool to a new stack while keeping the live version running.
Somewhere along the way I got obsessed with AI — not the hype, but the practical side: tools that actually work, automations that save real hours, products built by one person that feel like a team made them.
Now I build my own things: PrismaStats, ArcIntelligence, DebugDuck, slurp. Each one solving a problem I had, or a problem worth having.
Master's in Big Data & AI in Sport at UNISPORT — completed March 2026.
Selected works
CTRL+ALT+DESTROY
@personalMultiplayer AI Security Game
Solo Build · 2026
Multiplayer prompt-injection dueling game. Each player defends a ship protected by a custom system prompt hiding a secret word — attackers get 5 conversational turns plus one final guess to crack it. Built a full duel loop, shop with power-ups, three-tier daily challenges via GitHub Actions, leaderboards, and public replay with server-side secret redaction.
DebugDuck
@open-sourceDeveloper Tools
Solo Build · 2026
Tamagotchi-style rubber duck debugger for your desktop. Local AI via LM Studio, mood system, cruelty slider, 11 arcade mini-games. Because debugging alone is sad.
PrismaStats
@personalFootball Analytics SaaS
Founder & Solo Dev · 2026
Analytics platform for football clubs. GPS/EPTS hardware integration, tactical board with AI suggestions, video analysis with YOLOv8 + BoT-SORT. Built to land a role at a professional club.
ArcIntelligence
@personalIndustrial Robotics
Solo Build · 2026
Desktop Python app integrating RoboDK with Claude API to automate MIG/MAG robotic welding programs. Reduces manual programming time from hours to minutes.