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About

Hi, I'm Rubén.Most of the internet knows me as zShuck.

Rubén Pérez (zShuck)
zS '26

I'm a software AI engineer and product engineer from Barcelona. These days I spend most of my time putting AI agents into production with Claude and Gemini and turning them into products people actually use.

I also care about what happens after launch: funnels, conversion, leads, the numbers that tell you whether something works. And I work hand in hand with product designers and brand designers, so a project can go from brand to product to growth with one team.

I started at Keenfolks, building web projects for clients like MSD, Royal Canin, Ogilvy and Coca-Cola, and ended up leading the web development team as tech lead. Then I joined Factorial to work on HR software at scale. Working with international teams taught me to adapt fast to different cultures and ways of working.

Outside work I lose too many hours to strategy games and RPGs, train, and keep automating my flat. I like my software fast, honest and a little bit orange.

The story so far

  1. Ch. 01

    4Geeks Academy

    Full stack developer bootcamp and certification.

  2. Ch. 02

    Keenfolks

    Web developer, then tech lead of the web development team. Projects for MSD, Royal Canin, Ogilvy and Coca-Cola.

  3. Ch. 03

    Factorial

    Software engineer on an all-in-one HR platform.

  4. Ch. 04

    Now

    Software AI engineer and product engineer. AI agents in production, growth, and the products around them.

Character sheet

Player stats

Class
Software AI Engineer
Subclass
Product Engineer
Multiclass
Growth engineer
Party
Product & brand designers
Base
Barcelona
Languages
Español · Català · English
Alignment
Chaotic orange

Passive skills

  • Teamwork
  • Creative
  • Organised
  • Team management
  • Always learning

Side quests

  • Strategy & RPG games
  • Home automation
  • Training

Inventory

  • AI

    • Claude
    • Gemini
    • OpenAI
    • Claude Code
    • AI agents
    • Multi-agent systems
    • Tool use
    • MCP
    • RAG
    • Evals
    • LLM integrations
  • Frontend

    • React
    • Next.js
    • TypeScript
    • Tailwind CSS
    • SvelteKit
    • Vite
    • CSS-in-JS
  • Backend

    • Node.js
    • Express
    • Ruby
    • Python
    • Django
    • Flask
    • .NET (C#)
    • GraphQL
    • Apollo
    • OAuth 2
  • Data

    • PostgreSQL
    • MongoDB
    • Redis
    • RabbitMQ
    • SQL
    • TypeORM
  • Cloud & DevOps

    • AWS
    • GCP
    • Azure
    • Docker
    • Terraform
    • Nginx
    • CI/CD
    • Git
  • Growth

    • Funnels
    • CRO
    • A/B testing
    • Lead generation
    • CRM integrations
    • Analytics
    • SEO
    • GEO
  • Quality & reach

    • Cypress
    • Unit testing
    • Core Web Vitals
    • Accessibility

Achievements unlocked

Off the clock

From the camera roll

  • Flash, film, no retakes.FR 01
    Flash, film, no retakes.
  • Behind the lens for once.FR 02
    Behind the lens for once.
  • Somewhere between buildings.FR 03
    Somewhere between buildings.

Got an idea?

Let's build something with personality.

Agents, products, funnels, a whole brand or a weird experiment. Tell me about it.