About

Hi, I'm
Valentin.

19 year old developer, designer, and composer from Buenos Aires. Building things at the intersection of code, visuals, and sound.

Available for projects · GMT-3

Who I am.

I am Valentin Sierra, a 19-year-old creative from Buenos Aires, Argentina. I move at the intersection of code, visual design, and music — three disciplines that to me are not separate, but parts of the same process in building an audiovisual production.


I started programming out of curiosity and ended up fascinated by how software can be both functional and aesthetic. I am interested in projects that combine technical thinking with visual sensitivity. I am currently very interested in music composition — mainly in production — because sound has a way of communicating what code and images cannot.


Right now I am learning and building in parallel — real projects to solve, not classroom exercises. I believe the best way to grow is to make things that matter and not be afraid to publish them even when they are not perfect.

What I do.

💻 Development
HTML CSS JavaScript Python Node.js Lua
🎨 Design
Figma Photoshop Lightroom Illustrator UI/UX
🎵 Music
Composition Sound design Ableton Mixing
🧠 AI
Claude Codex Blackbox Gemini
🛠 Tools
Git GitHub Linux VS Code Vite
🌐 Languages
Spanish — native English — C2

My path so far.

26
Open Source — Garry's Mod Mods Modding · Lua

Development and publication of Garry's Mod addons written in Lua. First open-source projects with real user feedback. Developed for Semi-Sarcastic Gamers.

25
Freelance — Creative Developer Personal projects · Remote

Independent development of web projects, interface design, and game servers. Continuously evolving portfolio.

25
Project — checkers AI Uni project · Javascript

Creation of an AI for a checkers game using Minimax and Alpha-Beta Pruning algorithms. First complete artificial intelligence project. Currently on version 1.1.0.

24
Beginning — Web development and coding University

Beginning of learning in programming and web design, first year at Universidad Maimónides. Beginning of my career as an IT intern at DDAS.