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HELLO, I'M

Diego
Barreiro Pérez

Software Engineer

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01. About Me

I'm a software engineer who enjoys building scalable systems and platforms that make a real impact. My journey started in 2017 when I launched Kodular as a high school side project - what began as a simple drag-and-drop app builder has since helped over 2 million people create Android apps without writing code.

These days, I'm working at Amazon in Dublin, designing distributed systems that handle massive scale. I've had the chance to work on everything from no-code platforms to university scheduling algorithms, and even spent a summer contributing to MIT App Inventor through Google Summer of Code.

I'm particularly interested in cloud architecture, developer tools, and education technology. When I'm not architecting systems or debugging production issues, you'll find me exploring new AWS services, contributing to open-source projects, or helping students get started with programming.

Recent technologies I've been working with:

  • Java
  • Python
  • React
  • TypeScript
  • AWS
  • GCP
  • Docker
  • PostgreSQL
  • Django
  • Android
Diego Barreiro Pérez

02. Where I've Worked

03. Some Things I've Built

Kodular

Featured Project

Kodular

A comprehensive drag-and-drop platform that democratizes mobile app development, enabling anyone to build Android apps without writing a single line of code. What started as a high school side project in 2017 has evolved into a full-fledged company with strategic partnerships including Google.

Built with Java (GWT) and Python (Django) on scalable cloud infrastructure, Kodular has powered over 2 million apps created by developers worldwide, proving that sophisticated development tools can be accessible to everyone.

JavaPythonAndroidGCP
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Protección Civil Platform

Featured Project

Protección Civil Platform

A comprehensive digital transformation solution for civil defense operations in Santiago de Compostela. This dual-platform system includes an internal resource management tool and a public-facing website, completely replacing decades-old paper-based workflows with an intuitive web-based system.

Built with Java and React, the platform features real-time resource tracking, volunteer coordination, and emergency response workflow automation. What began as a volunteer project during my International Baccalaureate has grown into critical infrastructure serving the local community.

JavaReactAzure
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University Timetable Solver

Featured Project

University Timetable Solver

An intelligent scheduling system developed as my final thesis project that tackles the notoriously complex Curriculum-Based Course Timetabling problem. The platform combines a powerful constraint-solving engine using Answer-Set Programming (ASP) with Clingo, wrapped in a user-friendly React interface.

Architected as a fully serverless solution on AWS using Lambda, DynamoDB, and S3, the system handles intricate university scheduling constraints from room capacities and teacher availability to course prerequisites and student preferences. The solving algorithm is open-source, contributing to academic research in automated scheduling.

PythonReactASP/ClingoAWS
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04. What's Next?

Get In Touch

While I'm not actively looking for new opportunities right now, I'm always happy to connect with fellow developers, discuss interesting projects, or chat about technology. Feel free to reach out!

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