Alejandro Laguna

My digital corner — science, code, thoughts.

About

Guilty of having too many interests and being unable to focus on a couple of them and making notable progress. Currently a second-year computer science student at the European Institute of Technology, and Software Engineer Intern at Migalabs

Get in Touch

Education

Experience

Software Engineer Intern

MigaLabs, July 2025 - December 2025, Barcelona (Spain)

  • Built monitoring tools to keep tabs on over a terabyte of Ethereum blockchain data - quality control at scale
  • Designed validation systems that could handle different network upgrades, since each fork had its own rules to follow
  • Worked the company's main dashboard using Next.js, turning complex blockchain data into something the team and customers could actually understand
  • Studied deep the Ethereum specifications to figure out what "correct" data should look like across different network phases (phase0, Altair, Bellatrix, Capella...)

Go • Next.js • Tailwind CSS • Ethereum

Full-stack Developer

Avantiam Inc, September 2023 - August 2024, Figueres (Spain)

  • Built a multitenant company management platform from the ground up - one codebase serving over 100 local companies
  • Developed HR tools, task management, and time tracking features that teams actually ended up using
  • Worked with Laravel and Livewire to create real-time interfaces that felt responsive and modern
  • Dealt the challenge of building productivity tools that didn't feel like corporate bloatware

Laravel • PHP • JavaScript • Livewire • Alpine.js • Tailwind CSS

Backend Developer Intern

Niblu Group, Summer 2023, Maribor (Slovenia)

  • Spent a summer in Slovenia through Erasmus+, working on an e-learning platform while navigating a new country alone at 17
  • Built course delivery systems using FastAPI and Next.js, focusing on making educational content engaging
  • Got hands-on experience with AWS and Docker, learning how to deploy properly instead of just making things work locally
  • Collaborated on tools designed to make learning more accessible. It felt meaningful beyond just writing code

Next.js • FastAPI • Python • Tailwind CSS • AWS • Docker

Tools I Use

Languages: C, Go, Python, Javascript/Typescript, PHP
Frameworks & Libraries: Astro, React, Preact, NextJS, Vue, NuxtJS, Express, FastAPI, TailwindCSS
Databases: MongoDB, PostgreSQL, MySQL/MariaDB, ClickHouse
Tools: Git, Bash, Linux, LaTeX, Typst, Neovim

Projects, posts, thoughts...