Portfolio · 2026

Javier E.

Computer Science Engineer. León, ES.

About

Hi, I'm Javier. I recently graduated with a degree in Computer Science at the Universidad de León. Throughout the degree I've grown an interest in building practical, careful software — things that hold up when real people use them.

I like collaborative environments where ideas turn into shipped work, I'm comfortable stepping outside my comfort zone, and I treat learning as a side-effect of solving real problems rather than a goal in itself. Lately most of my time goes into mobile and systems. I'm also focusing and learning about the cloud.

Experience

  1. Oct 2025 — Dec 2025

    Application Developer Intern · Proconsi

    • — Built practical foundations in Kotlin while contributing to mobile work.
    • — Worked with Jetpack Compose and a Kotlin Multiplatform project.

Stack

Frontend

Backend

Mobile

Database

Ops

Projects

FlickEm app icon

Live · App Store

FlickEm

iOS Photo Manager

Native iOS app for cleaning out the photo library through a Tinder-style swipe. Quick keep / delete decisions, reclaiming storage without the friction. Built entirely with Swift and SwiftUI; everything runs on-device.

  • Swift
  • SwiftUI
  • iOS
View on the App Store

Live

Fernandez Fitness

Client work

Personal trainer landing page

Lead-generation landing page built for a personal trainer to capture 1-to-1 coaching inquiries. Custom contact form integrated with Resend delivers submissions straight to the client's inbox. Testimonials managed by the client through a Sanity CMS, so content updates require zero developer involvement. Minimal black-and-white aesthetic, mobile-first, deployed on Vercel with analytics.

  • Astro
  • Tailwind
  • TypeScript
  • Sanity
  • Resend
  • Vercel
Live site

In progress · Bachelor thesis

Fridgey

Cross-platform food waste tracker

Android + iOS app built with Kotlin Multiplatform that reduces food waste by automating expiry tracking. ML Kit Text Recognition scans dates, ML Kit Barcode Scanning + the Open Food Facts API identify products, SQLDelight stores everything locally, and notifications + widgets keep an inventory shared across users in sync.

  • Kotlin
  • KMP
  • Compose Multiplatform
  • SQLDelight
  • ML Kit
  • WorkManager

In progress

NotchSense

Native macOS notch utility

Native macOS app that adds functionality to the MacBook notch. An NSPanel sits on top of the notch with auto-detected dimensions per Mac model, expanding on hover and collapsing softly as the cursor moves away. Tuned to feel like it ships with the OS.

  • Swift
  • SwiftUI
  • AppKit
  • macOS

Contact

I'm always open to interesting work and conversations. The fastest way to reach me is email, but pick whichever you prefer.