Available for opportunities

Hi, I'm rubén .

Software Engineer — Barcelona, Spain

I build APIs, connect services and turn manual workflows into web tools — with Java, Spring Boot and React.

Say hi! Read my CV
01

Experience

Professional timeline

Software Engineer @ Egarsat

September 2022 - Present · 4 years

On-site

Full-stack development with Java and Spring Boot on the backend and React with TypeScript on the frontend. REST APIs for service communication, batch processing, and Liferay portal customization.

  • Full-stack development with Java + Spring Boot on the backend and React + TypeScript on the frontend.
  • Design and implementation of REST APIs for inter-service communication.
  • Batch process development for automated data processing.
  • Liferay portal customization and portlet development.
  • Containerized deployments with Docker.

Team Supervisor @ Taco Bell

May 2021 - September 2022 · 1 year and 4 months

On-site

Leadership of a dynamic team, optimizing task assignment and workflows to maximize operational efficiency during high-demand peaks.

  • Led dynamic team operations, optimizing workflows during high-demand periods.
  • Handled task assignment and resource management for maximum efficiency.
  • Leadership
  • Team Management
  • Operations

Software Developer (Internship) @ Universitat Rovira i Virgili

October 2021 - May 2022 · 7 months

Remote

End-to-end development of the research portal "The Mutational Landscape of SARS-CoV-2", from design conception to production deployment. Interdisciplinary work between software engineering and bioinformatics.

  • End-to-end development of "The Mutational Landscape of SARS-CoV-2" research portal.
  • Interdisciplinary collaboration between software engineering and bioinformatics.
  • Full lifecycle ownership: design, development, testing, and production deployment.

Systems Technician (Internship) @ BEEP

October 2019 - June 2020 · 8 months

Technical support and maintenance of IT systems and infrastructure.

  • Provided technical support and supported IT infrastructure maintenance.
01.2 // Showcase

Featured projects

View all projects on GitHub →

Personal PortfolioAstro / Tailwind CSS / TypeScript

Source code
02

About & Education

02.1 // Profile & mindset Purpose-driven engineering
ruben.workspace
identity.json

$ cat identity.json

Clear systems, sound decisions, and software that reaches production.

Full-Stack Developer with solid experience in the Java ecosystem. I focus on transforming complex problems into efficient, scalable, and robust solutions for large-scale projects. I build backend services with Spring Boot and interactive frontends with React, with a track record in REST API design, batch processing, and Liferay portal development. My goal is to deliver value through clean code and high performance.

{
  "role": "Software Engineer",
  "location": "Barcelona, Spain",
  "focus": "APIs, service integrations and web tools for everyday workflows.",
  "mindset": "Systems thinking, constant iteration, and obsession with detail."
}
$
02.2 // Academic foundations

Academic Background

Universitat Oberta de Catalunya (UOC) February 2026 - Present
In progress · Current

Bachelor's Degree in Computer Engineering

Formalizing the foundations of software engineering. Strengthening the theoretical base in system architecture, algorithms, design patterns, and development methodologies.

INESEM Business School June 2025 - December 2025
🏆 Outstanding
Instituto la Guineueta 2018 - 2022 · 2 programs
2020 - 2022

Web Application Development (DAW) — Bioinformatics Specialization

Intensive higher education in software development. Application of a wide range of technologies to build complex solutions in real-world environments.

2018 - 2020

Microcomputer Systems and Networks (SMX)

Fundamentals of systems infrastructure, networking, and technical support.

01 / 03
02.3 // Verified credentials

Official Certifications

● Anthropic 2026-01
Credential ID: 7h7wd7qewuw8

Claude Code in Action

Advanced prompt engineering, agentic workflows, and code automation with Anthropic LLMs.

Verify official credential ↗
● Udemy 2021-05

Python & JavaScript Master

Two complementary Udemy learning paths: Python for automation and analysis, and modern JavaScript for interactive web experiences.

Verify Python ↗ Verify JavaScript ↗
● Fundación Esplai 2021-07

Java Junior Developer

Enterprise Java foundations, OOP, data structures, and backend development with version control.

Verify official credential ↗
01 / 03
03

Outside the Code

Life, sports, travel — the things that shape how I think.

About Me

Climbing, via ferratas, world journeys, sunsets, and the moments that happen away from the screen.

Tap to flip · Drag to arrange
Sitting on a stone wall at dusk, looking out over Los Balbases (Burgos) with its church on the hill and wind turbines along the horizon.

Los Balbases, Burgos

somewhere between places

Standing by the Thames on a grey winter day, with Tower Bridge behind me.

London, United Kingdom

grey skies, tower bridge

Leaning against a stone wall inside the Colosseum, looking away from the camera under a heavy sky.

Rome, Italy

history carved in stone

Walking down a palm-lined avenue in the late afternoon light, seen from behind.

Mallorca, Spain

palm trees, sea breeze

Climbing an indoor climbing wall mid-route, roped in and reaching up for a hold, seen from behind and below.

Barcelona, Spain

chalk on my hands

Standing on a fortress rampart above Granada, arms spread wide, overlooking the city and the mountains beyond under a bright blue sky.

Granada, Spain

arms out over the city

Hobbies // travel · climbing · markets · keyboards

Mechanical keyboards

Mechanical keyboards are a hands-on hobby: each build balances layout, materials, switches, sound, and feel. This is not just a desk accessory; it is a tool tuned around how I think and work.

The speed trial shares that obsession with feedback. The Build Photos explorer documents each keyboard layer by layer, from the case to the switch.

Hobby log 01 // keyboards Online
Switch profile:
Audio feedback:
KILLUA ⚡

"You think you can type faster than my Godspeed lightning? Let's see your WPM!"

WPM: 0 Accuracy: 100% Streak: x0
⏱️ 30s
HHKB layout · 60% Linear switches · 45g
04

Contact

Available for new opportunities

A manual workflow or disconnected systems?

Tell me what your team does today and where it gets stuck. I can help define and build the API, integration or web interface you need.

Signal received // channel open

Send the workflow, the systems involved and the outcome you need. We can start with scope and technical constraints, not a promise of results without context.

Email route // ready: rmartbernabe@gmail.com
Write to me
Location & time

Barcelona · Spain

UTC+2 --:--:-- CEST
LinkedIn // Network
in/rubenmartinezbernabe
Let's connect professionally
GitHub // Repositories
github.com/rubenitx
Check out repositories & code
Looking for a full printer-ready summary? Read my CV