Diego Hernández

Diego Hernández

IT Technician - Apps Developer

Specialized in full-stack web development with experience in React, Node.js, Next.js, Angular, and mobile technologies (Android). Always eager to learn and develop new ideas.

5+
Years of Experience
22+
Completed Projects
13+
Frameworks & Tech Tools Mastered
500+
Cups of Coffee ☕☕

About me 👽

High Degree in Multiplatform Apps Development (FPGS DAM) and one-year Bootcamp training as a Full-Stack Developer. Experience in developing complete web applications, both backend and frontend, as well as mobile applications, for businesses, institutions, and personal projects. Additionally, I have experience in Windows/Linux system administration and incident resolution, including basic cybersecurity tasks. I also have experience providing software and hardware technical support.

My Projects

A selection of my most recent work and projects I have been involved in

IT APP | Italian Trattoria®
IT APP | Italian Trattoria®
Complete mobile app for a restaurant chain with ordering system, push notifications, and admin panel.
Kotlin
Firebase
XML
Room
Fragmentation
Grupo Nexcom® | Business Portal
Grupo Nexcom® | Business Portal
Web platform for Grupo Nexcom with project, task, and internal communication management. Real-time information for visitors and clients.
Next.js
TypeScript
Tailwind CSS
Strapi CMS
Ubuntu (Server)
Torrestock | Platform for business opportunity fair in Torrejón de Ardoz
Torrestock | Platform for business opportunity fair in Torrejón de Ardoz
Development of official municipal event web pages with content management system.
Next.js
TypeScript
Tailwind CSS
Strapi CMS
Ubuntu (Server)
SM Pérez Abogados | Law Firm Website
SM Pérez Abogados | Law Firm Website
Professional website for a law firm with service information, contact, and blog.
Next.js
Tailwind CSS
TypeScript
Strapi
SQL
Next.js
NexManager | Sticker game for Android devices
NexManager | Sticker game for Android devices
Sticker game for Android with collection management system and virtual store.
Kotlin
Firebase
Android Studio
Room
Jetpack Compose
WhataDuck! | Buy / Sell second-hand items
WhataDuck! | Buy / Sell second-hand items
Buy and sell second-hand items, but with lots of ducks. Come and explore WhataDuck! 🦆🦆
React JS
Bootstrap
MongoDB
Render
reCAPTHA
Cloudinary
Meesh Social | Youth Social Network (Under renovation⚙️)
Meesh Social | Youth Social Network (Under renovation⚙️)
Youth social network with real-time chat, multimedia posts, and following system.
PHP
MySQL
CSS3
JavaScript

Work Experience

System Operations Technician
Auchan Retail SpainFull-time
[04/2026 – Present]
Madrid, España
  • Monitoring of systems and services.
  • Diagnosis and resolution of technical incidents.
  • Management of backups and restorations.
  • User, permissions, and access management in different environments.
  • Elaboration of technical documentation, procedures, and configurations.
  • Network configuration, ports, DNS, and services.
IT Technician (Helpdesk)
El Corte Inglés GroupTemporary Contract
[03/2026]
Madrid, España
  • Configuration and deployment of computer equipment using MDM management tools.
  • Installation and maintenance of corporate applications and security solutions (antivirus, protection policies, etc.).
  • Diagnosis and resolution of technical issues, both hardware and software.
  • Creation and updating of technical documentation, procedures, and configurations.
IT Technician
Offshore TechContract for work or service
[02/2026]
San Fernando, Madrid, España
  • Configuration of mobile devices using MDM tools for a proyect from Grupo Renfe.
  • Installation of corporate applications and security tools (antivirus).
  • Diagnosis and resolution of technical issues in hardware and software.
  • Configuration and maintenance of computer equipment.
IT Support Technician
Grupo NexcomFreelance
[12/2025 – 02/2026]
Torrejón de Ardoz, Madrid, España
  • Technical support and troubleshooting in Windows/Linux environments.
  • System administration and maintenance.
  • Management of services, users, permissions, and access.
  • Diagnosis and resolution of technical problems.
  • Configuration of networks, ports, DNS, and services.
  • Optimization of cybersecurity parameters.
Apps Developer
Grupo NexcomInternship
[03/2025 – 05/2025]
Torrejón de Ardoz, Madrid, Spain
  • • Web application development using React and Angular.
  • • Implementation of responsive interfaces with HTML, CSS, and JavaScript.
  • • Backend development with Java (Spring Boot).
  • • Integration of REST APIs and data management.
  • • Collaborative work with Git version control.
  • • Maintenance and improvement of existing functionalities.

Education and Training 🖥️

Higher Degree in Multiplatform Application Development
Salesian Training Center "Las Naves"
2023 – 2025
Alcalá de Henares, Spain
Level 5 EQF-MEC
Full Stack Web Development Bootcamp
KeepCoding Tech School
2022 – 2023
Madrid, Spain
Intensive Bootcamp
Technical Baccalaureate - ICT Technical Area
Salesian Institution Don Bosco
2019 – 2022
Quito, Ecuador
Level 4 EQF-MEC

Technical Skills

TypeScript
JavaScript
React JS
Angular
Next JS
Node JS
PHP
Java
Kotlin
Jetpack Compose
XML (Android)
Room (Android)
Python
C++
SQL
NoSQL
MongoDB
Firebase
Git
GitHub
Linux (Server)
Power BI
Office
Adobe Photoshop
Adobe Illustrator
Render
Vercel
AI Tools

Languages 🗣️

English
B2
German
B1
Spanish
Native

Contact me! 😺

Do you have a project in mind or want to get in touch? Fill out the form below and I will respond as soon as possible.

Email

diegohs1503@gmail.com

Phone number

(+34) 682681001

Location

Alcalá de Henares, Spain