You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Sergio HernandezSH

Sergio Hernandez

Software Engineer | Web Full Stack Developer | IT

€250/day
6 projects
Madrid, ES
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
Back to original language

About Sergio

Computer Engineerwith over 15 years of experience in Full Stack development (frontend and backend) using technologies such as PHP, Laravel, JavaScript (ES6), C#, Java, Vue.js, Node.js, React, WordPress....

Experience in project management, database design and analysis, flowcharts, and design patterns (DAO, Factory, MVC, Singleton, Observer, among others), ensuring functional and well-structured applications.

I have developed:

-Web applications: with Java, C#, Laravel + Vue.js, Node.js + React.
-Desktop applications: with C#.
-Hybrid mobile applications: with Apache Cordova.
-Complete stacks: MERN and MEVN.

Outstanding experience in UX/UI (Material Design, Bootstrap, Materialize, Material UI, Vuetify), databases (Oracle, SQL Server, SQLite), and application servers (Tomcat, Apache).

I have worked on large projects, such as at Indra (7 years), developing mobile and web applications for railway incident management. Ideauto + DGT....
I have also created customer and customization management applications in WordPress.

I am passionate about learning new technologies and facing challenges that drive my skills.



  • Spanish

    Native or bilingual

  • English

    Fluent

Can work on-site
Madrid (up to 50km)

Experience

  • Axisaudiovisualresearch
    Consultant - Senior Advisor
    ENTERTAINMENT AND LEISURE
    October 2023 - Today (2 years and 9 months)
    Madrid, Spain
    ● Development of a web application for an art gallery (private section, user management and favorite lists, backend part.....) and a custom application for simulating artworks on walls.
    ● Database design and implementation in MySQL engine
    ● All in React.js and Node, under the semantic UI visual framework.
    React.js Node.js JavaScript Express Database Design
  • Roller center
    Development of the new RollerCenter website
    ENTERTAINMENT AND LEISURE
    July 2023 - October 2023 (3 months)
    Madrid, Spain
    Complete development and design of the new Rollercenter.es website, under Wordpress. (rollercenter.es)
    JavaScript Wordpress PHP
  • Novabase - Neotalent
    Consultant – Senior Advisor
    PRESS AND MEDIA
    February 2023 - July 2023 (5 months)
    Development for Vocento, of improvements and new functionalities for their different
    websites, for the upcoming elections (graphics, data, improvements, and bug fixes).
    All in React.js, along with the recharts graphics management framework.
    JavaScript React.js

Reviews

4.7

Out of 3 ratings

JoelJ

Joel

Startion Group S.L.

Reviewed on 4/4/2022

We have worked with Sergio to develop an extension of a mid-sector application implemented with ReactJS along with Kumbia PHP and we are delighted to have had him for this project. Communication has been fluid at all times and he has met delivery times perfectly. We will definitely count on Sergio again for future projects.
E

Esther

WEDDING STYLE MAGAZINE

Reviewed on 7/2/2021

Recommendations

FU
Josué RodríguezJR
GS
+2
Former user and 4 other people have recommended Sergio

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • Technical Engineer in Computer Systems
    Polytechnic University of Madrid
    2004
    Todo lo que se supone das en una ingeniería informática

Skill set

Categories