Learn more about me

Full Stack Developer

I am a full stack developer with expertise in Ruby on Rails, capable of designing and developing complete web applications from front-end to back-end.

  • Birthday: 31 October 1996
  • Website: www.gabrielmr.com
  • Phone: +34 673 443 804
  • City: Barcelona, Spain
  • Age: 26
  • Email: ghmartinez96@hotmail.com
  • Freelance: Available
  • Open to Work: Available

I am a highly experienced professional with 8 years of experience in the chemical industry, now channeling my passion for technology as a full-stack developer. I possess strong skills in Ruby on Rails, HTML, CSS, JavaScript, SQL, Git, and Github and I am dedicated to creating high-quality, efficient and user-friendly web applications.

Happy Clients



Ruby on Rails 100%
HTML 90%
CSS 80%
SQL 80%
JavaScript 75%
Git & GitHub 90%



Data Exploration

Chemical Industry

Web Design


Chemical R+D

Artificial intelligence



I'm thrilled with the online yoga website Gabriel MR built for me. It's convenient, high-quality and user-friendly. I highly recommend them to anyone looking to have an online school. Thank you!

Pere Ibáñez

CEO & Founder of Yoga Pere

I recently had Gabriel MR build a web scraping solution for my trading robot, and it has been a game-changer. He was able to quickly understand my needs and deliver a robust, efficient solution that has greatly improved the performance of my robot.

Xavier López


We're currently working with Gabriel MR on our LGBTQ+ organization website and it's been a great experience. He understands and is committed to our cause. He is delivering a beautiful and functional website with sensitivity and inclusivity.


LGBTQ+ Association

I had a great experience working with Gabriel MR on the Indie Shopper project. He is a skilled developer with a strong technical understanding and attention to detail. He also collaborates well and made valuable contributions to the team. I highly recommend him for any development project.

Tom Kitson

Freelancer / Indie Shopper Founder


Check My Resume



Full Stack Web Development Coding Bootcamp


Le Wagon Coding School, Barcelona, Spain

Intensive coding bootcamp learning HTML, CSS, Bootstrap, JavaScript ES6, SQL, git, GitHub, Heroku, and Ruby on Rails. Designed, Implemented, and shipped to production a clone of Airbnb and a Rails prototype.

CFGS Enviromental Chemistry

2014 - 2015

Institut Narcís Monturiol, Barcelona, Spain

High Degree Technical Training, of theory and practice of environmental protection through the control of emissions into the atmosphere, waste management and water treatment. Chemical safety and industrial hygiene.

Professional Experience

Full Stack Developer Freelancer

2022 - Present

Barcelona, Spain - Remote

  • I am currently engaged in the development of an online yoga school known as Yoga Pere. This e-learning platform offers a comprehensive range of yoga classes and courses that cater to individuals of all skill levels.
  • I am also currently involved in the development of an online LGBTQ+ community platform for organizing events named QWERTY. This social platform enables members of the LGBTQ+ community to create and attend events, make new connections, and foster friendships.
  • I have previously worked on a project called Indie Shopper, an e-commerce platform that aims to promote local businesses. This online marketplace focuses on showcasing and selling products from small, independent businesses.
  • As my first project, I worked on a platform called Musician Shopper. This online platform facilitates the purchase of musical instruments and equipment for musicians, as well as providing a platform for connecting with other musicians.

Laboratory Manager / OBA Specialist Technician

2015 - 2022

Archroma SL, Barcelona, Spain - Basel, Switzerland

  • Started as a laboratory technician at Archroma, collaborating in the department of optical brightening agents (OBAs) for the paper industry
  • Tasks included:
    • Application of the product in the laboratory
    • Writing reports for clients
    • Writing laboratory operating methods
    • Treatment of data provided by companies for product optimization, etc.
  • Acquired the role of laboratory manager, designing the different application processes of the products, under the specific needs of the clients, the production plants at a global level and the new developments of the R&D department
  • Collaborated as a technical advisor in several industrial trials and audits carried out for clients, for the optimization of consumption and optical benefits in the industry.

Laboratory Technician

2015 - 2022

Adiquímica, Barcelona, Spain

  • During my time at Adiquímica I began developing my activity in the laboratory for the control and quality of water samples for clients. I performed the analyzes by potentiometry, titrimetry, and high-efficiency liquid chromatography.
  • Additionally, I collaborated in the microbiology laboratory determining the presence of Legionella, Clostridium and aerobic bacteria in all types of liquid samples.
  • In the same year, after 7 months, I was transferred to the R+D+i laboratory for the development of products for the treatment of reverse osmosis (RO) membranes, developing the tasks autonomously:
    • Implantation of pilot plants
    • Formulation of products
    • Product application
    • Report writing


My Services

Web Applications

Building and deploying web applications using Ruby on Rails framework on Heroku platform

User Interfaces

Developing and implementing dynamic user interfaces using HTML, CSS, and JavaScript


Creating and managing databases using SQL, such as PostgreSQL or MySQL


Consuming APIs from external services to retrieve data and display it on the web application

Performance Optimization

Optimizing the performance of web applications using techniques such as caching and indexing

OBA Consultant

Optical Brightening Agents for the paper industry consultation


My Works

  • All
  • App
  • Card
  • Web

Nirvana Yoga

Yoga studio website

Yoga Pere

Online yoga school

Indie Shopper

E-commerce for local bussiness


Online LGBTQ+ Community Platform


Contact Me

My Address

Arc de Triomf, Barcelona, Spain

Social Profiles

Email Me


Call Me

+34 673 443 804

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