Issued2022
Technical
JavaScript School
Platzi•Advanced Frontend Architecture
JavaScriptFrontendReactArchitecture
Hello, I'm
Mozo.
Crafting scalable, high-performance web applications with modern technologies. I bridge the gap between design and engineering.
10+ Years
Web Development
6+ Products
Built or Scaled
4+ Teams
Across Europe
01About Me
I'm a passionate Senior Frontend Developer based in Barcelona, with over a decade of hands-on experience in the software industry. I specialize in building complex single-page applications and high-performance, responsive websites that are accessible, scalable, and user-focused.
My current focus is on the React ecosystem, but my journey began with vanilla JavaScript and CSS. I'm committed to writing clean, maintainable code and fostering a collaborative, high-trust environment within engineering teams.
02Tech Stack
ReactTypeScriptNext.jsTailwind CSSNode.jsGraphQLPostgreSQLAWSFigma
Professional
Experience
A timeline of my 10+ year journey building scalable web applications, design systems, and leading frontend teams across Europe.
Jan 2022 — Present
Senior Full-stack Developer
@ Cooltra/Barcelona, Catalonia, Spain · Remote
Led the development of a custom backoffice platform, ensuring a smooth migration from a legacy SaaS solution using React and TypeScript.
- Led the development of a custom backoffice platform, ensuring a smooth migration from a legacy SaaS solution using React and TypeScript.
- Built a Progressive Web App (PWA) to support mechanics and battery swapping teams, improving operational efficiency in the field.
- Established the technical foundations for the new Cooltra mobile app, leveraging Expo and enabling seamless over-the-air updates to accelerate feature delivery.
React.jsReact NativeTypeScriptTailwind CSSTDDPlaywright
Jan 2016 — Jan 2025
Full-stack Developer
@ Vinglet/Greater Barcelona Metropolitan Area · Remote
Contributed to building and scaling Vinglet, a platform designed to help entrepreneurs grow their startups through better investments, partnerships, and mentoring.
- Contributed to building and scaling Vinglet, a platform designed to help entrepreneurs grow their startups through better investments, partnerships, and mentoring.
- Developed the landing page and core dashboard using HTML5, CSS3, Vanilla JavaScript, and native WebComponents, while also designing and optimizing a Python/Flask API.
- Spearheaded a UI revamp in 2018, introducing Material Design principles and modernizing the stack with React, Redux-Saga, TypeScript, Babel, Webpack, Prettier, and ESLint.
- Led the migration to Next.js in 2020, moving from CSR to Server-Side Rendering (SSR) to significantly improve SEO and performance, completing the transition through an iterative, team-driven process.
React.jsNext.jsNode.jsPlaywright
Sep 2020 — Jan 2022
Frontend Developer
@ SEAT:CODE/Barcelona, Catalonia, Spain
Frontend development work focusing on React.js with emphasis on test-driven development and quality assurance.
React.jsTDDCypressJest
Jun 2019 — Aug 2020
Frontend Developer
@ Visca Web/Barcelona y alrededores, España
Drove the migration from a legacy monolithic platform built with Vanilla JavaScript to a modern, scalable React/TypeScript application.
- Drove the migration from a legacy monolithic platform built with Vanilla JavaScript to a modern, scalable React/TypeScript application.
- Implemented a Server-Side Rendering (SSR) architecture, enhancing SEO performance and page load speed.
- Optimized the development workflow with Babel, Webpack, and Styled-Components, ensuring cross-browser compatibility and reusable UI components.
- Introduced Storybook as a central hub for component documentation and cross-department collaboration.
React.js
Jun 2018 — May 2019
Full-stack Developer
@ Globant/Gran Buenos Aires, Argentina
Contributed to the development of a platform for Expedia, collaborating closely with stakeholders to deliver high-quality digital experiences.
- Contributed to the development of a platform for Expedia, collaborating closely with stakeholders to deliver high-quality digital experiences.
- Built frontend features with React and implemented backend services with Java and Spring Boot, ensuring scalability and performance.
- Maintained continuous client communication, aligning technical decisions with business goals.
JavaReact.jsSpring Boot
Jan 2012 — Jan 2014
Full-stack Developer
@ Swipe Creative/Argentina
Developed websites with HTML5, CSS3, and Python. Provided consultancy about informatic solutions to companies like Bonano, Developer Group, and Las Cumbres's school.
- Developed a website with HTML5, CSS3, and Python.
- Consultancy about informatic solutions to companies likes Bonano, Developer Group, Las Cumbres's school.
- Handled databases like MySQL, MariaDB, and MongoDB.
- Worked in graphic design with Illustrator and Photoshop to develop the publicity banner of my own company.
HTML5CSS3PythonMySQLMariaDBMongoDB
Career Start
Education
Background
My academic journey has been driven by curiosity and a passion for engineering robust systems. Here is a timeline of my formal education and technical training.
2016 – 2019
Systems Analyst
UTN (Universidad Tecnológica Nacional)
Specialized in systems design, database architecture, and software development lifecycles. Gained deep knowledge in algorithmic logic and backend infrastructure.
SQLJavaUMLArchitecture
2014INCOMPLETE
Computer Engineering
UNMdP (National University of Mar del Plata)
Focused on low-level programming, hardware interactions, and calculus. Transitioned to Systems Analysis to pursue a more software-centric career path.
C++CalculusHardware
2007 – 2014
Technical Degree
Amancio Williams School
Secondary education with a specialized technical orientation. Developed foundational skills in electronics, logic, and basic computation.
TECHNICAL
EXPERTISE
Over a decade of experience building scalable, high-performance web applications. Specialized in the modern JavaScript ecosystem with a strong foundation in backend architecture. modern JavaScript ecosystem
Frontend Development
React
React Native
Next.js
TypeScript
JavaScript
SSR
CSS3
HTML5
Tailwind CSS
Styled-Components
WebComponents
Redux-Saga
Material Design
Backend
Python
Flask
Java
Spring Boot
Node.js
Ratpack
Kotlin
Tools & Ecosystem
Git
Webpack
Turbopack
Babel
Storybook
ESLint
Prettier
Expo
Testing & QA
TDD
Playwright
Cypress
Jest
Databases
PostgreSQL
MySQL
Languages
EnglishProfessional
SpanishNative
Certifications
Achieved
Continuous learning is key to my career. Here are the latest certifications validating my expertise in language and frontend architecture.
Issued2021
Language
EF SET English Certificate
EF Standard English Test•C2 Proficient(74/100)
EnglishProfessionalGlobal
Continuously learning and updating my tech stack to maintain industry-leading standards.