Bruno Molteni, Web UX Developer in Barcelona, Spain
Bruno Molteni

Web UX Developer in Barcelona, Spain

Member since April 17, 2020
Blending the logic-wielding and problem-solving of an engineer with the visual sensitivity of a designer, Bruno brings over ten years of experience focused on modern front-end architectures. ​He is proficient with migrations, optimization, CRM, UI, and feels right at home speaking the language of both developers and designers. Bruno is an asset to any project, especially those requiring a technical and aesthetic background.
Bruno is now available for hire


  • Freelance
    React, Node.js, HTML, CSS, User Experience (UX), User Interface (UI), JavaScript
  • Fetcher
    BEM, SCSS, Babel, Webpack, Node.js, Storybook, Redux, React, JavaScript
  • Sports Illustrated Play
    ASP.NET MVC, BEM, SCSS, Grunt, Node.js, jQuery, JavaScript



Barcelona, Spain



Preferred Environment

Manjaro Linux, Node.js, BEM, SCSS, Redux, React

The most amazing...

...front-end architecture I’ve developed was an online app for the biggest bank in Argentina while leading and mentoring six front-end developers.


  • Front-end Consultant and Architect

    2020 - PRESENT
    • Helped Labelbox ship their Contentful-backed website to enable the marketing team to quickly iterate on the content.
    • Worked alongside NewBlue to implement a scalable front-end architecture that enabled us to quickly create over a dozen micro-front ends to drive animated graphics on their live broadcast software.
    • Onboarded and managed another developer using the architecture I designed to scale our development efforts quickly.
    • Implemented a real-time update solution using WebSockets and Webhooks in a scalable way.
    • Created an architecture that allowed the team to integrate with several different OAuth providers frictionless.
    Technologies: React, Node.js, HTML, CSS, User Experience (UX), User Interface (UI), JavaScript
  • Front-end Architect

    2017 - 2020
    • Migrated the app's UI from jQuery to React in the first three months while creating a custom-made component library, later used in two other company projects.
    • Implemented a scalable front-end architecture and technologies' best practices to support the team's future growth.
    • Improved the developer experience for the team by implementing a live documentation system for the component library to encourage code reuse.
    • Taught existing and new team members the conventions and best practices for React and modern CSS (BEM, ITCSS).
    • Developed a custom scaffolding solution for quickly creating new components and pages, making the onboarding process and development of new features significantly faster.
    Technologies: BEM, SCSS, Babel, Webpack, Node.js, Storybook, Redux, React, JavaScript
  • Senior Front-end Engineer

    2016 - 2017
    Sports Illustrated Play
    • Built a distributed team to develop a web creator project with a modular drag-and-drop interface for creating youth sports team sites.
    • Created new themes, layouts, and modules; maintained current ones, ensuring every possible combination looked great on all screens.
    • Modified the development environment of the project, bringing it up to modern standards.
    Technologies: ASP.NET MVC, BEM, SCSS, Grunt, Node.js, jQuery, JavaScript
  • Front-end Developer | Team Lead

    2014 - 2016
    Agencia EGO
    • Assisted the agency on the Santander Río CRM web app. Joined the ongoing project, leading the front-end development team.
    • Collaborated with designers, product managers, and developers. Mentored the junior developers on the use of Angular.
    • Acted as a front-end architect developing a proof-of-concept of the tech stack following the bank's strict guidelines.
    • Onboarded three front-end developers into the stack I developed. After the stack proved to be a success, three more front-end developers joined the project using it.
    Technologies: Less, Gulp, Node.js, React, AngularJS, JavaScript
  • Front-end Developer

    2014 - 2014
    • Collaborated with the development team to build, a user-curated database of travel.
    • Migrated a legacy codebase to use AngularJs, which was the latest technology stack available at the time.
    • Developed several custom components from scratch to use in various core features of the site and marketing landing pages.
    • Implemented a great user experience, taking into account the design and specifications of product designers.
    Technologies: Git, Grunt, Sass, Node.js, AngularJS


  • NewBlueFX Web Controllers

    Developed several micro-front ends embedded inside desktop software. They fetched data from OAuth providers like Google, Facebook, and Twitter, displaying it on a responsive UI and communicating with desktop software via WebSockets to trigger animated graphics overlaid on top of live broadcasts.

    I architected the front-end stack to allow quick iteration of these micro-front ends, enabling me to collaborate with an outsourced developer and implement over 15 different apps in 10 months.


    An online human-resources platform that eases access to high-quality candidates while providing tools to automate all email communication.

    At the start of the project, I was in charge of migrating the existing legacy codebase from a server-rendered app to a SPA using React.
    I proposed a bottom-up approach, creating a custom component library alongside a living style guide documentation and code generation tools and enabling the migration to move forward quickly.

    This system proved to be a success since I single-handedly completed the migration in my first three months with the company. After the migration, I constantly improved our architecture, onboarding and mentoring new front-end developers and ensuring we kept a high-quality codebase.

    The component library was then used in three different projects to ensure consistency across all services and help ramp up development efforts.

  • Santander Argentina Online Banking

    Santander Argentina needed an online banking service platform for individuals and corporate customers.

    As the front-end architect, I started creating a proof-of-concept of the front-end stack; I ensured all the technical requirements were met and helped set up the development workflow.

    From the start, I was in charge of onboarding and mentoring new front-end developers as the project moved on and continuously improving the stack I designed to make sure we follow best practices.

    In sum, I developed a living style guide for our UI components, proposed a top-down approach when building new features, and ensured optimization for code reuse and better developer experience.


  • Languages

    JavaScript, HTML, SCSS, Less, CSS, Sass, JADE, PHP, C#
  • Frameworks

    Bootstrap, Express.js, AngularJS, Foundation CSS, Redux, ASP.NET MVC, Angular, Unity, Electron
  • Libraries/APIs

    React, React Redux, Node.js, jQuery, Vue
  • Paradigms

    Web Performance Optimization (WPO), Functional Programming, BEM
  • Other

    Web UX, Web UI, CSS3 Animation, Google SEO, Storybook, WebSockets, Styled-components, Airtable, User Experience (UX), User Interface (UI), UI Blueprints, UI Components, Front-end
  • Tools

    Webpack, Grunt, Gulp, Git, Babel
  • Platforms

    WordPress, Contentful, Manjaro Linux, Docker
  • Storage

    MongoDB, MySQL


  • C# Scripting Fundamentals
    JUNE 2021 - PRESENT
    Circuit Stream
  • Certified Developer
    Online Freelance Agency

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