Available to hire
Hello! I’m Alexandre, a front-end developer with 15 years of experience turning ideas into fast, accessible websites and applications. I enjoy translating designers’ visions into clean, maintainable code, using modern frameworks, UI patterns, and best practices to deliver high-quality products on time. I’m passionate about building solid design systems and reusable components that scale across teams and projects.
I’ve worked with clients ranging from the European Commission to startups, focusing on UI/UX fidelity, design systems, and scalable front-end architectures. I collaborate closely with designers and back-end engineers, keeping UX in line with the designer’s intent while ensuring performance and reliability across web apps and portals.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Language
Portuguese
Fluent
English
Advanced
Spanish; Castilian
Intermediate
French
Advanced
Work Experience
Senior Front-end Developer at European Commission
July 1, 2024 - PresentSenior Front-end Developer for the European Commission. Implemented and maintained applications to manage and create new standards and certifications within the European Union, working with the latest Angular, Sass, eUI/eCL, GraphQL, and REST/JS stacks. Translated user scenarios and mocks into high-quality UI with a strong UX focus, while collaborating with design teams to keep UI/UX consistent and accessible. Employed Scrum practices and modern front-end tooling (Angular, Jest, Sass/LESS, Node, GraphQL, Jira/Confluence) to deliver reliable, user-friendly interfaces.
Senior Front-end Developer at Alter Solutions (client: European Council)
March 1, 2024 - September 8, 2025Led front-end development for a large e-commerce/edits platform used by EU institutions. Built reusable UI components, improved performance, and ensured seamless integration with back-end services. Worked with Angular 16, Sass, GraphQL, Jira/Confluence, and RESTful APIs; focused on UX parity with designer vision and best-practice UI/UX patterns.
Front-end Developer at UseAll Software
October 31, 2018 - September 8, 2025Internal project using React/Redux to identify possible COVID infections. Built a UI with Material-UI, integrated authentication tokens, and connected to a backend via REST/GraphQL. Focused on responsive UI and robust state management.
Front-end Developer at EXT.JS Project (Client: private ERP desktop to web)
October 31, 2018 - September 8, 2025Led front-end work to convert a desktop ERP application to a web-based solution using ExtJS (MVC). Implemented UI screens and connected to .NET endpoints, emphasizing usability and performance.
Front-end Developer at Freelance
December 31, 2018 - September 8, 2025Independent freelance work delivering websites and web apps using React, Angular, WordPress, JavaScript, HTML/CSS, and related tooling. Managed requirements, timelines, and client communication to deliver polished, user-friendly products.
Front-end Developer at TW Systems
July 31, 2016 - September 8, 2025Magento front-end development and WordPress website creation. Implemented HTML/CSS/JS, integrated with back-end services, and delivered responsive, accessible interfaces.
Full-stack Software Developer at WebMais Sistemas
July 31, 2015 - September 8, 2025ERP system development focusing on the financial module, with bank integrations and API-driven features. Worked on front-end and back-end interactions using vanilla JS, jQuery, and Intersystems Caché.
Full-Stack Software Developer at Neuro Digital
February 28, 2013 - September 8, 2025Developed multiple websites from scratch, including B2B solutions with credit card integration. Used PHP, MySQL, HTML5, CSS3, Bootstrap, and jQuery; built e-commerce and enterprise portals.
Web Designer - UI/UX Designer at Ema Software
July 31, 2012 - September 8, 2025UI/UX optimization for ERP products, WordPress development, Moodle integration, and marketing-focused site updates. Created clean UI/UX with accessible semantics and modern frontend tooling.
Teacher of Web Design at Microlins Franchising
September 30, 2011 - September 8, 2025Taught web design fundamentals, HTML/CSS/JavaScript, and related tools to students, reinforcing strong foundations and practical project skills.
Web Designer - Front-end at UNESC
August 31, 2010 - September 8, 2025Led modernization of university site, updated CMS, and developed distance education tools using PHP/MySQL and front-end techniques.
Web Designer - Art Director at Shopping de Ideias Communication
April 30, 2009 - September 8, 2025Created full websites from scratch, wireframes, UI/UX, and marketing materials; combined design and development to deliver cohesive brands.
Web Designer - Art Director at Berimbau Communication
January 31, 2008 - September 8, 2025Designed and implemented websites, wireframes, and marketing materials; led visual identity projects for diverse clients.
Senior Front-end Developer at European Commission
July 1, 2024 - PresentSenior front-end developer for the European Commission, implementing and maintaining applications to manage and create new standards and certifications inside the European Union. Worked with the latest versions of Angular, SASS, eUI and eCl, GraphQL; translated user cases and mocks into high-quality UI, always keeping UX in mind and aiming for consistent UI/UX. Supported the design team in creating UI using Figma and ensured adherence to current UI/UX standards.
Senior Front-end Developer at Alter Solutions (client: European Council)
June 1, 2023 - September 8, 2025Developed a library of components and a design system used by other EU teams. Worked with Angular 16, SASS, GraphQL; translated user cases and mocks into high-quality UI, focusing on UX consistency. Collaborated with cross-functional teams and contributed to design system evolution and code quality improvements.
Front-end Developer at Alter Solutions (client: European Council)
November 1, 2020 - September 8, 2025Led multiple front-end initiatives for the European Council, including an E-Commerce Architecture project for a Swiss heavy equipment company. Designed and implemented features with Angular, Node, and AWS, improving performance and user experience. Worked with cross-functional teams to ensure smooth integration of new features and adherence to best practices.
Frontend Developer at UseAll Software
October 1, 2018 - September 8, 2025Internal project using React/Redux to identify possible COVID-19 infections. Built a frontend interface with Material-UI, implemented authentication tokens, and communicated with a Java backend.
Freelance Front-end Developer at Self-employed
December 31, 2018 - September 8, 2025Freelance work delivering high-quality websites using React, Redux, Angular, Node.js, AWS. Created APIs, implemented UI/UX, mentored juniors, and managed requirements and deadlines across diverse client projects.
Magento Front-end Developer at TwSistemas
July 1, 2016 - September 8, 2025Frontend development for Magento-based e-commerce sites and WordPress-powered company sites, with HTML, CSS, JavaScript, jQuery, SASS, LESS, Node.js, gulp, Photoshop, and Illustrator.
Full-stack Software Developer at WebMais Sistemas
July 1, 2015 - September 8, 2025ERP development focusing on financial modules and bank integration, using vanilla JavaScript, jQuery, and InterSystems Caché; collaborated with support to implement features and fix bugs.
Full-stack Developer at Neuro Digital
February 1, 2013 - September 8, 2025Developed a range of websites from scratch, including B2B solutions with credit card integration. Built e-commerce sites, enterprise portals, and CRM integrations using PHP, MySQL, HTML5, CSS3, Bootstrap, and jQuery.
WordPress Developer - UI/UX Designer at Ema Software
July 1, 2012 - September 8, 2025ERP/CRM web development with emphasis on UI/UX improvements, WordPress site development, and updating ERP-related features via PHP and MySQL. Focused on user-friendly interfaces and marketing-friendly sites.
Web Designer - Art Director at Shopping de Ideias
April 1, 2009 - September 8, 2025Web designer and art director responsible for full website creation, wireframes, and frontend development, plus marketing materials and banners. Used Corel Draw, Photoshop, Illustrator, HTML, CSS, and JavaScript.
Web Designer - Art Director at Berimbau Communication
January 1, 2008 - September 8, 2025Web designer and art director creating websites, branding assets, and marketing materials for multiple clients, using Photoshop, Illustrator, Corel Draw, HTML, CSS, and Flash.
Front-end Developer at UNESC - Universidade do Extremo Sul Catarinense
August 1, 2010 - September 8, 2025Front-end development for university website modernization, transitioning from table-based layouts to modern HTML/CSS, and helping implement a new CMS for campus services.
Teacher of Web Design at Microlins Franchising
September 1, 2011 - September 8, 2025Part-time educator teaching web design fundamentals, HTML/CSS, JavaScript basics, and UX/UI concepts to students.
Senior Front-end Developer at European Commission
July 1, 2024 - PresentImplemented and maintained applications to manage and certify EU standards and certifications; translated use cases and mocks into high-quality UI; collaborated with UX designers to maintain a cohesive UI; leveraged Angular, SASS, GraphQL, REST, Jira/Confluence; contributed to design-system updates and UI implementation aligned with UX.
Senior Front-end Developer at Alter Solutions (client: European Council)
March 31, 2024 - September 8, 2025Led frontend efforts to build tools for managing summit credentials and building access; implemented UI in Angular 16 with SASS and GraphQL; translated user stories and mocks into production-ready UI; collaborated with cross-functional teams; emphasized UX fidelity and design-system adherence.
Senior Front-end Developer at Alter Solutions (client: Eurocontrol)
June 30, 2023 - September 8, 2025Developed a library of UI components and a design system used across applications for air-traffic-related tooling; improved performance and UX; collaborated with cross-functional teams to ensure seamless feature integration; employed Scrum, Node.js, NestJS, React/Angular, GraphQL, REST, and other modern tech.
2 - E-Commerce Project Architect (Angular)
November 30, 2020 - September 8, 2025Architected a large-scale e-commerce frontend for a Swiss heavy equipment company; led frontend development with Angular and Node.js, optimizing structure, performance, and UX; coordinated with backend and product teams to deliver features using Scrum and modern tooling.
Full-stack Developer at WebMais Sistemas
July 31, 2015 - September 8, 2025Developed ERP-related features, financial modules, and bank integrations; implemented APIs, UI/UX layers, and back-end data flows using vanilla JavaScript, jQuery, and server-side technologies; collaborated with support to deliver new features and fixes in a timely manner.
Full-stack Developer at Neuro Digital
February 28, 2013 - September 8, 2025Developed multiple websites and applications as a full-stack developer; built B2B solutions with card payments, e-commerce integrations, and dynamic front-ends; worked across PHP, MySQL, HTML5, CSS3, Bootstrap, and jQuery.
Web designer - UI/UX Designer at Ema Software
July 31, 2012 - September 8, 2025Led UI/UX redesign for ERP systems; created web/marketing content, WordPress sites, and UI components to improve usability and presentation; contributed to marketing and product pages.
Teacher of Web Design at Microlins Franchising
September 30, 2011 - September 8, 2025Taught web design fundamentals to students, reinforcing HTML/CSS basics, semantic markup, basic JavaScript, and UI/UX concepts; supported students with practical projects and hands-on guidance.
Front-end Developer at UNESC - Universidade do Extremo Sul Catarinense
August 31, 2010 - September 8, 2025Upgraded university site from table-based layouts to modern, tableless design; migrated content to a new CMS; built distance education features and institutional pages.
Web Designer - Art Director at Shopping de Ideias
April 30, 2009 - September 8, 2025Created full websites from concept to deployment; produced wireframes, UI/UX designs, and marketing materials; leveraged PHP, MySQL, HTML/CSS, and JavaScript.
Web Designer - Art Director at Berimbau Communication
January 31, 2008 - September 8, 2025Designed websites and marketing collateral; led creative direction for multiple campaigns; implemented frontend code with HTML/CSS/Flash and visual design tools.
Education
BSc in Software Engineering at Cruzeiro do Sul, Brazil
January 11, 2030 - June 1, 2024Certificate: JavaScript Best Practices at PluralSight
January 1, 2019 - January 1, 2019Certificate: Angular Fundamentals at PluralSight
January 1, 2019 - January 1, 2019Certificate: Angular Getting Started at PluralSight
January 1, 2019 - January 1, 2019Certificate: OO Programming JS ES6 at PluralSight
January 1, 2019 - January 1, 2019Front-end Stronger Practices at Udemy
March 15, 2020 - March 15, 2020REST API with Node, Mongo, Express and Mongoose at Udemy
May 15, 2020 - May 15, 2020BSc Software Engineering at Universidade Cruzeiro do Sul
January 11, 2030 - June 1, 2024Qualifications
Angular Fundamentals
January 11, 2030 - September 8, 2025JavaScript Best Practices
January 11, 2030 - September 8, 2025Angular Getting Started
January 11, 2030 - September 8, 2025OO Programming JS ES6
January 11, 2030 - September 8, 2025Front-end Stronger Practices
January 11, 2030 - September 8, 2025JavaScript Best Practices
January 1, 2019 - September 8, 2025Angular Fundamentals
January 1, 2019 - September 8, 2025Angular Getting Started
January 1, 2019 - September 8, 2025OO Programming JS ES6
January 1, 2019 - September 8, 2025Front-end Stronger Practices (Udemy)
March 1, 2020 - September 8, 2025RestApi with Node, Mongo, Express and Mongoose
May 1, 2023 - September 8, 2025Airlines operations - Essentials of Aviation
May 1, 2023 - September 8, 2025Next.js & React - The Complete Guide
May 1, 2023 - September 8, 2025Fullstack ReactJS apps with the NextJS framework!
May 1, 2023 - September 8, 2025Reactive development with Angular
March 1, 2024 - September 8, 2025RxJs In Practice
March 1, 2024 - September 8, 2025Complete agile scrum master
May 1, 2025 - September 8, 2025BSc
January 11, 2030 - June 1, 2024JavaScript Best Practices
January 1, 2019 - September 8, 2025Angular Fundamentals
January 1, 2019 - September 8, 2025Angular Getting Started
January 1, 2019 - September 8, 2025OO Programming JS ES6
January 1, 2019 - September 8, 2025Front-end Stronger Practices (Udemy)
March 1, 2020 - September 8, 2025RestApi with Node, Mongo, Express and Mongoose (Udemy)
May 1, 2023 - September 8, 2025Airline Operations: Flight Planning and Flight Dispatch (Udemy)
May 1, 2023 - September 8, 2025Next.js & React - The Complete Guide (Udemy)
May 1, 2023 - September 8, 2025Fullstack ReactJS apps with the NextJS framework! (Udemy)
May 1, 2023 - September 8, 2025Reactive development with Angular (Udemy)
March 1, 2024 - September 8, 2025RxJs In Practice (Udemy)
March 1, 2024 - September 8, 2025Complete Agile Scrum Master (Udemy)
May 1, 2025 - September 8, 2025Industry Experience
Software & Internet, Government, Manufacturing, Telecommunications, Professional Services, Media & Entertainment, Transportation & Logistics, Education
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Hire a Front-End Developer
We have the best front-end developer experts on Twine. Hire a front-end developer in Ixelles today.