Mario Monteiro

Brand And Web Designer

Postscript

Jan 2024 - Jan 2026 (2 years 1 month)

Designed high-converting SMS marketing popups for Postscript's eCommerce platform, serving global brands such as Feastable (Mr. Beast), Hexclad (Gordon Ramsay), and Innosups (Simion Panda).Collaborated closely with project managers and creative directors to align popup designs with brand guidelines and optimize user engagement.Implemented responsive popup designs using the company's internal builder and custom CSS, ensuring cross-device compatibility and performance.Maintained detailed design and CSS documentation to support consistency, reusability, and team collaboration.Contributed to Conversion Rate Optimization (CRO) efforts through data-informed design iterations and UX best practices.

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Frontend Web Developer (Freelance)

Moabe

Oct 2023 - Jan 2024 (4 months)

Performed frontend UI corrections and maintenance for a SaaS-based betting web application to optimize user interface and enhance overall user experience.Implemented responsive design improvements using HTML, CSS, and JavaScript to ensure cross-browser compatibility and performance.Utilized Azure DevOps for version control, streamlined collaboration, and continuous integration throughout the development lifecycle.Contributed to UI optimization efforts aimed at increasing usability and visual consistency across the platform.

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UI/UX Designer (Freelance)

Luvulu

Jul 2023 - Sep 2023 (3 months)

Designed the UI/UX for a medical application focused on doctor discovery and appointment booking functionalities to improve user engagement and accessibility.Conducted user interviews and utilized AI-assisted research (ChatGPT) to gather insights and inform user-centered design decisions.Created wireframes, prototypes, and high-fidelity mockups using Figma, ensuring intuitive navigation and seamless user flows.Collaborated with stakeholders to translate user needs into functional design solutions that enhanced overall user experience.

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Frontend Tech Leader & UI/UX Designer

Viansari

Jan 2022 - Jul 2023 (1 year 7 months)

Led the end-to-end design and development of SaaS web applications for clients, from concept to deployment.Directed frontend architecture using React.js, Next.js, TypeScript, and ChakraUI, ensuring scalable and maintainable codebases.Designed user interfaces and prototypes in Figma, aligning visual design with user experience principles and client requirements.Managed project workflows and team collaboration using Azure DevOps, Discord, Trello, and ClickUp.Mentored developers and facilitated cross-functional communication to improve project delivery and technical quality.

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Frontend Web Developer

Monocard

Jan 2022 - May 2023 (1 year 5 months)

Led the maintenance and restructuring of the company's e-commerce platform, improving performance, scalability, and user experience.Developed and refactored frontend components using React.js, Next.js, TypeScript, ChakraUI, and WordPress.Managed version control with GitHub and coordinated tasks using ClickUp to streamline project workflows and team collaboration.Ensured code quality and consistency through clean architecture practices and responsive design implementation.

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Frontend Developer & UX/UX Designer (Freelance)

Personal client

Jul 2021 - Sep 2021 (3 months)

Designed and developed a music streaming mobile application from concept to deployment, focusing on intuitive UI/UX and smooth playback functionality.Created wireframes and prototypes using Adobe XD, and built the frontend with React Native (Expo), HTML, and CSS.Managed the full design-to-development cycle, ensuring alignment between visual design and technical implementation.Delivered a fully functional app tailored to user specifications and modern mobile design standards.

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Fullstack Web Developer (Freelance)

Personal client

Aug 2020 - Sep 2020 (2 months)

Built a personal portfolio website for an international DJ to showcase music, connect with fans, and share his career journey.Designed wireframes and prototypes in Figma, then developed the site using HTML, CSS, React.js (with Hooks), Node.js, and PostgreSQL.Implemented a responsive, visually engaging frontend with a lightweight backend for dynamic content management.Ensured fast load times, cross-browser compatibility, and a seamless user experience across devices.

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Frontend Developer & Web Designer

F2s Company

Apr 2020 - Jul 2020 (4 months)

Contributed to client web development projects as both a frontend developer and web designer, translating mockups into functional websites.Developed interfaces using HTML, CSS, JavaScript, React.js, and Styled Components.Created UI designs and interactive prototypes using Adobe XD to present concepts and gather client feedback.Collaborated with team members to ensure timely delivery and adherence to project specifications.

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Desktop Software Frontend Developer

Wajiz Technology

Jan 2015 - Oct 2015 (10 months)

Developed the frontend user interface for desktop software applications using NetBeans IDE and Java-based GUI frameworks.Collaborated with backend developers to integrate UI components with application logic and data layers.Focused on usability, consistency, and performance in desktop application design and implementation.Contributed to early-stage software projects, laying the foundation for scalable and maintainable frontend architecture.

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