Marcel Amorim

Experience

• 

  Worldflex

  Feb 2006 - Oct 2015

  Frontend Developer

  𝗣𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲• Position: Software Engineer at Worldflex, a software house specializing in ERP solutions for the retail sector, located in Imperatriz, Maranhão. I worked on various projects, including checkout systems, invoice generation, legacy code maintenance, reporting, and the development of new products. I utilized technologies such as C#, Visual DataFlex, Crystal Reports, among others.𝗖𝗮𝗿𝗲𝗲𝗿 𝗣𝗿𝗼𝗴𝗿𝗲𝘀𝘀𝗶𝗼𝗻 • Began as an intern and advanced to become the lead developer of the company, showcasing dedication and growth.𝗖𝗼𝗻𝘁𝗿𝗶𝗯𝘂𝘁𝗶𝗼𝗻𝘀 • Legacy System Maintenance: • Provided maintenance and enhancements to the company’s existing ERP system, built in Visual Dataflex. • Credit Card Integration: • Successfully homologated the ERP software with credit card operators for TEF (Transferência Eletrônica de Fundos) integration. • New Product Development: • Designed and developed desktop solutions in C#, including: • A new checkout system for retail operations. • A module for Electronic Invoice (NF-e) issuance. • Custom Features and Reporting: • Created customized features and Crystal Reports to meet specific client needs, enhancing the system’s adaptability and utility.𝗜𝗺𝗽𝗮𝗰𝘁 • Contributed to expanding the client base by delivering high-quality features and tailored solutions. • Improved operational efficiency through the development of new tools and enhanced reporting capabilities. • Played a pivotal role in modernizing the company’s offerings, helping secure its position as a competitive player in the retail ERP market. Show less

• 

  INAPEM

  Dec 2015 - Oct 2019

  Frontend Developer

  • Position: React and React Native Developer at Instituto Inapem, a social initiative organization in Maranhão, Brazil. I developed internal management systems used by field technicians to register beneficiaries and improve the overall management of the organization’s programs.𝗖𝗼𝗻𝘁𝗿𝗶𝗯𝘂𝘁𝗶𝗼𝗻𝘀 • Technical Leadership: • Led the technical development of a system for beneficiary registration and operational management of the institute. • App Development: • Designed and developed a mobile application using React Native, enabling field technicians to register beneficiaries on-site. • The app significantly reduced paper usage and minimized rework, streamlining the registration process. • Technologies Used: • React, React Native, and Redux were utilized to build scalable and efficient solutions for both web and mobile platforms.𝗜𝗺𝗽𝗮𝗰𝘁 • Improved operational efficiency by implementing a digital-first approach, reducing the dependency on manual processes. • Enhanced the institute’s ability to manage projects, benefitting both the organization and the communities it serves. • Contributed to more sustainable and accurate data collection, driving better outcomes for social projects in the region. Show less

• 

  Boost Commerce

  Oct 2019 - Oct 2022

  Frontend Developer

  𝗣𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲• Position: JavaScript Developer at BoostCommerce, a Vietnam-based company providing product search and filtering solutions for Shopify stores. I was responsible for customizations, bug fixes, performance optimization, and code improvements, ensuring high-quality solutions tailored to client needs.𝗖𝗼𝗻𝘁𝗿𝗶𝗯𝘂𝘁𝗶𝗼𝗻𝘀 • Bug Resolution: Actively identified and resolved bugs, ensuring a smoother user experience for clients’ Shopify stores. • Performance Optimization: Improved the performance of online stores by optimizing code and implementing best practices. • Technologies Used: • JavaScript, jQuery, CSS, and HTML to develop and enhance functionality and design.𝗜𝗺𝗽𝗮𝗰𝘁 • Delivered enhanced performance and reliability for Shopify stores, leading to improved sales and increased customer attraction for client businesses. • Contributed to better user satisfaction and operational efficiency, strengthening the overall quality of the platform’s offerings. Show less

• 

  9bits Soluções

  Oct 2019 - Oct 2022

  Mobile Developer

  𝗣𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲• Position: React Native Developer at Carrinho Certo. I was responsible for building the application from the ground up, focusing on delivering maintainable, high-performance, and user-friendly code for this online supermarket shopping platform.𝗖𝗼𝗻𝘁𝗿𝗶𝗯𝘂𝘁𝗶𝗼𝗻𝘀 • App Development: • Built the application using React Native, leveraging MobX for state management to ensure a smooth and efficient user experience. • Business Impact: • The app played a key role in attracting multiple clients, significantly contributing to the company’s growth. • Carrinho Certo’s success led to the acquisition of the company (9Bits) by Mercafácil. • Post-Acquisition Support: • Assisted in the migration of the application to align with Mercafácil’s infrastructure and requirements, ensuring a seamless transition.𝗜𝗺𝗽𝗮𝗰𝘁 • Delivered a high-quality application that boosted customer engagement and directly influenced the company’s acquisition by a larger enterprise, Mercafácil. • Strengthened the app’s functionality and scalability, making it a valuable asset in the online supermarket segment. Show less

• 

  LegacyTech

  Sept 2022 - now

  Mobile Developer

  𝗣𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗪𝗼𝗿𝗸 • Position: Senior Developer specializing in React and Flutter. I worked on ProdControl, a web and mobile system developed for ProdSistem, responsible for managing the operational control of service providers for Suzano Papel e Celulose. My contributions included designing the system’s architecture, developing scalable solutions, and ensuring high performance and a seamless user experience.𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 𝗨𝘀𝗲𝗱 • Web Development: • React and Remix as the core technologies. • Utilized TanStack Query and other modern tools to ensure efficiency and scalability. • Mobile Development: • The mobile solution was built entirely using Flutter, providing a seamless and intuitive experience for users.𝗖𝗼𝗻𝘁𝗿𝗶𝗯𝘂𝘁𝗶𝗼𝗻𝘀Developed a complete and integrated solution, showcasing expertise in both web and mobile development, ensuring high performance and reliability tailored to the company’s operational needs. Show less

• 

  Upstart

  Oct 2022 - now

  Frontend Software Engineer

  𝗖𝘂𝗿𝗿𝗲𝗻𝘁 𝗥𝗼𝗹𝗲 • Position: Software Engineer at Upstart, an AI-driven lending platform.In this role, I work on various projects using Next.js and React.js, contributing to the development of high-quality UIs, writing automated tests, improving application performance, and ensuring a seamless user experience. My focus is on delivering clean, efficient, and scalable code to support the platform’s growth and innovation.𝗖𝗼𝗻𝘁𝗿𝗶𝗯𝘂𝘁𝗶𝗼𝗻𝘀 • Actively involved in multiple internal projects, delivering solutions with a focus on performance, scalability, and maintainability. • Technologies Used: • ReactJS and NextJS for building robust and dynamic interfaces. • Storybook for developing and documenting UI components. • Unit Testing and End-to-End (e2e) Testing to ensure code quality and reliability.𝗜𝗺𝗽𝗮𝗰𝘁 • Contributed to a significant increase in the number of conversions and growth in the platform’s user base through innovative, user-friendly solutions. • Enhanced the platform’s user experience and operational efficiency by delivering high-quality, scalable software solutions. Show less

• 

  Comprasparaguai.com.br

  Mar 2023 - Nov 2024

  Mobile Developer

  𝗣𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 • Position: React Native Developer at Compras Paraguai. I was responsible for building the new application using Expo, React Query, Tailwind CSS, and other modern technologies. My work focused on improving the app’s performance and usability, delivering a faster, more responsive, and user-friendly experience.𝗖𝗼𝗻𝘁𝗿𝗶𝗯𝘂𝘁𝗶𝗼𝗻𝘀 • Technology Upgrade: • Upgraded the app to the latest version of React Native using Expo, ensuring compatibility with modern standards and features. • Performance Enhancement: • Implemented TanStack Query to efficiently cache server requests, significantly improving the app’s speed and responsiveness. • User Experience Improvements: • Enhanced the app’s usability, making it more intuitive and user-friendly for end-users.𝗜𝗺𝗽𝗮𝗰𝘁 • Delivered a faster and more reliable application, improving user satisfaction and engagement. • Modernized the app’s architecture, enabling easier maintenance and scalability for future updates. Show less