Alex Fabiano Xavier Júnior Email & Phone Number

State Of Goiás, Brazil

São Paulo, Brasil

- Developed and maintained Node.js applications with a distributed architecture, ensuring efficient integration with external systems and continuous improvement of existing services.- Collaborated in identifying and fixing bugs in critical services, utilizing agile methodologies like SCRUM, with active participation in task refinement.- Maintained and updated the codebase of a Flutter application, ensuring compliance with modern standards and improving performance.- Contributed to the development of interactive interfaces using React, focusing on user experience and code scalability.- Developed RESTful APIs in Java with Spring Boot, implementing robust architectural patterns and validations.

Anápolis, Goiás, Brasil

- Developed solutions using Node.js with Nest.js, creating efficient and scalable back-end systems for various projects.- Created responsive Landing Pages with Next.js, improving website traffic and user engagement by 30%.- Built mobile applications with React Native, increasing app downloads and user retention rates by 20%.- Established DevOps capabilities, including automated testing, deployment pipelines, and AWS infrastructure management using Terraform and GitHub Actions, resulting in a 40% reduction in deployment time.- Utilized SonarQube for code quality assurance, ensuring high code standards and reducing the number of critical issues by 50%.- Developed RESTful APIs and microservices in Java using JWT and Spring.

Brasil

- Implemented an integration with the B3 API to automatically retrieve assets from user accounts for calculating the profitability of the portfolio.- Developed a feature to detect assets with missing information from the integration and prompt users to make corrections as needed.- Implemented a customer support system allowing platform users to request assistance via an integrated chat feature between the client and support analyst.- Developed a referral program featuring click, subscription and account creation tracking, with configurable options for administrators to set values per click, registration, and subscription initiated through referral links.- Developed a B2B panel enabling users to share their portfolios with accounting firms seeking to manage their clients' assets through the platform.

- Developed and maintained an asset management platform using PHP, Laravel, and React, improving system performance and user interface.- Migrated the interface from Blade to React, utilizing the Inertia library, resulting in a 25% increase in application speed and a more dynamic user experience.- Created a PWA APK for the system on Android, enabling offline capabilities and increasing user engagement.- Implemented Redis caching and optimized database queries, reducing load times and improving overall application performance by 35%.- Performed background calculations for complex operations, enhancing data processing efficiency and accuracy.

São Paulo, Brasil

- Developed a lost and found application using Spring Boot with TDD methodology, resulting in a reliable system with 95% test coverage.- Utilized Docker for API deployment, ensuring consistent development environments and reducing deployment time by 30%.- Built the frontend interface with Next.js and Chakra UI to a faster development.- Gained extensive experience in version control with Git, managing multiple branches and resolving conflicts efficiently.- Performed thorough unit and integration testing to ensure the reliability of the application, significantly reducing the number of post-deployment issues.

Anápolis, Goiás, Brasil

- Engineered a versatile SaaS platform for merchants, enabling the addition and management of product statuses for sales and rentals, which resulted in a 30% increase in inventory tracking efficiency.- Integrated Stripe payment solutions to facilitate secure and reliable customer subscriptions.- Designed and built a robust user management module, enhancing access control and permission administration.- Implemented comprehensive inventory management functionalities, allowing merchants to set and update product statuses.- Developed a receipt generation functionality, providing merchants with an efficient way to create and manage transaction records.

Anápolis, Goiás, Brasil

- Maintained and enhanced a real estate CMS built with CodeIgniter, improving system stability and reducing bug occurrences by 15%.- Worked with Laravel, implementing an entire ticketing system with user and admin registration, event management, and custom checkout flows.- Customized Magento themes, integrating payment services like GetNet, and enhancing the e-commerce capabilities, resulting in a better user experience.- Developed complex integrations such as OLX and Mercado Livre, enhancing the platform's marketplace functionalities and expanding its user base.- Utilized Git for version control, ensuring seamless integration of new features and maintaining code integrity across different development stages.