Designed a scalable architecture using AWS, Terraform, NestJS, and React to build a Business Intelligence SaaS for an accounting firm. Used Terraform to provision and manage AWS infrastructure as code, enabling faster deployments and consistent environments. The platform helped reduce employee costs by 20% by preventing overlapping holidays across countries and measuring employee performance in real time. Headed a solution, for a stainless steel factory, in NodeJS, Postgresql, express, sequelize and Angular which included an investigation form allowing staff to input accident details and an interactive dashboard to provide insights, resulting in 108 consecutive days without an accident. Developed a Node.js microservice with express, postgres and prisma orm to handle dossier processing, using BullMQ, AWS DynamoDB, and AWS ECS to a Brazilian electoral counting office that generated 80,000 complex dossies in 24 hours.

Managed the development of a new feature for a banking mobile app, enabling customers to schedule withdrawals and reduce cash reserves in branches. Utilized JSF, JSP, JPA, HTML, CSS, and jQuery to create a user-friendly interface and backend services for data querying and persistence. Resulted in a 17% decrease in cash management costs and improved security for the bank's operations. Guidedthe revitalization project for login screens at a Brazilian bank, employing JSF and JSP technologies to enhance the experience for over 5 million customers. Established a design system with new components using CSS, jQuery, and Nginx to achieve project goals effectively. Improved the microservices developed in Spring Boot, JPA (Java Persistence API) and SQL Server responsible to login both by user/password and by token devices, increasing scalability and security to a brazilian's bank. Implemented a smart menu feature using Angular and Node.js at a bank to enhance sales by 22%, tailoring product recommendations to customer profiles. Managed communication with 30 microservices using NestJS for API Gateway creation, Axios for microservice interaction, and JWT for authentication. Developed and executed unit and integration tests using Jest to ensure system reliability and performance. Collaborated to the development of a self-service solution for a mobile banking app, resulting in a 27% decrease in defaulting customers. Utilized Nest.js and Express.js for backend server setup, Axios for microservice communic

Created a web app solution in Ruby on Rails to an electronics workshop, automating some processes and decreasing the company costs. headed a desktop app solution using Node.js, React and Electron.js, reducing the costs of more than 50 companies through automating processes like taxes emissions, stock and bills control.

Planned the user interface and built in java an Android native app of sport news that increased the number of signers of the Diário do Nordeste Journal. Headed the back-end in Ruby on Rails of an e-commerce app of water distribution water company, maximizing its profit. Coordinated the database modeling of a quiz feature of a skin care app, turning it flexible to changes, customized by user profile and available for A/B tests. Besides that, I improved the way to discover skin issues, using the artificial intelligence IBM Watson to recognize it from pictures taken by the user himself.