I work on developing features and supervising both back-end and front-end, ensuring the efficiency and quality of operations.

Focused in backend development, delivering high-impact solutions and enhancing system performance. My responsibilities included:Working with PHP (Laravel), GraphQL, SQL, Python, and Java;Managing a GCP infrastructure to ensure high availability;Planning and developing backend features;Creating an advanced PDF generation tool in PHP to address performance issues and bugs from the legacy system, with features like HTML/CSS-like structuring, styling, templating, and componentization.Developing a file conversion server tool to support the upload of Microsoft 365 files;Building a document template store with versioning, granular permission management, and HTML to PDF conversion capabilities;Designing a machine vision-based identity verification system for structured document data extraction, facial liveness checks, and face matching;Debugging and optimizing SQL queries to enhance performance and reduce response times.

I worked on all aspects of the applications, leading the implementation of technologies, developing features both on the back-end and front-end, orchestrating application releases, and managing web services.My main activities included:Development with PHP, Node.js, React.js, React Native, NestJS, TypeScript, and various AWS tools;Planning and development of new features, focusing on the back-end, and coordinating with the front-end team;Management of mobile app publishing on Apple's App Store and Google Play, being fully responsible for iOS builds;Performing complex database migrations, always aiming for zero downtime;Improving the security and performance of existing code, while ensuring best practices are followed for new code;Rebuilding entire legacy applications on modern stacks;Migrating services to a serverless infrastructure, including activities such as containerization, troubleshooting, CI/CD discussions, and development of the first diagnostic and alert tools;Development and modification of WordPress plugins.

Worked with PHP, Python, JavaScript, Node.js, Express.js, and React;Managed MySQL, MariaDB, MongoDB and PostgreSQL databases on read-intensive environments;Worked with Elasticsearch and Redis to increase read performance on big datasets;Developed tools to fetch, analyze and store marketing-useful data;Developed mailing and customer-service tools, such as CRMs and Mailboxes, providing well-known features (Funnel Analysis/Grouping, Campaigns, Delivery, and User Interaction Stats);Built analytical tools, capturing, processing, and retrieving data regarding user interaction on apps and websites;Worked on CMS solutions, providing user-friendly interfaces, with light and easy-to-maintain APIs;Built e-commerce and finance tools, working in strictly safe environments.