- I implemented and improved features in the online accounting platform that serves over 1,600 B2B and B2C clients, using Angular, Spring Boot, and PostgreSQL. These implementations met the needs of both clients and company employees;- To enhance the services provided by Facilite in the accounting and tax departments, I integrated REST APIs from Serpro, which use the OAuth2 authentication protocol, for company data inquiries, DAS transmission, CND inquiries, SITFIS report generation, among others. The integrations were done using Spring Boot for API communication, Angular to create the user interface for form submission, and PostgreSQL to store the query data;- I automated the production of accounting and legal reports, as well as routines to optimize workflows in the financial, HR, and operational departments, also using Angular, Spring Boot, and PostgreSQL;- I participated in the creation of a mobile app in Flutter for Android and iOS, expanding accessibility to the services provided by the company. The app has already surpassed 600 downloads, demonstrating its relevance and usefulness to users;- We use agile methodologies to ensure efficiency and flexibility in development, including Trello for task organization and tracking, and dailies to align progress and quickly resolve impediments;- I developed and executed unit tests to ensure code quality and reliability. I used JUnit to create test scenarios that verify the behavior of implemented features, ensuring that each unit of code functions as expected. Continuous unit testing contributed to early bug detection and maintaining system integrity during the development and implementation of new features.