Development, maintenance, and improvement of PKI solutions:- APIs in Go and Java focused on performance, reliability, and traceability;- Authentication and authorization of users/applications using OAuth2;- Messaging for communication between microservices;- Documentation and versioning of projects;- Implementation of SDKs for Go (PKI, Messaging, REST);Languages used:- Go, Java, and Javascript;Technologies used:-Tracing: OpenTelemetry- Messaging: RabbitMQ (AMQP)- Frameworks: Spring Boot and Gorilla Mux;- Frontend: Angular;- Caching: Redis;- Database: PostgreSQL;- CI/CD: Gitlab-ci;- Version control: Git (Gitlab);- Monitoring: Grafana and Graylog;- Documentation: Swagger (OpenApi 2.0 and 3.0), Markdown, and Confluence;

Development, maintenance, and improvement of data analysis and visualization solutions:- Geomarketing solution for franchises and retail;- Implementation of data structures capable of handling large volumes of geographic data;- Crawlers for data capture;- Extraction, transformation, and loading processes for customer data (ETL);Languages used:- Java and Javascript;Technologies used:- Frameworks: Spring Boot and Vert.x;- Frontend: AngularJS;- Database: PostgreSQL;- ETL: Pentaho and pure Java;