Working with JavaEE, Spring Framework, NestJs (TypeScript), Python, Node.js and Kubernetes. Using Git, Java, Scrum, TDD, Continuous Integration, Spring Boot, Spring Security, EJB, JSF2, Primefaces, CDI, Database (Oracle, PostgreSQL, MySQL, MongoDB and Redis).I am always concerned with providing consistent, secure, easy to maintain and production-ready systems, as well as helping other developers build better systems.I have knowledge in:- Object orientation, its pillars and principles.- Creation of automated tests with Junit, Mockito and Jest.- Construction of monoliths using JavaEE, Spring Framework and Node.js(NestJs (TypeScript)).- Construction of microservices using Spring Boot, Node.js(Nest.js) and Python(Flask).- Building systems with DDD, rich and anemic domains.- Building systems with messaging (Apache Kafka), API REST and SOAP.- Construction of reactive systems with Spring Webflux.In the last years I have been studying continuously on:- Reactive systems and their characteristics.- Code construction with the ability to reduce maintenance costs.- Types of architecture and their benefits.- Different code structures and arrangements.- Monolithic and microservice approaches.- Quality and tests.