nodeJS, Python Developer, Java / Java EE / Javascript, C, C #, C ++, Lazarus / Delphi, Database (SQL), Android / iOS application creation in Kotlin and Flutter, C development for Arduino. Concepts about RESTful APIs, as well as documenting, creating and consuming RESTful APIs in any programming language. Use of the Swagger and OpenAPI 3.0 framework to document an API. Creation of unit tests battery, isolation of external dependency test method, being able to define its behavior and validate the interactions carried out, applying the basic TDD method, obtaining quality metrics from the tests (Percentage of acceptance and code coverage). Using JUnit, Mockito, PowerMock, EclEmma (JACOCO), DataBuilders with Fluent Interface and ObjectMother and TDD (Test Driven Development) concepts.