Joel Mañas del Barrio

English project. Develop and maintain multiple Rest API with Nodejs 22 / TypeScript from OpenAPI specifications. Version control with Git/GitLab and deployment with GitLab pipelines. AWS Lambda, S3, Athena, CloudWatch. I also had the opportunity to take part in interviews for newcomers as technical interviewer assistant.

I worked as a Full Stack developer at Inditex, developing an internal user management application. The application is based on a Rest API that adheres to the OpenAPI specification. The backend implements this specification, developed through a proprietary framework based on Spring Boot with Java 17 that, through queries to DB2/MongoDB databases and/or external services, makes data available in JSON format for consumption, as well as having a Kafka implementation for sending and consuming events. All classes (controllers, services, utilities, etc.) are covered by tests with JUnit and Mockito. The frontend is developed with React 16, again, from a proprietary framework of the company, which implements components of the framework as well as custom components for the construction of each page from which the API calls are executed to retrieve the necessary data at any time. All components are covered by tests with Jest.

This is a web application for a network of open-air archaeological museums, providing visualization (3D and 2D) of their architectural structures, furniture, and tools. Documentation of various traditional/primitive activities is also created to preserve them over time and for future reference. The application had to have a publicly accessible section and another for administrators to manage its content. As a full-stack developer, I designed tables and relationships in MySQL following the CIDOC conceptualization and the client's direct instructions. I was also responsible for developing the application's backend with Laravel, following the MVC architecture, creating models (migrations, factories, and seeders for test data), repositories, services, and controllers. Once the business logic was implemented, I developed the application's frontend with React and Tailwind CSS, creating individual reusable components as well as complete pages.

I worked in the insurance sector developing BBVA-Allianz's internal insurance contracting application. I developed new features, checks, and stages for insurance contracts by creating new classes in Java 11 and performing tests against the application itself (not unit tests). Some of these services executed queries to external services through a Rest API.

I worked in the telecommunications sector on a Telefónica project, updating/transpiling an internal application from C++ to Java 11. To do this, I had to consult the original C++ code located on remote Linux machines, interpret and understand its function, and program its equivalent service in the new application using Java. This also involved designing new tables in MySQL databases. Some of these services executed queries to external services using a REST API, which I tested with applications such as Postman/SoapUI. Once the development was complete, I had to compile the application and upload the latest version to another remote Linux machine from which to run the service. I also had the opportunity to design and develop a completely new feature, independent of the original application, that allowed scheduled notifications to be sent via email using Cron Jobs to the appropriate Telefónica technicians when an error or other important event occurred in the system.

I worked in the insurance sector developing the internal insurance contracting application for Ocaso. Using SISnet Seguros software as a base, I developed new features, checks, and stages for insurance contracts by designing new tables in MySQL databases, creating new classes in Java 11, and testing against the application itself (not unit tests).