I am experienced in back-end applications. Mostly with Java, but also with C#.
It is where I am currently working. There we have an ERP System that uses iDempiere as framework, Java for back-end, Jasper for reports and PostgreSQL as database. Analyzing problems, creating solutions and improving functionality is part of everyday life.
That prototype was made on a group for a Course Conclusion Test. It was used Xamarin for app's front-end, C# for its back-end and the integration between them was made with Arduino, by using the C language. There, I developed the mobile applications and performed the requirements gathering.
That project was also made for a Course Conclusion Test. The front-end was made with Java Swing, the back-end with Java and the database chosen was also SQLite. There, I developed the system and performed the requirements gathering.
That System was made with Swing for front-end, Java for back-end and uses a SQLite Database. There I made a freelancer work, listen to the client needs and develop the solution.