I started working on Ströer OMS to develop a calendar app. OMS is an internal management platform for maintenance of their billboards. Which has a complex infrastructure. I was working mainly on the frontend, writing templates in Struts (Java template engine), displaying data with AngularJS, and styling with SCSS. Data was retrieved from an API with ajax calls.
After finishing the calendar, I have been continuing working for Ströer for platform maintenance. I soloed the frontend till couple of months later I established a team of three developer which I was leading.