As a Lead Front End developer for Alliander I worked on the architecture of two applications and helped set up a design system as innerSource. First front end I built is called Holonet and is used internally to determine the ideal path for investment in the national electricity network. It's built around Angular, Openshift and custom built components including more advanced such as an arcGIS map viewer, Schematic Network viewer and complete set of form components. Every side effect is handled within a completely unit tested State Management system (NGRX).
After delivering Holonet I continued working on other applications and set up a design system to help the various UX teams and Front End developers work together.