I was working as a software developer around six years, let me tell you what I've done before.
Mobile apps with Flutter 3+ years
Server Side applications with Node Js 3+ years
Games with Unity3D (Virtual Reality, Augmented Reality, Mixed Reality, 2D, 3D) 2+ years
Wordpress 3+ years
With this technologies I used to connect some different databases like:
MySQL, PostgreSQL, MongoDB, Firebase Real Time and Firebase Firestore.
Production servers that I've work: AWS, Azure, Firebase and Heroku.