I'm a full-time IT system developer and would now like to do this as a secondary job.
What are the options? I'd hate to do hardware support… Aka. Why is my laptop from 1870 so slow.
Take orders yourself, i.e. Own small business or apply to a company that develops software
Augustus Intelligence currently has a vacancy.
Develop a good app.
Then you have to register a business as a sideline: https://www.klicktipps.de/gewerbe.php
WHAT
You first need to clarify with your employer whether they allow this. Especially if you want to work in the same industry, your employer has to agree to this part-time job.
"WHAT" "what?!
"WHAT"
Are you sure that you really work in IT full-time? Such a strange and unprofessional behavior suggests a 16 year old suburban gangster.