Which technical skills are required?
As far as UI automation testing concerned, Tester must have a basic understanding of AUT 's technology (like Angular) so that they can understand the application components to automate. Domain knowledge will help create End user scenarios to cover. Understanding the Automation tool (like TestComplete) will help you utilize its functionality to cover up test scenarios. If you are good at Scripting then your maintenance effort will less.
Which skills help a person grow in the UI Testing carrier?
I would say, Automation tool knowledge on handling AUT objects, Any Scripting language
Is attending UI Testing courses required? Which ones can you recommend?
I'm not a big fan of this but always courses help you get better in understanding the application.
