⟩ Should a team lead involve himself in testing when he is available? Will it downgrade his/her position before the fellow team members?
You should involve in testing the application by yourself. Because, at the end you will be responsible for code developed by your team/team member. If you are not in development then testing the app will give you one more avenue to know what was done in the back-end.
This (testing) noway degrades your job, depending on howmuch effort you are putting on testing the app, prior to the code goes to QA.
