All done online. Even the actual visa is an e-Visa so it won’t appear in your passport. The stamp will refer to DTV e-Visa and you will have the evidence on your portal
I had taken a photo of a passport sized picture for my profile picture - clearly not good enough quality. And I only supplied 3 months instead of the 6 .. so this delayed my application. The rest is easy too
I think the proof of work is secondary to the proof of financial independence (the savings amount) & the ability to pay the fee. It’s possible that every embassy has a different approach though.