There's a book I like called "Stumbling Upon Happiness", which says that people are generally happier with making changes than staying put - even if things go wrong, they are very good at rationalizing them. So that would argue for taking the SWE offer as a tie-breaker.

Re the money, you might well be able to command a much higher salary as a PhD in computer vision / deep learning, which would be an argument for continuing the PhD.

The part that gives me pause is that you are not really excited about your PhD topic. It's a long process, so I think you will want to have that excitement to be able to sustain you through doing a PhD.