I helped both my parents get the jobs they have now. I did the desire manifestation thing nightly for them - for my mom I would imagine her happy and fulfilled, and I had a list of things I went through over and over while I imagined her having a job that she really liked. I did basically the same thing for my dad, although not quite as detailed because I don’t have a good idea of what the heck he actually does in his job sector. I made sure to focus on only the positive things that I wanted for them, not any negatives, and I made sure it was always “playful” and enjoyable.
So yeah, I would use your imagination like you do with your own desires. That’s what I did for my parents and it worked really well. I will say this: it did not work overnight. My mom found her current job actually relatively fast, but she was doing something very similar to the work I was doing at the same time so we were working in tandem. It took a little longer with my dad.
It worked with my parents because they were both actively searching for jobs and they had positive beliefs about the jobs they were looking for and their ability to find jobs (my dad also had some negative beliefs, but he was pretty good about not focusing on those the majority of the time). Our beliefs worked together, and I’m sure it would have worked without my help, it just might not have been as quick or as powerful, I guess? If your partner doesn’t have positive beliefs about finding a job and such, it might not work as well. Like Chris says, you can positively influence him, but you can’t actually create his reality for him.
Even if you don’t do the imagination work, it could help to just be extremely positive whenever you talk to him about his job search (as long as it’s genuine and you really feel that way, of course). Your positivity could definitely influence him, your beliefs about his ability to find a good job would help.