One issue you might have is that your user's are "shortlived", I would imagine a typical user is going to use it for a couple of months every 2-3 years, hence why I'm stressing quick growth.
Alternatively you could let users make profiles with their preferences for their ideal job (remote only, MEAN stack, >£80k, etc) and notify them when a matching ad appears, you could even charge for this. This strategy allows you to also charge employers to contact/see your users, I think Dribbble does this, so it might be worth taking a look there.
Good luck and let us know how it works out, I love hearing about stuff like that.
Maybe focus on the brand/scale, this is a unique time in history and monetize low for now, this could be the new normal. Profit when they’re hooked and not worrying about rent. Perhaps find sponsor/partner to fund backend scaling/adverts.
Multilanguage support for markets you think might be most related.
"Remote job boards" are a dime a dozen on the web, but first of its kind in a mobile app.
The easy answer is to sell featured job postings, but my users are candidates and not employers.
I think the play here is: land grab and sell your users to an aggregator at some point. So I'd grow it as fast as possible while minimizing distractions. Also, I'm assuming you've read Traction. I'd burn out whatever growth you're doing until it dries up or you're approaching the point where you can no longer support it without monetizing before digressing away from what appears to be working great.
There's your answer right there. Find remote employers who are hiring and pitch them on a paid listing with prime placement within the app.
Job boards are marketplaces. Supply = employers, demand = candidates. Charge supply for access to demand. You've built up the demand side of the marketplace first. Now you need to build the supply side. How are you pulling in listings right now?
LinkedIn has a mobile app. Several in fact.
Grow through advertising of your own
Get purchased by indeed.com or whatever.
Profit
I'll take a 1% cut for coming up with this plan for you