Hola Theo,
I heard of you in Airmed and in AEM. We have friends in common.
They hire expats on 747. But to be honest I don't know if they're hiring right now.
TNT upgrades FO's to left seat, even with less experience that you have now. This happens mainly because TNT pilots move to other airlines. Taxes make their salary less than in other airlines where they can enjoy daylight flying. However TNT pilots don't fly more than 13 days a month (even less). So you have to put in your balance to fly less and less payroll and less flying hours per month.
Not too much info, but I hope it could help you a little.
Best regards!