Find Your Cruise
There is one based in Scotland UK 44 141 6498644 and web https://www.cruiseservices.co.uk/
but this group do warn you of bogus sites, but given your location maybe not a lot of good but they are on the net and maybe able to pass you onto some other group who might suit your needs given your location. You will find a email address on this site.
Another way is to find a Cruise Line's own website, scroll through it and you will invariably find a section marked "Employment" or "Jobs" and you can follow the trail from there .... Good luck ... Neil.