Did you not ask about this same job not long back? I think for a female friend with children? Job is similar to what some call a Mobile Operative. Preparing freight trains for departure, fuelling, oiling, sanding, brake testing/assisting brake tests, cleaning, documentation, some shunting. Something along those lines, shift can be whenever they need you within the 24 hr period. GBRf quote a nominal 39 hours, likely much more some weeks, could be less at others. Only quoting what I’ve read, happy to corrected by anyone who works for or have worked for them. They seem like a good company though. Where abouts are you looking?