Thanks for the input folks. I do expect to have to put in a certain amount of time outside of work, but its becomming a bit much lately. I am also feeling a little undervalued, as colleagues with less experience are currently earning 25-30% more so work + extra time + less money makes me think i need to have a chat with my current employer and assess my options.

Il update the thread once i have further info to add to the story, as it may help someone else at some stage.