I think on average the ceiling for US is about 4x higher than UK and the avg salary is about 2x. UK seems to be about £43k ~= $59,879 [0] average and software dev in America seems to be about £79k ~= $110610 [1].
Both stats from Indeed which say they are basing it on 11.6k salaries for UK and 29.8k salaries for US.
Personal opinion but it matches what I expect. America is where the tech companies flourish and talent resides, as much as we would like to say healthcare is more important than double your average salary in EU I'm not convinced. I'm sure for some people it is however.
As for FAANG specifically I'm unsure but do be careful as taxes in UK are a bit more harder on you compared to somewhere like Austin. You lose 40% of anything you earn above ~£50k in England.
Both stats from Indeed which say they are basing it on 11.6k salaries for UK and 29.8k salaries for US.
Personal opinion but it matches what I expect. America is where the tech companies flourish and talent resides, as much as we would like to say healthcare is more important than double your average salary in EU I'm not convinced. I'm sure for some people it is however.
As for FAANG specifically I'm unsure but do be careful as taxes in UK are a bit more harder on you compared to somewhere like Austin. You lose 40% of anything you earn above ~£50k in England.
[0] https://uk.indeed.com/career/software-engineer/salaries [1] https://www.indeed.com/career/software-engineer/salaries