In the past few years, developers’ salaries have increased significantly in the continent. In Germany they are almost on par with London. So to convince somebody to move to the UK and go through the immigration checks, you have to pay more than the average British employer can afford. For 80-90K£, you are far better off getting 60K€ in Germany or Austria. I wouldn’t advise a EU citizen to move to the UK if they aren’t going to earn more than 120K£.