Just to be on the safe side, I would stay at least 3 years on a job. 2-3 years is what recruiters/hr people look in CV. If it is less for too many jobs, then t

Just to be on the safe side, I would stay at least 3 years on a job. 2-3 years is what recruiters/hr people look in CV. If it is less for too many jobs, then they assume that you are a job hopper. So in your case, yes I would say that 1,5 years is controversial. For 6 years you should have changed 2 jobs (maybe 3 with a good explanation)