I am a business manager who may well be transferring from the UK to Poland and I would like some help to understand the above. I had a conviction for assault when I was much younger (14 years ago) which was a stupid mistake I have since learned from and I am now in a respected position at a large company.

My worry is that I have heard there can be checks on this as part of the residency permit application (at the discretion of the authorities they can ask for evidence of no convictions in your home country). My conviction was a long time ago and not serious (and it did not stop me getting a work permit for the US in the past) but I would like to know
1) will I have to declare it (in the uk I don't have to declare it as it was so long ago) or supply evidence of no convictions
2) would it affect my chances of getting a permit to stay and work in poland for 2 years

any info/advice would be appreciated!