Your weight (stocky) for height (shortish) is on the high side.
You need to lose a bit of bulk.
Your CV, and attitude here, indicate that you are too "cocky" in respect of your own self importance.
In other words, you probably come across as too over-bearing - something that will be looked at as a positive, once you've been in a company for 12 months or more, but a big NEGATIVE as a new joiner.
1)Lose some weight,
2)learn to be more quietly spoken - but still quietly confident - and,
3) be more willing to LISTEN, as opposed to telling them how great thou art!