The years in which Stalin dictated what happened in Poland, i.e. the same years in which Rajmund Kaczynski went from being an officer in the AK to
No, most historians agrees that Stalinism in Poland stared in 1948 and ended in 1956. Whereas R.Kaczysnki finished his studies in 1947 like many others AK-officers or members. At the time majority of professors were still from per-war sort.
being a highly favoured university student
Highly favored is your invention of curse, that shows your bias.
then on managerial position in a state company in the year of his graduation
Poland after the war needed badly all engineers and technical specialist they could get their hands off so it was quite often that soviets overlooked some flaws in order to be able to run the country. It is not a secret either.
all at a time when even Polo says that having even a father who had served in the AK was an obstacle to even getting a university education.
later - yes but not in the years1945 - 1948.
It's a fact
It is fact open to interpretation. You are accusing someone who is long death of being a traitor or a snitch and for that a common if not a basic decency dictate that you investigate thoughtfully that case. You need to bring in some proof beside facts of life, gossip and guesses.