Golaszewski was the Cambridge Footlights President in 2002-03.
He wrote, performed in and co-directed a pilot for BBC Three called Things Talk. As a Director, he won the if.comedy Best Newcomer Award with Tom Basden for Won't Say Anything in 2007 and again in 2009 with Jonny Sweet for Mostly About Arthur.
Golaszewski is a part of comedy Sketch group Cowards, which also includes Tim Key, Tom Basden and Lloyd Woolf. They made a TV series for BBC Four and their second Radio 4 series came out in late 2008.
His sitcom Him & Her, starring Russell Tovey and Sarah Solemani, aired on BBC Three for four series during 2010-2014 and won the 2014 British Academy Television Award for Best Situation Comedy.
He has written a West End play, Sex with a Stranger, that was staged in early 2012 starring Tovey and Jaime Winstone.
His second sitcom Mum, starring Lesley Manville, premiered in 2016. Its second series was screened in 2018.
