Arek Zasowski began his acting career in London (England), in 2016, where for the first time he took part in an adaptation of a country house murder mystery play, The Real Inspector Hound, where he recorded his voice for a role of Radio News Announcer. In August 2016, Arek debuted on the big screen as he starred in two short films produced at The New York Film Academy and filmed at the backlot of the Universal Studios, Los Angeles.
In April Fools Day (2016), a short romantic comedy directed by Kevin Luther Apaa, Arek played Calvin, a rather funny character with a peculiar sense of humor when it comes to proposing to his girlfriend. In You Can Heal Your Life (2016), drama directed by Sha Peng, Arek portrayed Ben, a record producer who was trying to overcome weaknesses from his troubled past.
In March 2017, Arek for the first time wrote and directed a short romance drama Let Go: The Prelude (2017) which was filmed in Cyprus, where Arek portrayed Henk, an archeologist, who is struggling to come back to normal life after losing love of his life.
In May 2017, Let Go: The Prelude (2017) was selected to participate in the official program of the Cyprus International Film Festival, ranking in the top 100 best reviewed festivals among 5500 film festivals worldwide according to Filmfreeway and Pafos 2017 the Cultural Capital of Europe.
In February 2018, Arek Zasowski debuted on cable television in Canada, Shaw TV, where Arek star in Chinese Angel drama (dir. Sha Peng) and portrayed Spencer Thompson, a depression suffering financial consultant from London. Earlier in 2017, Chinese Angel was officially selected by Miami Independent Film Festival.