Groothuizen is a youth exponent from
AFC Ajax. He made his professional debut at Jong Ajax on 8 December 2014 in an
Eerste Divisie game against
RKC Waalwijk. He replaced an injured
Norbert Alblas after 88 minutes in a 3–2 home win. On 31 July 2019, Groothuizen joined
Danish 1st Division club
Vejle Boldklub on a contract until June 2022. After two years in Denmark, Groothuizen returned to the Netherlands, signing a one-year deal on 14 July 2021 with
FC Emmen with an option for one further year. On 10 January 2023, Groothuizen joined
Danish 2nd Division club
AB. ==International career==