Gikiewicz was born in Olsztyn. In July 2008, he moved to Jagiellonia Białystok.[3] In August 2010, he was loaned to OKS 1945 Olsztyn on a one-year deal.[4] He returned to Jagiellonia Białystok half a year later.[5]
In January 2011, he joined Śląsk Wrocław on 4.5-year contract.[6]
In April 2014, German club Eintracht Braunschweig announced the signing of Gikiewicz for the 2014–15 season.[7] In August 2016, Gikiewicz transferred to Freiburg.[8]
In June 2018, Gikiewicz moved to Union Berlin signing a two-year contract. The transfer fee paid to Freiburg was reported as €200,000.[9] On 7 October 2018, Gikiewicz scored a 94th-minute equalizer against 1. FC Heidenheim in the 2. Bundesliga.[10]On 1 July 2020, he signed with Bundesliga club FC Augsburg.
Over three weeks after his contract with Augsburg had expired, on 22 July 2023, Gikiewicz joined Turkish side Ankaragücü on a one-year deal with an option for another season.[11] On 1 February 2024, he left the club by mutual consent.[12]
On 13 February 2024, Gikiewicz returned to Poland to join Widzew Łódź until the end of the season, with an option to extend his deal for another year.[13] Brought in as a replacement for the injured Ivan Krajčírik who joined Widzew just a month prior, Gikiewicz enjoyed a good start to his stint. He recorded four clean sheets in 11 league games before having his deal extended for a further year on 10 May.[14]
^"Rafał Gikiewicz". FC Augsburg. Retrieved 1 September 2022.
^Rafał Gikiewicz at Soccerway
^"Rafał Gikiewicz blisko Jagiellonii" (in Polish). 90minut.pl. 4 July 2008. Retrieved 27 January 2014.
^"Rafał Gikiewicz wypożyczony z Jagiellonii" (in Polish). wp.pl. 30 August 2010. Retrieved 27 January 2014.
^"Ekstraklasa. Rafał Gikiewicz wraca do Jagiellonii" (in Polish). sport.pl. 3 December 2010. Retrieved 27 January 2014.
^"Rafał Gikiewicz w Śląsku" (in Polish). igol.pl. 10 January 2011. Retrieved 27 January 2014.
^"Eintracht Braunschweig verpflichtet Rafal Gikiewicz" (in German). eintracht.com. 17 April 2014. Retrieved 18 April 2014.
^"SC verpflichtet Braunschweigs Gikiewicz" [SC signs Braunschweig's Gikiewicz] (in German). kicker. 5 August 2016. Retrieved 5 August 2016.
^"Union Berlin: Gikiewicz kommt aus Freiburg". kicker Online (in German). 16 June 2018. Retrieved 17 June 2018.
^"Unions Torwart köpft in der Nachspielzeit den Ausgleich" (in German). Went. 7 October 2018. Retrieved 8 October 2018.
^"Rafal Gikiewicz Ankaragücü'müzde!" (in Turkish). Ankaragücü. 22 July 2023. Retrieved 22 July 2023.
^"Rafał Gikiewicz odchodzi z Ankaragücü". 90minut.pl (in Polish). 1 February 2024. Retrieved 1 February 2024.
^"Rafał Gikiewicz nowym bramkarzem Widzewa Łódź" (in Polish). Widzew Łódź. 13 February 2024. Retrieved 14 February 2024.
^"Gikiewicz 2025!" (in Polish). Widzew Łódź. 10 May 2024. Retrieved 10 May 2024.
^"Four players receive international call". fc-union-berlin.de. FC Union Berlin. 31 May 2019. Retrieved 3 June 2020.
^Na ręce mam cały mój życiorys – żona, syn, rodzina, medal weszlo.com
^"Union Berlin - Hertha Berlin 1-0 Atac pirotehnic! Haos în derby-ul capitalei Germaniei" [UNION BERLIN - HERTHA BERLIN 1-0 Pyrotechnic attack! Chaos in the derby of the capital of Germany] (in Romanian). Gsp.ro. 3 November 2019. Retrieved 4 November 2019.
^"Clipul momentului! Fratele lui Gikiewicz i-a fugarit de unul singur pe ultrasii care au sarit in teren sa se bata! VIDEO" [The clip of the moment! Gikiewicz's brother ran after the ultras who came on the field to fight! VIDEO] (in Romanian). Sport.ro. 3 November 2019. Retrieved 4 November 2019.
^"Rafał Gikiewicz". 90minut.pl. Retrieved 16 January 2018.
^"Rafał Gikiewicz". Soccerway. Retrieved 16 January 2018.