Born in Biała Podlaska, Borysiuk made his debut in Ekstraklasa on 23 February 2007 at the age of 16 years and 213 days, becoming the second youngest footballer ever to play for Legia.

[1] He is also Legia's youngest ever goalscorer, notching his first goal for the club at the age of 16 years and 265 days on 19 April 2008, in a 0–2 away win over Odra Wodzisław .

[5] On 10 March 2014, Boriysiuk made his Volga debut in a 5–1 away defeat to Amkar Perm, in which he replaced Artur Sarkisov inside only twenty-three minutes.

[7] On 19 July 2014, Borysiuk made his Lechia Gdańsk debut in a 2–2 draw against Jagiellonia Białystok, in which he played the full 90 minutes.

Although, he failed to score once in his loan spell at Lechia Gdańsk, Borysiuk managed to feature in every Ekstraklasa fixture for the 2014/15 campaign.

[10] On 21 February 2016, Borysiuk made his comeback for Legia Warsaw in a 2–1 victory over Zagłębie Lubin, in which he replaced Stojan Vranješ in the 32nd minute.

[11] On 22 June 2016, after only featuring thirteen times for Legia Warsaw, it was announced that Borysiuk would join English side Queens Park Rangers on a three-year deal.

With Lechia winning the Polish Cup at the end of the season and finishing in a record equaling 3rd place Borysiuk knew that chances would be limited in the squad for him.