[1] Previously working for Sparta Prague and various Czech national teams as an assistant manager, he assumed his first spell as a first team manager at Olomouc in October 2015, replacing Leoš Kalvoda.

[3] On 3 May 2017, Olomouc secured their return into the top flight with a 4–1 victory at Znojmo,[4] after which Jílek was offered a new contract to continue his role at the club[5] and signed to stay for another year.

[6] The newly promoted team finished fourth in the top league and qualified for the 2018–19 UEFA Europa League under his leadership, an achievement that won Jílek the Czech Manager of the Year award.

[7] In April 2019, being both the youngest and the longest-serving Czech First League manager at the time, he signed a new two-year contract with the club.

[9] On 18 February 2020 Jílek was dismissed from the position of first team head coach.