Jardine joined Internacional in 2003, being appointed manager of the under-10s. He took over all the club's youth categories during his ten-year stay, with his last team being the under-20s.
Grêmio
On 24 September 2013, he returned to Grêmio after being named under-17 manager.[3]
On 27 July 2014, after Enderson Moreira's dismissal, Jardine was named interim manager,[4] being in charge for one match (a 2–1 loss against Vitória) before the appointment of Luiz Felipe Scolari. Subsequently, he was named assistant, but ended the year as the coordinator of the under-15s after having altercations with Scolari.
São Paulo
In February 2015, Jardine moved to São Paulo and was appointed at the helm of the under-20s. He was interim manager on two occasions (in 2016 and 2018) before being named assistant in March 2018. On 11 November 2018, he was named interim until the end of the campaign, replacing sacked Diego Aguirre.[5]
On 25 November 2018, Jardine was appointed manager of Tricolor for the 2019 season.[6] The following 14 February, however, he was removed from his manager role, but remained at the club.
On 16 June 2023, Club América reached an agreement with Atlético San Luis and appointed Jardine as their new manager. He became the third Brazilian manager in the club's history after Jorge Vieira and Paulo Roberto Falcão.[9]
On Jardine's competitive debut, América suffered a 2–1 home defeat to FC Juárez in the opening match of the Apertura tournament. He led the team to a first place finish in the regular phase standings and on a 19-game unbeaten run (14 wins and 5 draws) before suffering a 2–0 defeat to his former side Atlético San Luis (winning 5–2 on aggregate) in the second leg of the Apertura semifinals.
On 17 December 2023, Club América won its 14th championship, making Jardine one of only five managers in the history of the club to win the league trophy in their debut campaign. Six months later, Club América won its 15th championship.
On 15 December 2024, Club América won its third consecutive championship under Jardine, thus becoming the first tricampeón of Mexican football in its current format.[10]
