[2] In April 2018, he joined Kenyan Premier League side Tusker FC, as assistant coach to Robert Matano.
[4][3] On 9 April 2021, Okere was appointed to serve as the assistant coach of the Kenya women's national football team to David Ouma,[5][4] however on 12 April, he was appointed as head coach of the Harambee Starlets team replacing David Ouma, after he had parted ways with the Kenyan Federation on mutual consent.
[6][7][8] On 20 October 2021, in his first match in charge of the team, he led them to a 8–0 victory over South Sudan in the 2022 AFWCON qualification First round.
[12][13] Okere was appointed as interim head coach of Vihiga Queens in late August 2021 after their long-serving coach Alex Alumirah parted ways with the club just one week to the 2021 CAF Champions League regional CECAFA qualifiers.
In December 2024, Tusker Chairman Charles Gacheru confirmed that Okere will remain as head coach through the end of the season.