Did Geoffrey Mosiria lose his job just as he prepared to challenge his boss for Nairobi’s top seat? Nairobi Governor Johnson Sakaja has dismissed the outspoken county chief officer days after Mosiria declared his intention to run for governor in the 2027 General Election, raising questions about the timing of his exit.
Mosiria’s dismissal was announced , through a county reshuffle communicated by County Secretary Machel Waikenda. Zipporah Njeri Mwangi was appointed to take over his Public Participation, Citizen Engagement and Customer Service docket in an acting capacity.
Mosiria joined Sakaja’s administration as Chief Officer for Health Facilities in 2023 before being transferred to the Environment department in August 2024. In November 2025, he was moved again to Public Participation, Citizen Engagement and Customer Service, where he remained until his dismissal.
However, Mosiria claims his fallout with Sakaja began in December 2023, when he allegedly lost key responsibilities in the Health department. He also accused the governor of sidelining him and frustrating his efforts to serve Nairobi residents. These allegations have not been independently established.
The political tension intensified on October 11, when Mosiria publicly declared his interest in challenging Sakaja for the governorship, branding himself “Mr Fix-It” and promising to address Nairobi’s longstanding problems.
Although the county’s dismissal notice did not directly link his removal to his political ambitions, the timing has fuelled speculation about whether his decision to challenge Sakaja contributed to his exit.
Mosiria has since vowed to continue pursuing his political ambitions, setting the stage for a potentially fierce contest as Nairobi prepares for the 2027 elections.
