Nairobi Governor Johnson Sakaja has announced a reorganisation of Nairobi City County’s executive, reassigning several County Chief Officers (CCOs) in a move aimed at improving service delivery across key departments.
In a directive dated April 24, 2026, the governor confirmed that the changes take effect immediately, citing the need to enhance efficiency in sectors such as lands, health, and infrastructure.
“In accordance with Section 45(5) of the County Government Act 2012, the following County Chief Officers have been reassigned,” part of the official communication read.
Among the notable changes, Dr Machel Waikenda, who previously handled Mobility and also served in an acting capacity in ICT Infrastructure, has been moved to the Lands docket while retaining responsibilities in mobility on an acting basis.

Cecilia Koigu, who has been serving in the Lands department, has now been redeployed to oversee ICT Infrastructure. Koigu was among the chief officers appointed during Sakaja’s initial appointments in 2022 and has been instrumental in the lands sector prior to the reshuffle.
Other changes include Eng. Bob Arriemba, who takes up responsibilities in the Works department, while Dr Irene Muchoki transitions from Medical Services to Gender and Inclusivity. Mariam Dubow Dahir has been reassigned from Gender and Inclusivity to Medical Services.
The governor indicated that the reshuffle is part of ongoing efforts to optimise performance within the county government by aligning expertise with priority areas.
“These changes are intended to streamline operations and strengthen service delivery across critical sectors,” the statement noted.
The reorganisation comes at a time when the county government is under pressure to improve efficiency and address challenges facing residents, particularly in urban planning, healthcare, and infrastructure development.
With the immediate implementation of the changes, the affected officers are expected to assume their new roles without delay as the county seeks to boost productivity and responsiveness in public service.
