Education Background: holds both Bachelor and Master of Laws degrees from the University of Nairobi.
She is the Deputy Chief Justice following her appointment in October 2016. In May 2017 she was elected by her colleague judges of the Supreme Court as a Commissioner at the Judicial Service Commission.
In the same year, she was appointed to serve as the Judiciary Ombudsman and the Chair of the Implementation Monitoring Committee of the Sustaining Judiciary Transformation (SJT) strategic blueprint.
She was admitted as an advocate of the High Court of Kenya in 1984. She was appointed as a Judge of the High Court in 2007 and rose to the Court of Appeal in November 2012 and subsequently to the Supreme Court in 2016.
Prior to joining the Judiciary she worked as a senior legal officer in insurance; board secretary in a State regulator; deputy chairperson of the Energy Tribunal; and later director on the board of a public service provider until her appointment as a Puisne Judge in 2007.
In August 2018 Justice Mwilu was arrested on suspicion of corruption, failure to pay tax, abuse of office and improper dealings with a bank. In November 2021 she secured a victory in court after a three-judge bench quashed process of removing her from office over allegations of misconduct.
