Mr Mwaruma is a newly elected Senator of Taita Taveta County. Mr Mwaruma was elected the County Senator on an Orange Democratic Movement (ODM) ticket in the 2017 general elections after defeating Joyce Wanjala Lay of Jubilee Party and six other contestant. As Senator, Mr Mwaruma aims to defend devolution, protect the interests of the County, play oversight role and support Bills that would help in transforming Taita Taveta. He is also keen on advocating for accountability in the use of County resources. Before joining politics, he was a teacher and a professional development Tutor at the Teachers Service Commission. He also served as the Assistant Executive Secretary for the Kenya National Union of Teachers (KNUT), Taita Taveta branch, where was involved in addressing trade disputes. Mr Mwaruma attended Kenyatta High School in Mwatate for his O-level before proceeding to Kenyatta University where he graduated with a Bachelor of Education (Maths and Sciences). He also holds a Masters of Education (MEd), and Mathematics Teacher Education from Aga Khan University in Dar es Salaam.