He is also a Member in the Education, Culture and Social Services Committee; Roads, Public Works and Transport Committee; Justice, Legal Affairs and Public Service Committee and Liaison Committee.
Before he joined Nyandarua County Assembly as an MCA, Hon Ngamau was the manager of PanAfrican Schools for 20 years. He was also a prominent farmer in Gathanji Ward and served as a chairman of several cooperative societies. He has also been in the Board of Management of Passenga Secondary School and has been a lead elder of the Africa Inland Church.
The Hon. Member founded Midwest College which was the first to teach computer studies in Nyandarua and Laikipia Counties in 1993 and has been nurturing talents among the young people.
He takes pride to have mentored over 75 young couples- acting as bestman in weddings, negotiating in dowry ceremonies, mediating conflicts in families and restoring broken families.
Hon. Ngamau holds a Diploma in Human Resource Management from Kenya Institute of Management and is pursuing a Degree in Leadership and Governance from CMD college- a constituent college of Jaramogi Oginga Odinga University.
He went to Baharani and Chamuka Primary Schools before joining GG Rumuruti Secondary School and Koelel High School for his O levels and A levels respectively.