Arch. Koech holds a Bachelor of Architecture Degree from the University of Nairobi. He is an alumni of Starehe Boys Centre and is registered by the Board of Registration of Architects and Quantity Surveyors (BORAQS) to practice Architecture.

Arch. Koech is currently the Principal Architect and Managing Director of the House of Architecture in Eldoret, having previously worked at Studio Partners Nairobi and Archgrid Systems. He also served as a resident Architect and Head of Infrastructure Department at Koitaleel Samoei University College. He is also a Board Member at Ziwa Technical Training Institute and Kosirai Girls High School. He is a member of the Architectural Association of Kenya (AAK).