Abstract: This research paper endeavored to establish on how strategic engineering management was affecting performance of all commercial banks in Nyeri, County, Kenya. The findings realized that commercial banks should endevour to embrace the best strategies that are aimed at propelling their banking systems with a view to satisfy their customers, increase productivity and overall enhances their profitability. Hence, when commercial banks deployed strategic engineering management occasioned through strategic implementation, strategic development, strategic planning and strategic performance of all of commercial banks in Nyeri County, Kenya was wedged.