Armstone Okumu is an accomplished professional in the sales and business development sector, currently serving as the Zonal Sales & Collection Assistant Manager at ENGIE Africa since October 2024. Previous experience includes roles as Field Sales Manager at Apollo Agriculture, Area Sales Manager at ENGIE Energy Access, and Field Sales Manager at Solar Panda. Armstone's career began as a Regional Manager Assistant at Azuri Technologies, followed by a Business Development Officer position at Letshego, and a Financial Advisor role at Britam. Educational qualifications include a Master of Business Administration in Strategic Management from Mount Kenya University, a Certified Public Accounts qualification, and a Bachelor's degree in Public Administration and Political Science from Maasai Mara University, complemented by studies in Financial Accounting at the University of Luxembourg.