He has over 10 years of experience in the field of environmental conservation and community engagement. He is a certified environment impact assessment (EIA) expert with National Environment Management Authority (NEMA). He is the founder of a community-based organization called Wafuraha Group based in Dandora – home of biggest dumpsites in Kenya – to utilize his environmental knowledge and implement local actions like waste management, community clean ups, tree planting, school education programs and handicrafts. Charles is a co-founder of Ken Green Marketing Cooperative Society promoting the formation of over 50 Green Enterprises that promote green enterprises that address climate change, for example producing briquettes as an alternative source of fuel to replace 30% of the unsustainable produced charcoal. Charles has mobilized other community-based organizations to form the Dandora Environment Consortium which organized nature trails along the Nairobi River and tree planting expeditions. He was part of a team that formed a community driven initiative dubbed the Nairobi River Waterfalls Conservancy with the main aim to conserve the river basin ecosystem. He works with Voices 4 Change (V4C) as the Project Coordinator for the Growth4Change that fights poverty through urban farming and green growth. Charles volunteers at Greening Kenya Initiative Trust (GKIT). He is at the frontline of the Green Schools Program and works with many schools in Kenya to establish tree nursery, start smart kitchen gardens and tree growing in schools and degrade Riparian reserves. He organizes Green champions countrywide to form CBOs and help to come up with bankable and transformative community projects.