At different times, he was appointed Special Assistant to the Head of State on oil and gas matters, Technical Adviser to the Chairman, NNPC Board, and a Member of the Technical Advisory Committee of the Board of the Nigerian LNG. A onetime Past President of the Nigerian Gas Association (NGA) and a member of the Global Gas Policy Council of the International Gas Union (IGU).
An entrepreneur and a social engineer, Charles Osezua has promoted and founded a number of businesses and NGOs including; the Owel-Linkso Group; Linkso Nigeria Limited – a multidisciplinary service provider to the oil and gas, power and construction industries in Nigeria, Gaslink Nigeria Limited - Nigeria’s foremost gas utility company, Gas Train Limited - a gas development company, building gas infrastructure for gas utilization/monetization in the Niger Delta Region.
Engr. Osezua chairs a number of Boards such as the Governing Council of the Pan Atlantic University, Educational Co-operation Society (ECS) – the founder of the Lagos Business School (LBS), the Institute for Work and Family Integration (IWFI), Cordros Capital Limited, to mention but a few.
He has received a number of national and international honours including the title: Officer of the Order of the Niger (OON), from the Federal Government of Nigeria for his professional excellence and contributions to the development of the Nigerian oil and gas industry; he was honoured with the European title of the Right Honourable Cavalier of the Order of St. Gregory the Great (KSG), by the Pope.
He is married to Gloria Osezua and is blessed with six children and many grand-children.