Johnathan has dedicated twenty years to the drilling industry, with his first four years at Transocean and fifteen years at Seadrill. In January 2023, he joined Northern Ocean in search of new challenges. With extensive experience both offshore (eleven years) and onshore (nine years), he has managed semisubmersibles, jack-ups, drillships, and semi-tenders worldwide. Notably, he spent thirteen years working on the African coast, specifically in Ghana, Ivory Coast, Equatorial Guinea, Nigeria, Angola, and Namibia.