In January, 2009, after training in Europe and few years of practice, Tosin returned to Nigeria and joined James Cubitt Architects where she worked on the Nigerian Liquefied Natural Gas (NLNG) projects as lead architect, a project which Tosin, in an interview granted Future Lagos' Ayo Denton, said taught her involvement of stakeholders during design process.[1] Tosin worked with James Cubitt for four years.