Senan began his IT career in 1999 with Gandon Capital Markets (Investec) in Dublin’s IFSC.
In 2000 Senan moved to CNNfn.com in Manhattan, New York City, where he worked primarily with the development team which had responsibility for the CNNfn.com website. Soon after returning to Ireland Senan joined an Irish owned IT Support and Services Company called Typetec where he worked primarily as a Field Service Engineer.
In 2007 Senan was a founding director of Nostra, and began in the capacity of Chief Technical Officer, a position which he has held to the present day. During his time with Nostra Senan has spearheaded some of the most ambitious projects that the company has undertaken, using his technical faculties to design and implement solutions that had rarely been seen in this country.