Tiit has worked in different capacities in 1997-2005 and 2005-2008, the Hansabank group board member and director of the service of Eesti Energia AS, responsible for energy trade, sales and customer servicing.

In these years carried out important projects and achievements: energy trade organization and the organization of work on the construction, energy, commercial brokerage and portfolio management subsidiary, the purchase and the successful commencement of work in Finland, Estlink sea cable delivery and putting into service of Eesti Energia AS Latvian and Lithuanian subsidiaries of creation and the work has started and the wireless Internet service KÕU introduction and supervision.

Tiit has graduated Tallinn University of Technology in Mechanical Engineering in 1993 and received a degree in Estonian Business School in 1998 and 2003 and an MBA degree from finantserialalt.