The Moroccan-themed event will be held in a marquee at Fonmon Castle in Wales in July and is the company's second annual summer staff event.
Source Software marketing director Alex Mclauchlan said: "We liked the idea of doing an additional event to the Christmas party. Last year was the first year we did it and it was very well received by staff. Green Ant handled it then and carried it off with panache. On the strength of that, we appointed them to run this year's event. The business has been doing pretty well, bucking the trend despite the recession, so we wanted to say than you to the staff."