Ashworth said: "We were looking to strengthen our business development capacity."
The company posted a £5.5m loss in 2002; Dengenis has worked on a strategy to revamp the business since then.
Doughty has been head of research and development at Asite since 2002. He has experience in software product development in the construction and property industries.
Austin has previously held roles with Babcock International and Esso Petroleum.