Fleury’s departure is not entirely unexpected. Computer Business Review understands that he told JBoss employees some time ago that he would not be returning from paternity leave, which began in early December and had been scheduled to end in March.

In a statement Red Hat said that Fleury had left the company to pursue other personal interests, such as teaching, research in biology, music, and his family.

A statement from Fleury read: I have done what I can to help Red Hat succeed. People need to understand that open source is a tsunami that is transforming the software industry in its wake and its inevitability is now well beyond challenge or the force of individual personality.

Following Red Hat’s acquisition of JBoss Fleury became senior vice president and general manager of Red Hat’s JBoss division but his aggressive enthusiasm and intensity always made it likely that he would get itchy feet without the reigns of power.

Some frustration was evident in an interview he gave to eWeek in November 205 in which he complained about a lack of investment in the JBoss research and development budget following the JBoss acquisition.

Fleury started the JBoss project in 1999 and founded JBoss the company in 2001 and led the company up Red Hat agreed to pay up to $420m for it in June 2006.