The singer worked as a pilot at the Gatwick-based firm for a number of years before being hired in the corporate position, TTGLive reports.
Dickinson said: "This is a marketing role aimed at delivering the Astraeus message and business proposition directly to what is a relatively tight and targeted audience of people and decision-makers in aviation.
"I'm a communicator, clearly I have a background in creative media, and I'm an airline captain, so it all makes great sense and I relish the challenge."
Chief commercial officer Shaun Monnery added: "Bruce is a great communicator, he knows the aviation industry inside-out from both technical and commercial perspectives.
"In a demanding industry he is a man who can cope with pressure, whether as a 757 captain or in front of 50,000 Iron Maiden fans, or senior airline and aviation managers."
> Bruce Dickinson: 'Metal should rule world'