I am very lucky to be at the right place at the right time. The positions I've held over the past 10 years have been through networking. Keep close ties to your management team, vendors and consultants. Always show your best and be friendly but (but not too friendly). Always discuss strategy to streamline work for your team or the organization. When they move on they will think of you if there is a need for your skills. I've moved up from a "technologist" to the Director of IT from moving jobs through contacts.