I am an IT professional with over 20 years experience. I have been a network/telecommunications manager (5 years), IT Program Director (4 years), Director of Data Center and Network Services (6 years), Director of Cloud Services (3 years) and Sr. IT Architect (2 years), all for an aerospace/defense company.
Will this be sufficient experience to qualify for the CISSP certification?
It is impossible to determine your experience in information security based simply on those job titles. On the surface, none of those titles show experience in information security. That said, many people doing such jobs have deep infosec experience as part of the job. I recommend you download the full CISSP domain description document (the CBK), and see if you can confirm five years of direct infosec experience in at least two of the eight domains. If so, then you should be solid for earning teh CISSP. Of course, you also have to survive the exam.