Gigpro does not recommend Pros apply to Gigs that former employers they worked for have posted. Businesses usually do not select former employees for their Gigs, and if they do and you (the Pro) show up, their could be confusion as to why you (the Pro) are there, especially with former co-workers or managers.
*If a Pro is confirmed on a Gig with a former employer and is turned away at the door or cancelled within 24 hours of the Gig start time, TOS compensation is not applicable*