Eng is a common transfer to PM and many of your skills will carry over. I (personally) think age will hurt you but rather help because you have experience and have seen a bunch of failures which you can learn to avoid (this goes well during interviews).
Suggest looking at the rpm program at Facebook or APM (I think this is the name at google) which is for people interested in learning product management but without PM experience.
Suggest looking at the rpm program at Facebook or APM (I think this is the name at google) which is for people interested in learning product management but without PM experience.