We have activated Google+ for Ceva users. Many are inviting in their Circles people they know from Ceva.
However, it happens sometimes that someone having the same name appear in the list.
This is because the Google+ directory lists everybody who has a Google+ account. Maybe also you have already received an email from someone whit a gmail.com address, and that this person has associated his private gmail address with a Google+ account.
In case you are not sure, ask the person.
The best option not to be counfound by someone who add you in its circles, is to make this different.
I suggest that you mark your profile photo with the word 'CEVA' or 'PRO profile' or something similar.
There is a creative kit in the Photo section of Google+ (https://plus.google.com/photos)
Go to 'Your Albums' > 'Profile photo' and click the photo you have used for your profile. When it appears full screen, a menu 'Edit' > 'Creative Kit' launches an online edit of your picture. Add Text and format it. Make it big enough to be read when the picture is as small as a profile photo, save.