I obtained an interview with the development team leader and CEO of a startup company. At the end of the interview, the development team leader asked me to send him an email with websites' links to some of my previous projects, which I did.
They seem like they're thinking to move forward with me in that position.
Today, I received a feedback from him for my previous email telling me that he found some form validations issues with 2 of my projects, asking me if he could have access to the back-end of one of my websites/web applications (which I developed for my current employer) as that may give him better insights into my skill.
I can provide him with credentials for one of my projects, but I don't think this is a professional move to make. Neither is his request. No one has requested this before.
I'm thinking about replying with a polite negative answer, without explaining why. And telling him that I'm open for any kind of test, case study, or even an IQ test. Or doing another interview via Skype, so I can talk even deeper about my projects and some databases structures.
I could make a Skype shared session with me taking control and browsing one of the back-ends, but I don't think this is a good idea.
I really want this job and appreciate your help.
Update
I made it clear to the interviewer that these are not my personal projects: that I developed them but do not own them.
Important Edit
I'm not tending to give the credentials to anybody. I use my github profile to show my coding skills, because I own them 100%.
I'm totally aware of the ethical and legal stuff. I will not betray my current employer ever. And I never did. Please stop questioning My Personal Ethics.