Sorry to ask it this way, but where is the obfuscation? Without executing it, without using -MO=Deparse on it, here is what I can say:

• It prints "Just Another Perl Hacker\n"
• The white space in the ;-quoted string gives it away instantly
• You shifted the alphabet one step to the right to "encode" this
• The next s/// (or s;;;) capitalize the words
• Everything after the print is cosmetic and has no particular use

You are not using many tricks, apart from special quotes...