Oh, you're right, I spaced. I've been away from Google for a few years now, and I remembered the titles and Lx being off from each other but had it mixed up. Thanks for speaking up; I was wondering what the deal was with the downvotes.

    * L3 = Software Engineer II, entry level. (There's no Software Engineer I.)
    * L4 = Software Engineer III.
    * L5 = Senior Software Engineer.
    * L6 = Staff Software Engineer.
    * ...