And at any of those levels, you’re doing what the company is telling you (implementing actual specs vs creating specs).
None of this is specified, there are no specs to execute up front. Much of it is defining the spec yourself and collaborating with the rest of the org to find out if other people agree with the spec.
- implementing the spec for an existing spec (L4)
- creating the spec for a prescribed product (L5)
- recognizing the need for the product in the first place and advocating to make it happen(L6)
Each level feeds the one below it.