FTA, a take on entry/mid/senior level distinctions I haven't heard before:

"If you are the guy asking for help from people below, to your side, and above you, you’re probably an entry-level engineer. If you frequently need support from those above you (excluding C-level and executive support, that my friends are a whole new level of hell), there’s a good chance you are a mid-level engineer. If you find yourself supporting and being supported by those at your side, you are likely a senior or lead level engineer."