I'd like to adapt the Endless Clients system to help me find high-paying projects for agencies like ours (15-20 individual company). 

Our two primary focuses right now from a prospect perspective are:
  • Engineering firms, 11-50 person company
  • Startups with seed / series A funding
Using the Endless Clients system, I'd like to target these as we have great reference websites for both.

For a boolean search via Google, what might be some terms / search sequence phrasing we could implement to get into both niches?