Great question!
Being an engineer myself, this was a personal pain point and I wanted to solve it, but the key question was whether or not machine learning would help. Thus, most of the time was spent deploying the tech with early adopters, refining the algos, and trying to better understand the value.
What I learned was that our message resonated with some companies more than others. Working with those guys and getting some proof-points on the value is what kept us going!