I played terra mystica for the first time recently as the engineers. I decided to pick good bridging starting locations, build a stonghold and a bridge the first turn, and spend the rest of the game accumulating as many points as I could from the bridges. I got boxed in the second turn and completely destroyed in terms of points. The engineers low starting resources and few workers from dwellings seem to imply that the ability to build bridges without with workers is extremely powerful.
What strategy should I use when playing as the engineers?