You are a Beaver (ISTJ)!
The natural handyman of the types, you are great at fixing and maintaining any manner of objects and systems. Cautious and measured, you don’t like to take unnecessary risks. In fact, you don’t like to take any risks at all. For you, caution is the better part of valor. Through diligent work and careful accounting, you’re an important part of any organization you commit to. And commit you do: 100%!