PoB at the time of the video:

https://pobb.in/m-F2LmUxeKH0

Note: my character is using a chaos resistance The Light of Meaning unique jewel. This is in no way mandatory for the build - if you replace the ice golem with a chaos golem, you will cap your chaos res that way easily.

This is the state of the build after a couple days of playing SSF Mercenaries. The DPS is about half of the theoretical potential of the build, should be able to reach over 10m single target in SSF gear BEFORE mercenaries' auras.

poe.ninja character:

https://poe.ninja/builds/mercenariesssf/character/100purified-0667/CEOofTheAtlas