EPOCH - the Future Templar sci fi series

In the far distant future only the wealthy are protected by Troops, soldiers in enhanced mechanical suits who protect them from the wild animalistic rovers known as the Mob. 

Citizens huddle in skyscrapers afraid to to go out after dark and controlled by an omniscient computer.

 A disillusioned scientist idolizes Templars, a start up military that rose from the post apocalyptic ruins to protect survivors. He builds a time portal to retrieve a Templar to save his world. 

But if everything he learned about the Templar’s was wrong the amplified warrior may not want to save the world, he wants to rule it.