Guild Wars 2

My Engineer is very nearly 80, and I’m looking to get into roaming in WvW, I’m just curious as to what is the go-to build, is it the standard condi build with kits?

http://metabattle.com/wiki/MetaBattle_Wiki

Depends on what you are comfortable with and how you play.

I would say the most common is Nades or bombs/Toolkit/Elixer gun,
alternative : Nades or bombs/Toolkit/Rocket boots.
Obviously condi base with Rabid gear, some people like Rabid with a mix of Dire.

But there are alternatives.
Celestial rifle meta is nice.
I prefer HGH Cele Rifle above it though.

The above is considering ROAMING builds, NOT zerging.
For zerging you do not want to be using condis as your only DPS stat.