Ok so I didn’t really want to post this because I’m fine with people thinking the engineer is bad because I get to keep it my little secret.
However in the spirit of sharing knowledge try this, instead of thinking that the engineer is burst class you gotta think of them more as a support role, CC machine in sPVP.
Use this build
http://gw2skills.net/editor/en/?fcAQJAqOl0p6ZX8yldEJ0D8zwULRF0vPPkr2KCB
In team fights run around dropping all your variety of bombs and switch back to your shield pistol if they start to focus you. This build has so much built in protection it really takes a lot to bring you down.
Remember to switch back and forth between bomb and healing kits and continue dropping them all throughout the fights. Run with a good warrior and its a pretty untouchable combo.
Bottom line – If you’re trying to do a bunch of burst damage with an Engineer you’re doing it wrong.