Hi, I’m relatively new to Engi PvP as well (~400 games) and I can recommend some “pro” builds that are tried and true for effectiveness.
Nade/Bomb Point Assault (Teldo):
http://gw2skills.net/editor/?fcAQJAqelIqiY38ynF1LJyoCdGoC5lIF5nl95hcxWQIA-ToAAzCuIaS1krJTTymsNNWY+B
Condi-based build with great offensive setups using chill, stun and knockdown to deliver bomb condis, as well as great control with shield to interrupt heals. Nades offer a safe and effective teamfight option although you have very little escape.
Mightstack Teamfighter (Chaithh):
http://gw2skills.net/editor/?fcAQJAqalIqiYnvSyF1LJyoCdGoC5lIF5n+95Bb9gQIA-ToAAzCuI0RFkLIjOycs5MWYKC
You have blocks and protection and you can also switch out Elixir R for more personal safety. This build has more burst and less control with ~12+ might stacks constantly.
HGH (Ostrich Eggs):
http://gw2skills.net/editor/?fcAQJAqalspiYH5SdF17ICoC5loHPGlNZfewWPIEC-ToAAzCuI0RFkLIjOycs5MWYKC
This is not the precise build (I forgot…). You have the maximum amount of might stacking with this build and you blow people up incredibly fast, although you also get blown up just as quick.
Omega Ragnarok Dragonfist (Lady Steamhawke):
http://gw2skills.net/editor/?fcAQFAUl0piYnpSyF17IyoHdGptZgKkXfewWtFEC-TkAg0CnIKSVkrITRyisFNsA
Again not the precise build but what I use… It is a Static Discharge variant using Grenade Barrage for a quick burst after Magnet/Net Shot. It is easy to dodge but you can setup in a teamfight. Rifle Turret Detonate + Surprise Shot procs 2 SDs.
Standard (somewhat) SD:
http://gw2skills.net/editor/?fcAQFAUl0pqdnpSyF1LJxoHdm0iGki86XRFy/nCsF-TkAg0CnIQShkDJDSSksINsA
Maximum SD burst with a stun break. Always make sure to have fury on you (Medkit great) so that everything crits for a huge spike.
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