My personal Carrier build for most content (Sorties, Onslaught, etc). Added one D polarity and switched the V polarity for a --

Mod order is important as the prioritized skills go from top left to bottom right. Health / Shield [Regen], reviving and carriers ammo ability are prioritized, but you can change the order based on your preference.

Vacuum is placed near the bottom so that carrier will pick-up items after making sure I stay alive (It cycles through the abilities list fast so don't worry about it not picking up stuff).

[Animal Instinct] can go anywhere as the passive is always active, I mostly use it for finding syndicate marks and those gold Onslaught efficiency things

[Vitality] and Fiber are for bulk. [Redirection] isn't useful as [Carrier] barely goes from base 100 shield to 375. I would prefer to keep [Animal Instinct], but it's up to you.

I also don't run [Sanctuary] as you can just go into operator mod and crouch which is much more effective anyways.

Just as a note I run all of my sentinels without weapons which is why this build does not include striker or carriers crate break mod. I find that they get distracted easily and die more often with a weapon, but you can switch out one of the shield [Regen] mods and [Animal Instinct] for these if you'd like.