This build assuming you have Arcane Avenger if you don't, use this build here

After [Hemorrhage] come out, it is the best choice here. [Zymos] have force impact = free slash

(Primed) expel mod is must have in any kind of DoT (dmg over time) build, cause it's apply twice (140.25% increment with prime and 69% with non prime on any dot dps). If you dont have primed, nomral expel is good.

Crit mod have twice effect on this specific weapon, so cram up as much crit as possible are better, thus if you have riven, look for crit stats ( preferrably cd)
After update 31.0, both bonus crit chance and bonus crit dmg got nerf, still have double effect but not multiplicative on critical chance. That make Crit chance less effective with 5% base cc
Flat crit buff is essential because it also have double effect (for example: arcane avenger give 90% crit chance instead 45%). Use it if you can (arcane avenger, [Harrow] buff, [Cat's Eye]). So either you use flat crit buff or not use crit at all (replace [Primed Target Cracker] with [Primed Fulmination])

The weapon have innate tox (spore) so one cold mod is enough to make viral

With the bug [Galvanized Shot] do unintended multiplier dmg to other +dmg source (hornet strike, secondary arcane ...), galv shot should be slot too. Until De fix it (Doubt), i will keep it for now
Source: https://forums.warframe.com/topic/1286481-galvanized-damage-per-status-affecting-target-mods-not-working-bug-list/