Engineers

[kalash29]

where do i find or how do i get engineers to build siege equipment?

 

[Lor Dric]

where do i find or how do i get engineers to build siege equipment?

look at the troop trees

 

[Slayth]

where do i find or how do i get engineers to build siege equipment?

If you have enough renown, you can recruit them from the tavern keeper or bordello keeper.  Otherwise you can follow the troop trees, recruit precursor NPC's and build them up through experience.