Embark on Your Engineering Odyssey with Union Sanitary District. Junior, Assistant, or Associate Engineer Position Available. Salary Range. Junior Engineer: $109,021 - $143,091. Assistant Engineer: $121,135 - $158,990. Associate Engineer: $135,907 - $178,378. Annually, Plus Exceptional Benefits. Be Part of Our Visionary Team – Build Your Future Today. Are you ready to channel your engineering experience into meaningful community service and profe...