plan ‧ ner /ˈplænə $ -ər/ BrE AmE noun [countable]
[ Word Family: noun : ↑ plan , ↑ planner , ↑ planning ; verb : ↑ plan ; adjective : planned ≠ ↑ unplanned ]
someone who plans and makes important decisions about something, especially someone whose job is to plan the way towns grow and develop
urban/city planner
City planners are looking for ways to ease traffic.
Many financial planners will help you shop for insurance.