ranker

/ˈræŋkər/
noun
  1. A person who assigns a rank or position to someone or something in a list or order.
    • As a ranker for the magazine, she evaluated hundreds of restaurants each year.
    • The online ranker uses user votes to create a list of the best movies.
    • The ranker at the competition had to decide the top three contestants.
  2. A person who holds a particular rank, especially in a military or organizational hierarchy.
    • He was a low ranker in the organization, but he worked hard to get promoted.
    • The high ranker in the army was respected by all the soldiers.
    • Only a top ranker in the company gets access to the executive floor.