rainmaker

やり手、顧客集めのうまい((金の雨を降らせるような)事業[商売]のやり手、上得意客を持つ営業マン, トップ弁護士)

Ex

  • He is a senior partner and top rainmaker at a famous Manhattan law firm.
  • The university hired high-salaried, experienced professors who were considered research-money rainmakers.

Reference source

  • https://blog.goo.ne.jp/eigoyasan/e/6164870e93e298b25d84e26b6043077a
  • https://nikitoki.blog.ss-blog.jp/2010-06-13-2
  • https://dictionary.cambridge.org/ja/dictionary/english/rainmaker