I finally had a chance to contribute to the company.
I finally had the opportunity to do something for the company.
■キーワード
貢献 = to contribute
機会 = opportunity (複数形:opportunities)
チャンス = chance
やっと = finally
①I finally had a chance to contribute to the company.
→やっと会社に貢献できるチャンスがやってきた。
②I finally had the opportunity to do something for the company.
→やっと会社のために何かをできる機会がやってきた。