noun
team member
A member of a team, used in sports, business, or project contexts.
新しいチームメンバーを紹介します。
Let me introduce the new team member.
彼はプロジェクトの重要なチームメンバーだ。
He is an important team member for the project.
Variant with interpunct; less common but still seen.
メンバー is a more general term for 'member' of any group, while チームメンバー specifically refers to a member of a team.
Loanword from English 'team member'.