I played a pivotal role in...

Meaning

I had a crucial and important role in...

Examples

• John: The project wouldn't have been a success without your team.
• Alice: We worked hard, but <b>I played a pivotal role in</b> securing the major contract.
• John: I'm aware of your contributions. The negotiations were very challenging.
• Alice: Indeed. <b>I played a pivotal role in</b> that successful negotiation.