Hayden joined Gilbert Walker in 2024. Prior to joining Gilbert Walker, he was a solicitor at MinterEllisonRuddWatts. He has particular experience in construction disputes.
While at university, Hayden was a finalist and runner-up in the Greg Everard, John Haigh, and Stout Shield Mooting competitions. He was a style editor for the Auckland Law Review and tutored first-law year law. Since graduating, Hayden has continued to tutor at Auckland Law School.