Build your future with Mason Hayes & Curran

We are a versatile and progressive top-tier business law firm with a staff of over 670 people including 124 partners. With offices in Dublin, London, New York and San Francisco, we offer opportunities to work alongside some of the brightest legal minds in the industry.

Your journey continues here

We are committed to developing the next generation of lawyers. Our Internship Programme is the sole route to a traineeship at the firm. It gives us the opportunity to get to know you and gives you the opportunity to get to know us.

From day one, interns work alongside their mentors and partners. You will be involved in meaningful work and gain valuable insight into life at a leading commercial law firm.

Learn more about the Internship Programme

A traineeship designed for growth

For our trainees, we offer a structured programme designed to support growth and development. Throughout the traineeship, trainees benefit from the guidance of senior colleagues who take an active interest in their growth and success.

Learn more about the Trainee Programme

As an intern or a trainee, you will be part of a collaborative and supportive team. You will be encouraged to take ownership of your development while building lasting relationships across the firm.

What makes us different

Gain hands-on experience from day one by taking on meaningful work for industry-leading clients. You will develop your skills in a supportive environment that builds confidence and encourages you to grow.

Work closely with partners, senior associates and trainees across the firm. Our open-door culture gives you direct exposure to experienced professionals. You will see first-hand how the top legal teams support clients on complex matters.

Benefit from structured training and ongoing development, with regular feedback and mentoring throughout your journey. We are committed to giving you the experience and support you need to build a strong foundation for your legal career.

Join a collaborative and inclusive firm where people are encouraged to be themselves. From social events to wellbeing initiatives, you'll quickly feel part of the team.

Applications for our summer 2027 internship will open on 8 September 2026.