John Sisk & Son (Sisk) has announced the appointment of Leo Martin to the newly created role of Chief Operating Officer (COO) for its Infrastructure Division.

Leo will join the company in January 2026, reporting directly to Group CEO Paul Brown.

The Infrastructure Division has been established to provide dedicated executive leadership across Sisk’s expanding civil engineering operations in Ireland and the UK. It comprises two business units: Sisk Infrastructure and the recently acquired Farrans business. Alan Rodger and Dominic Lavery will continue in their roles as Managing Directors of their respective units, reporting to Leo.

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Leo brings more than 35 years of experience in civil engineering, with a track record of driving sustainable growth, innovation, and team development on complex infrastructure projects across Ireland and the UK. He is recognised for his integrity, technical expertise, collaborative leadership, and ability to scale engineering operations while maintaining a strong safety culture.

Paul Brown, CEO of Sisk, said: "We are delighted to welcome Leo in the new year and to learn from his experience in the civil engineering sector across Ireland and the UK as we look to grow our business in this space. Leo is incredibly well known and respected throughout the industry, and we look forward to welcoming him on board in the new year."