Gerry was elected to Letterkenny Town Council in 2004 and re-elected in 2009. He was elected Mayor of Letterkenny in 2011 and was elected to Donegal County Council in May 2014. Gerry was elected Chairperson of the Committee of the West North West Regional Health Forum in 2014 and is involved in a number of Committees with Donegal County Council.

Gerry is also a member of the Board of the Aura Leisure entre in Letterkenny.

Gerry is heavily involved in local community work, working as an Outreach and Development Worker with Abhaile Aris since 2002 and has been a Director of Letterkenny CDP since 2004.

Gerry enjoys cycling as a pastime and is a member of Letterkenny Cycling Club and also Chairperson of Glencar Celtic Football Club.

Gerry was appointed Mayor of Letterkenny Municipal District Council in June 2015.