[3] McKiernan is the host of a chart-topping podcast called Love and Courage,[4] which profiles leading thinkers and activists from around the world.

Previous guests have included Christy Moore, Amanda Palmer, Peggy Seeger, Johann Hari, Stanislaus Kennedy, Ivor Browne, Frances Black, and Lynn Ruane.

McKiernan was a co-founder of the Possibilities civic engagement initiative, which hosted the Dalai Lama's 2011 visit to Ireland.

McKiernan received a BA with distinction in Business and Management with HR from the University of the West of Scotland and later worked as a youth worker, web designer, researcher, and community organiser.

[10] He is also one of the founders of the Gaelic Voices For Change movement that involves sports stars engaging on social issues, including homelessness.