Brehon team

A Dedicated Team

We are a small close-knit team, who are passionate about the success of the brewery. Here’s some insight into the people behind our great beers…

Seamus McMahon

(Founder and Business Development)

Brehon Brewhouse is the brain child of Killanny local, Seamus McMahon and he modified a farm that’s been in his family for over 100 years to facilitate the creation of a micro-brewery. Seamus’ has over 40 years of experience in farming and has provided milk for Baileys since (Insert Year). This experience enabled Seamus to jumpstart his success in the brewing industry as the principles of good farming lend themselves well to the principles of good brewing.

Siobhan McMahon

(Brand Director)

As Brand Director, Siobhan leads the Brehon Brewhouse Marketing team and has built our brand to what it is today. Siobhan holds an Arts Degree in Fashion from the University of Ulster and is also a graduate of the Limerick School of Art and Design. As well as her role as brand custodian, Siobhan is responsible for managing the Brehon Brewhouse Tour Experience. Outside of her work at the brewery, Siobhan is a keen gardener and it’s her we have to thank for the beautiful flowers that adorn the brewery grounds throughout the seasons.

Julio Diana

Master Brewer

Julio hales from Sao Paulo, Brazil. He creates a range of beer styles with NEIPA and Kettle Sours being his favourites – although his stouts and porters have won various awards!
Julio is not only a talented brewer but also a qualified Engineer. When Julio is not brewing you will find him tinkering with aircraft. He has a keen interest in aviation and pilots his own twin seater.

Jim Malone

(Brewing Operations Manager)

With almost 40 years of experience as an operative Engineer Jim is a key member of the Brewhon Brewhouse team. He is an expert in the brewing process and strives to achieve the highest quality standards resulting in consistently great beers.

Sean Keys


Sean is champion of the Brehon Brand in the North West and West of Ireland. Never afraid to do the footwork, Sean as introduced Brehon Brewhouse beers to a number of retail chains and independent stores, pubs and restaurants, throughout Ireland. Orignally from Donegal, Sean is a great man to talk and is truly dedicated to letting the nation know about Brehon Brewhouse Beers.

Adrian Holland

(Brewing Operative)

As Jim’s right-hand man Adrian is a key member of the brewing team ensuring that output targets are met every day. Adrian is a man of many talents from painting to farming but he’s developed a real talent for managing the brewing process and keeping the rest of us on schedule!

Job Opportunities

We are always on the look out for new talent to join our team. If you are passionate about craft beer and are interested in roles in Sales or Production, please feel free to forward your resume to us!