The JDDG team has a valuable international and local background and although it excels in the hospitality sector, it can provide expertise and knowledge across a wide spectrum of design aspects both for new build and for conservation / refurbishment projects.

Our international influences and our ability to approach challenges with perspective, are the source of a wide variety of design solutions. They provide us with an “edge” that confidently makes us able to deal with many design aspects and business challenges.

Based on a thorough understanding of the individual needs of our clients and their industries, our design team is committed to implement the levels of creativity, expertise and design excellence needed to inspire and secure every commercial success.

John Duffy

Architect and Managing Director

Since 1992 John is owner and founder of John Duffy Design Group (JDDG)
Qualified in 1976 as an Architect from Dublin Institute of technology with first class honours, John has over 35 years of experience in Architecture and Design projects worldwide.
He is a member of the RIAI and the RIBA institutes and the recipient of many international design awards.

Kathy Ryan

Director of Interior Design BA (hons) Interior Architecture, Part 1 Arch.

Kathy is an interior architect with over 15 years experience working across the high-end residential, hospitality and commercial sectors, six of those along-side JDDG. Kathy’s passion for design is evident in the attention she pays to detailing and immaculate spatial planning. She leads the interiors team & is responsible for the timely delivery of projects to the highest possible standard.

Marta Martin Valcayo

Project Architect. M. Arch. PGDip BP (EED)

Marta graduated in Architecture at the ETSA Valladolid, in Spain. Since moving to Ireland, she attained a Postgraduate Diploma in Building Performance and is specialized in sustainable architecture
With the JDDG team, she has been working on a wide range of buildings as well as performing daylight analysis to a variety of projects.

Nanetta Sztanko

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