OSD Web Design team are inspired, dedicated, hardworking, and talented.
Catriona Walsh - Managing Director
Determined and with a vision of providing our clients with the information to succeed online. Catriona's background is in marketing, eMarketing, business planning & development and sales. She has acquired significant experience in business management, market research, market planning, design development, business & project planning and web design & development.
Marie Harkin - Creative Director
Marie has been working in the IT industry for over 15 years and during that time has amassed a broad range of skills, including design & branding consultation, web design, website usability & accessibility, SEO search engine optimisation, Google Analytics, Social Media marketing, Email Marketing, Google AdWords, etc.
Marie is passionate about the web and new technologies available, and she strives to make the experience of using those applications easy and engaging.
Her previous work experience has included a post as web developer for WWW Communications Ltd Sligo and was employed by LAKE Communications International as a Web Developer.
Victor Leonard - Technical Director
Victor has over 18 years experience in Internet development specialising in the analysis, design and development of client applications for the Internet or Intranet with a web based, user friendly front-end, that can be connected to more powerful informational back-end systems.
Victor MIAP - is a Member of the Institute of Analysts and Programmers and embraces the internet as part of life for its freedom, interconnectivity and mobility of both information and systems and constantly strives for a better user experience, integrating systems and mobile technology.
Previous projects include developing a fully functional online application for a US firm specialising in Internet communications solutions for the medical industry, also researching electronic commerce projects including shopping carts, commerce servers, card authorisation networks etc.
Before joining OSD, Victor worked for LAKE Communications on Integrated Voice & Data Solutions (developing and programming embedded systems for PABXs and Routers) for SME's.
Graham Glynn - eBusiness Consultant
Graham’s background is in professional web design, marketing and training and has been working in the industry for over 11 years. Self-motivated and results-driven with broad ranging practical work experience in demanding, customer-focused service environments. Graham has well-developed communication skills with the ability to liaise effectively with people at all levels of computer literacy.
Mark McCullagh - Web Developer & Technical Support

Mark graduated with a Degree in Software Development from the Institute of Technology in June 2008 and joined the development team of OSD in December 2008. He is extremely creative who, when presented with a technical problem, produce ideas and develop them into solutions.
Mark specializes development and customization of websites and web applications. He also continually updating his skill base with a number of programming specific online courses on web applications and languages such as PHP, MySQL, JavaScript, HTML, XML, etc.
Eirin O'Connor - Client Services
Eirin is responsible for client and sales relationships and servicing.
In her role of Client Services, Eirin's contribution is one of communication consultancy, workshop facilitation, and information architecture ensuring that the communication objectives of our customers are met and that the OSD promises made in pitch are delivered and customer expectations are exceeded.
Barry Walsh - Social Media & Digital Marketing
Barry joined the team at OSD in 2012. With marketing trends changing every day in social media and digital marketing sector rest assured Barry will make sure your company is utilising every available and productive avenue to display your business and brand. His role as OSD Project Manager liaising with the Client and the Development Team to ensure the process from conception to completion runs smoothly and is the one of the main contacts throughout the process.
Oliver Nevin - Web Design & Development Trainee
Oliver is joining the business as a trainee.
Meet the OSD web design team!
With over 10 years in web design, development and online marketing, call the experts 071 91 70024 based in Sligo, Ireland; with web design clients in Sligo, Mayo, Roscommon, Leitrim, Donegal and nationwide in Ireland.



