Meet The Team


  • Tom McMahon, Managing Director

    Having graduated from Trinity College Dublin with an Honours Degree in Civil Engineering, Tom went on to post-graduate study and was awarded an M.Sc in Engineering with Honours in 1989.

    Tom worked as a design engineer with with a firm of consulting engineers up to completion of his MSc. He was involved in road, bridge, traffic, transportation and mining projects. He then moved to London and worked as a Design Engineer with L G Mouchel and Partner Consulting Engineers in their new London office. He was involved in a variety of projects including structural inspections, road design, drainage design and civil and structural analysis. He went on to join Nuclear Electric as part of the project management team on Sizewell B Nuclear Power Station where he was responsible for site supervision, programme monitoring, quality assurance and general project management. Tom subsequently joined MDM with responsibility for the management of construction of the sub-sea Landfall and Gas Compressor Station in Scotland as part of the Scotland – Ireland Gas Interconnector Pipeline. Following this project Tom joined MDM in Dublin as Technical Director and is now Managing Director of the company.

    Tom has been involved in a broad spectrum of projects but has specific expertise in offshore and terrestrial cables and pipelines including telecommunications, power and pipeline projects.

  • Jim McMahon, Director

    Jim studied Quantity Surveying and Construction Economics and received his degree from Trinity College in 1994.

    Jim worked as an in-house Quantity Surveyor with afirm of consulting engineers and in 1990 he was involved in setting up and establishing McMahon Design and Management Ltd. In the period from 1990 he was involved in the preparation and development of Quality Assurance and Project Management procedures for Gas Interconnector 1 (Scotland to Ireland). He was a key member in the Project Team in Scotland with particular responsibility for Contract Cost Control and Programme Management on both the 80km/30” cross-country pipeline and the £40 million Compressor Station at Brighouse Bay. On his return to Ireland in 1995 he brought his experience to bear on the promotion and development of new markets for MDM.

    He has been involved in the design and project management of projects such as the T-50, a 42km 12-way duct infrastructure around Dublin, the 100km of duct network for Inland Fibre Telecom, the selection, planning, design and installation of landfalls at Dollymount and Anglesey, and the feasibility and planning of a cable route across north Wales.

  • Thomas J. McMahon, Senior Engineer

    Tom McMahon graduated in Civil Engineering from University College Galway with an Honours Degree and was awarded a scholarship to Cornell University, New York where he completed an M.Sc in Engineering. He is a Chartered Engineer, a Fellow of the Institution of Engineers of Ireland and a Life Member of the American Society of Civil Engineers.

    Tom was originally involved in Transportation Planning, Traffic Studies and Road / Bridge Design. He subsequently became involved in major civil works in both Ireland and the UK. Some of the more interesting projects in which he has played a lead role include the original planning and feasibility studies for the Eastern By-Pass in Dublin, the feasibility and planning for the East Link Toll Bridge, the Mallow Street Bridge across the Shannon at Limerick, project manager on the 220km Cork – Dublin gas pipeline and project manager on Gas Interconnector 1 from Dumfries & Galloway to Dublin. Other work in the UK includes a strategic role in the proposed Halite Gas Storage project in the salt deposits at Fleetwood, a large diameter high pressure gas pipeline to connect with the NTS and in proposals for an LNG Terminal at Anglesey with a 100km sub-sea pipeline to Fleetwood.

    Public appointments include Chairman of a Public Inquiry on a Foreshore Licence at Dingle, Chairman of the Government Task Force on Multi-Storey Buildings following the Raglan House gas explosion and Chairman of the Gas Standards Committee, TC5, of which he continues to serve as a member, at the National Standards Association of Ireland.

  • Rory Ryan, Project Engineer

    Rory Ryan graduated from University College Dublin with an Honours Degree in Civil Engineering, continued immediately to post-graduate research in UCD and was awarded a Masters of Engineering Science. Rory is a Chartered Engineer and a member of the Institution of Engineers Ireland.

    Rory worked as a lecturer and laboratory demonstrator in Dublin Institute of Technology for a period during completion of his MSc. Following graduation Rory began working as a design engineer in the water department of PH McCarthy and Partners in Dublin. He was involved in pipelines, civil works, site investigations and other water related projects. Rory then spent a year working as a water engineer in Kenya where he was involved in the development of drinking water projects with a number of community groups.

    On returning to Ireland, Rory joined MDM where he has been involved in a wide range of projects including road and junction design, traffic assessments, bridge inspections, landfall studies, subsea cable routing, telecoms infrastructure and contract administration.