



Gary O' Sullivan IEng HNC B.Eng MCIBSE MIEI MASHRAE.
Managing Director
Gary is a highly motivated professional with over fifteen years project management & design experience in the biotech, pharmaceutical, industrial, commercial and residential sectors. He has a proven track record in the design, coordination and management of mechanical, process, electrical and hvac projects. During his career Gary has worked on significant projects and with several blue chip manufacturing companies such as Alexion, Allergan, AbbVie, Abbotts Diagnostic Division, Alkermes, Medtronic, Mylan and Zimmer Biomet.

Jonathan Madden B. Eng
MechanicalProject Manager
Johnny joins OSENG after eight years abroad working in United Arab Emirates.
Johnny is dedicated Mechanical Engineer with 16 years of work experience across sites. Expertise in designing Mechanical & HVAC systems, supervising installation & Commissioning of HVAC, cooling towers, generators, gas lines, electrical transformers & switch gear, L.V. and H.V. Systems. Self-motivated, dynamic engineer with multi-disciplinary experience in project management, project planning, project budgeting and cost control.
Deft in ensuring strict compliance to Health & Safety Standards.

Andrea Coen BSc. Arch
BIM Manager
Andrea joined OSENG in 2020 bringing 10 years of experience in design, detailing using BIM tools within the Semi-Conductor, Life Science and Commercial Industry.
Her skills include the production of 2D to 6D
Construction & MEP Models, the creation of Revit families, clash management, site surveys as well as production of drawings. Andrea is responsible for the integration of Augmented and Virtual reality tools to assist OSENG develop Mechanical, Electrical and Process solutions for their clients.
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