Available to hire
I’m Cillian McCay, a dual-discipline Mechanical and Electrical Design Engineer with five years’ progressive experience delivering integrated electro-mechanical solutions across aerospace, pharmaceutical, and energy sectors. Currently I deliver these solutions at Collins Aerospace within a highly regulated environment, guiding projects from concept through validation and production. I’m proficient in Siemens NX, SolidWorks, and DraftSight, with strong capabilities in 2D/3D CAD, electrical schematics, wiring and routing, and design validation, and I enjoy collaborating with manufacturing, quality, and supply chain teams to drive continuous improvement.
Experience Level
Work Experience
Mechanical / Electrical Design & Project Engineer at Collins Aerospace
November 1, 2024 - PresentDelivering integrated electro-mechanical design solutions within a regulated aerospace engineering environment, supporting projects across the full product lifecycle from concept through validation and production. Produce detailed 2D/3D CAD models and drawings using Siemens NX; design electrical systems with wiring, routing and connectors; create system layouts; maintain project documentation and revision control; support design verification, prototype testing, design reviews, risk assessments and compliance activities in line with aerospace standards; collaborate with manufacturing, quality, and supply chain teams.
Mechanical Design Engineer at Sepha Ltd
August 1, 2022 - November 1, 2024Produced 2D and 3D CAD drawings for pharmaceutical packaging clients using SolidWorks and DraftSight; designed toolsets for producing, sealing, and cutting pharmaceutical packs; conducted pre-shipment testing; updated existing machine designs to enhance production capability and efficiency; analyzed design briefs for feasibility, environmental impact, and safety; collected and analyzed prototype test data; prepared progress reports and coordinated with project managers and clients.
Mechanical Design Engineer at CHP Mechanical Services Ltd
February 1, 2021 - August 1, 2022Sole and lead design engineer delivering mechanical and electrical design solutions for renewable energy and HVAC projects (£25k to £200k). Produced high-quality 2D/3D mechanical designs; created electrical schematics for HVAC, BMS, lighting, and fire alarm systems; integrated electro-mechanical components into systems; developed energy solutions including Biomass Boilers (150 kW – 1,500 kW), Oil & Gas Boilers, CHP Engines, and Solar PV & Battery storage; ensured compliance with IRBEA, SEAI, SNIPEF, Gas Safe, OHSAS 18001, ISO 45001, ISO 9001, and ISO 14001; tracked materials and travelled to sites to advise on installation.
Service Engineer at Air Energy
January 1, 2020 - February 1, 2021Installed, serviced, and maintained air compressors and related systems across Ireland; performed performance tests and quality inspections; resolved technical faults; attended emergency callouts; maintained inspection and installation records; ensured compliance with relevant legislation and company standards.
Cashier at Fresh Food Centre
September 1, 2019 - February 1, 2021Customer-facing retail role; processed payments, handled returns, and provided product assistance.
General Operative at Irish Waste
November 1, 2018 - September 1, 2019Supported logistics and yard operations; assisted with drainage callouts; maintained yard and sorting line.
Education
Bachelor's Degree — Mechatronic Engineering at Ulster University, Belfast
January 1, 2021 - March 29, 2026Foundation Degree — Mechatronic Engineering at Southern Regional College / Ulster University, Newry
January 1, 2019 - January 1, 2021A-Levels & GCSEs at St. Malachy's High School, Castlewellan
January 1, 2011 - January 1, 2018Qualifications
Industry Experience
Manufacturing, Energy & Utilities, Life Sciences, Other
Experience Level
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