Senior Mechanical Design engineer in Cardiff

Reference: 4830865Job ID: 5422512Posted: 2026-10-29Closing date: 2027-01-28Location: CardiffSalary: 40,000 - 60,000 DOE (per annum)Job type: PermanentWorking pattern: Full timeIndustry: ConstructionCompany: HaysConsultant: Josh WebbHays office: Bristol — 2nd Floor, 3 Temple Quay, Temple Back EastPhone: 07368696177Email: Josh.Webb1@hays.comYour new companyHays is working with an established Building Services consultancy that is continuing to grow its Cardiff operation. The local team currently consists of approximately 14 professionals, with further growth planned.The business has a strong presence across the public sector, delivering projects within healthcare, education, universities and colleges, Welsh Government, leisure and heritage.Your new roleYou will join the team as a Mechanical Design Engineer, with the opportunity to take ownership of projects and work with a good level of autonomy.You will be involved in mechanical building services design through the RIBA stages to approximately Stage 4/4a, producing detailed designs before projects progress to contractor-led full design.The technical environment includes Revit/BIM, Hevacomp and Amtech, alongside internal calculation tools and support from a dedicated CAD team.What you'll need to succeed The role would particularly suit an experienced Senior Mechanical Design Engineer with a strong building services background who is comfortable managing and running projects independently.Experience across healthcare, education or wider public-sector projects would align particularly well with the consultancy's current portfolio. What you'll get in return40,000 – 60,000 salary, dependent on experience and project backgroundHybrid workingCore hours of 9:30am – 4:30pmHealthcare and dental careCycle-to-work schemeEV charging scheme25 days' annual leave, increasing by two additional days after five yearsProfessional development and membership opportunitiesA clear progression route from Senior Engineer directly to Associate.The opportunity offers an excellent platform for an experienced Mechanical Engineer looking for greater project ownership, high-quality public-sector work and a clear route for career progression.What you need to do now If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now. If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career. #4830865 - Josh Webb