Senior Mechanical Design Engineer\nLocation: Southampton Area (Hybrid)\nEmployment Type: Full-Time\nOverview\nWe are seeking a Senior Mechanical Design Engineer to join a forward-thinking building services consultancy in the Southampton/Fareham area. This is a senior, hands-on role leading the design and delivery of innovative and sustainable mechanical building services across commercial, residential, education, and healthcare projects.\n The Senior Mechanical Design Engineer will take ownership of mechanical design solutions, mentor junior engineers, and collaborate closely with clients and multidisciplinary teams to deliver high-quality, integrated outcomes from concept through to completion.\n\nKey Responsibilities\n\nLead the mechanical design of building services systems, including HVAC, heating, cooling, ventilation, and domestic water systems\nProduce, review, and approve calculations, technical specifications, drawings, and reports\nCoordinate effectively with clients, project teams, and other engineering disciplines to ensure seamless project delivery\nMentor junior and intermediate engineers, promoting technical excellence and best practice\nEnsure all designs comply with UK building regulations, CIBSE guidance, and sustainability standards\nRepresent the consultancy in client meetings, design reviews, and workshops\nContribute to business development activities and support continuous improvement initiatives\nCandidate Profile\n\nDegree in Mechanical Engineering or Building Services Engineering (BEng, MEng, or equivalent)\nChartered Engineer (CEng) or working toward chartership (IMechE, CIBSE, or similar)\nMinimum 5+ years of consultancy experience in mechanical building services design\nStrong technical knowledge of HVAC and mechanical building services systems\nProficiency in Revit, AutoCAD, Hevacomp, IES, and other relevant design tools\nExcellent leadership, project management, and communication skills\nProven experience managing complex projects and guiding multidisciplinary design teams\nWhat’s on Offer\n\nCompetitive salary with bonus and benefits package\nHybrid working model promoting flexibility and work–life balance\nCareer development and structured support toward chartership\nExposure to varied, high-profile projects across multiple sectors\nCollaborative, innovative, and supportive work environment\nThis is an excellent opportunity for a Senior Mechanical Design Engineer to take a leading role in shaping mechanical design solutions and mentoring a team within a respected consultancy. Join us as a Senior Mechanical Design Engineer and make a tangible impact on sustainable, high-quality building projects