Parkinson Gray Associates delivers a proven service to some of the leading Consulting Engineering and Contracting businesses within the British construction industry, predominantly across the Building Services, Energy and Sustainability sectors. Our client is an established, multi-disciplinary design practice with a strong UK presence is looking to strengthen its building services team with the appointment of a Senior Mechanical Designer in its Manchester office. With a diverse project portfolio spanning commercial, industrial, mixed-use, residential, and public-sector developments, the firm has a growing reputation for delivering high-quality, sustainable design solutions across the built environment. The engineering division works in close collaboration with architectural and structural teams to deliver integrated and innovative outcomes. Location: Manchester (City Centre) Salary: £45,000 to £55,000 (depending on the experience) Employment type: Permanent The Role This is an excellent opportunity for an experienced mechanical building services professional to take a lead design role on a variety of projects, contribute to technical excellence, and mentor junior staff. You will work on a range of medium to large-scale developments from concept through to construction, including both new-build and refurbishment projects. The role involves full ownership of mechanical design packages, stakeholder coordination, and input into the firm’s sustainability and net zero ambitions. Key Responsibilities * Lead mechanical building services design on assigned projects (HVAC, ventilation, plumbing, LTHW/CHW systems, etc.) * Prepare technical calculations, drawings, specifications, and reports * Ensure compliance with current building regulations, CIBSE guidelines, and low-energy design standards * Coordinate designs with internal architecture and structural teams, as well as external consultants and contractors * Attend and lead client and design meetings as required * Conduct site inspections and provide technical support during construction stages * Guide and mentor junior engineers and technicians * Contribute to internal design reviews, technical development, and QA processes About You Essential Requirements: * Minimum 5 years of experience in mechanical building services design within the UK consultancy or multidisciplinary environment * Proven technical skills in designing HVAC and mechanical systems for buildings * Familiar with UK Building Regulations, CIBSE standards, and energy-efficient design practices * Competent user of design tools such as Revit MEP, AutoCAD, and mechanical calculation software (e.g. Hevacomp, IES, etc.) * Excellent communication skills and experience in client-facing roles * Strong attention to detail and ability to manage multiple project deadlines * Right to work in the UK Desirable: * Experience delivering projects in sectors such as industrial, logistics, commercial offices, data centres, or mixed-use schemes * Understanding of BREEAM, net zero design principles, or similar sustainability frameworks * Working towards or holding Chartered status (CIBSE / IMechE) What’s on Offer * Opportunity to work on diverse, high-quality projects with a collaborative, design-led team * Supportive working culture with strong focus on innovation and sustainability * Long-term career development and clear path to progression * Competitive salary package and flexible benefits If you're a passionate Mechanical HVAC Design Engineer ready to take the next step in your career, we want to hear from you. All applicants must be eligible to work and live in the UK