Mechanical Design Engineer - Building Services Are you an experienced Mechanical Design Engineer with a passion for delivering high-quality MandE solutions across commercial and industrial environments? Do you enjoy working in a fast-paced setting where innovation, precision, and low-carbon design are central to every project? Hays are partnering with a well-established engineering business that is expanding its design team. This is an excellent opportunity to join a forward-thinking organisation delivering complex, sustainable building-services projects across multiple sectors.About the Employer Renewable energy integrationLow-carbon heating and energy-efficiency solutionsDecentralised energy and multi-utility networksCommercial heating, industrial plumbing, and mechanical engineeringThey work across Commercial, Industrial, Education, Housing, and Local Authority, sectors, delivering everything from ASHP systems to high-efficiency commercial plant rooms.Role OverviewYou''ll play a key role in design, coordination, and technical delivery while contributing to best practice and supporting junior team members.Lead the design, planning, and delivery of mechanical and electrical engineering projects.Produce and review technical drawings, calculations, and specifications.Conduct site visits and surveys to support design development.Coordinate project activities, resources, and programme milestones.Prepare high-quality documentation, reports, and technical records.Ensure ..... full job details .....