Overview of Role We are seeking an experienced Principal Mechanical Building Services Design Engineer to join a nationally recognised, award-winning building services consultancy known for technical excellence and leadership in sustainable MEP design. This senior role sits within a growing practice and offers the opportunity to lead complex projects, shape technical direction, mentor teams, and play a key role in delivering low and net zero carbon solutions across commercial, public sector and healthcare projects. Role Responsibilities and Requirements You will: Lead the mechanical design delivery of projects across commercial, public sector and healthcare sectors Act as a senior client-facing technical and commercial lead Manage and coordinate mechanical design teams, mentoring and developing junior engineers Support senior leadership with project planning, resourcing and commercial performance Contribute to business development, bids and long-term client relationships Deliver high-quality mechanical designs using IES / IES-VE, AutoCAD, MagiCAD and Revit Ensure compliance with all relevant standards, legislation and energy efficiency / net zero carbon targets Provide technical leadership on healthcare projects, including guidance on sector-specific requirements Work closely with other engineering disciplines to deliver coordinated, integrated designs Manage multiple projects concurrently, balancing programme, quality and commercial objectives Key Skills and Qualities Needed You will ideally have: BEng or MEng in Mechanical Engineering or Building Services Chartered Engineer status Membership of a relevant professional body (e.g. MCIBSE, MIMechE ) IHEEM membership Strong UK healthcare experience with working knowledge of HTMs and HBNs, or transferable experience (e.g. cleanroom or laboratory design) 5–10 years’ UK-based post-graduate experience within a building services consultancy Proven expertise in mechanical building services design across multiple sectors Strong commercial awareness, including managing project budgets and financial performance Excellent project and workload management skills across projects of varying scale and complexity A confident, professional manner with clients and internal teams A proactive, positive approach with the flexibility to adapt to changing priorities Further Information The business is strongly committed to professional development and career progression, offering tailored training, mentoring, structured development programmes and regular internal CPD seminars to support chartership and long-term growth. If you are a senior mechanical engineer looking to lead meaningful projects, influence sustainable design outcomes and work within a supportive, forward-thinking environment, this role offers a genuine opportunity to do so.