Principle Mechanical Design Engineer

Job Title: Principal Mechanical Engineer - Building Services
Location: Norwich, UK
Salary: Up to £75,000 per annum
Contract Type: Permanent, Full-TimeWorking
Pattern: Hybrid (with potential for one day per week in the office)
Sector: MOD, MOJ, Residential, Commercial, Educational
Role OverviewWe are seeking an experienced and forward-thinking Principal Mechanical Engineer to join our building services team in Norwich. This senior role offers the opportunity to lead mechanical design across a diverse portfolio of projects, including MOD, MOJ, residential, commercial, and educational sectors.You'll play a key role in shaping technical delivery, mentoring junior engineers, and driving sustainable, low-carbon design solutions. With flexible working and the option to be in the office just one day a week, this position offers both autonomy and impact.
Key Responsibilities

Lead mechanical design and specification of HVAC, public health, and energy systems
Deliver projects from concept through to completion, ensuring compliance with UK regulations and client requirements
Coordinate with multidisciplinary teams including electrical, architectural, and structural consultants
Provide technical leadership and mentorship to junior engineers and technicians
Attend client meetings, design reviews, and site inspections
Contribute to fee proposals, resource planning, and project programming
Ensure designs are delivered on time, within budget, and to a high technical standard
Support the development of low-carbon and energy-efficient mechanical strategies
Maintain strong relationships with clients, contractors, and stakeholdersCandidate Profile

Degree in Mechanical Engineering or Building Services Engineering (or equivalent)
Chartered Engineer status (or working toward) with a relevant institution (e.g., CIBSE, IMechE)
Minimum 8 years' experience in mechanical building services design
Proven experience delivering projects in MOD, MOJ, residential, commercial, and educational sectors
Strong knowledge of UK building regulations, BS standards, and design codes
Proficient in design software such as AutoCAD, Revit, Hevacomp, IES, and Microsoft Office
Excellent communication, leadership, and client-facing skills
Eligible for UK security clearance (MOD/MOJ requirement)Benefits

Competitive salary up to £75,000 per annum
Flexible working with potential for one day per week in the office
Pension scheme and annual leave package
Professional development and chartership support
Collaborative team culture and meaningful project workWhat you need to do now

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