Senior Mechanical Design Engineer (Building Services)

Client Overview

Our exclusive client is a global leader in energy, digital, and industrial transitions, delivering bespoke solutions across infrastructure, buildings, and processes. With a strong presence in the UK and internationally, this organisation is renowned for its commitment to innovation, sustainability, and operational excellence. The company operates across a diverse portfolio, including data centres, clean rooms, pharmaceutical facilities, and other mission critical environments, ensuring high-performance engineering solutions that meet the most demanding standards.

Role Overview

As a Senior Mechanical Design Engineer, you will play a key role in the design and delivery of mechanical systems for mission critical projects. Reporting to the Principal Mechanical Design Engineer, your responsibilities will include:

• Developing detailed mechanical designs for HVAC, chilled water, and specialist systems.
• Supporting project delivery from concept through to construction and commissioning.
• Collaborating with internal teams, clients, and external consultants to ensure design integrity.
• Conducting technical reviews, calculations, and system simulations.
• Assisting in mentoring junior engineers and contributing to continuous improvement.

You will be involved in high-value, technically complex projects where precision and reliability are paramount.

Requirements

• Degree qualified in Mechanical Engineering or other relevant subject.
• Proven experience in mechanical design engineering within mission critical sectors.
• Strong technical knowledge of HVAC, chilled water systems, and cleanroom design.
• Excellent proficiency in industry standard design tools such as AutoCAD, Revit, IESVE, Hevacomp, etc.
• Excellent project management and communication skills.
• Chartered Engineer status or working towards it (CEng, IMechE or equivalent) is desirable.

Benefits

• £48,000 to £55,000 per annum (DoE)
• Car Allowance
• 25 days annual leave + public holidays
• Life Cover (4 times annual salary)
• Company Stakeholder Pension Scheme
• Private Medical Insurance (including Family Cover)
• 2 corporate social responsibility days per year
• Broad range of learning opportunities, such as professional qualifications, collective/individual training, and personalised support programmes
• Attractive Employee Referral Rewards Scheme
• Access to employee networks
• 24/7 Employee Assistance Program and access to mental wellbeing app

Next Steps

If you're interested in this opportunity, please submit your updated CV or reach out to Lusona Consultancy for a confidential conversation.

If this role isn’t quite the right fit but you’re exploring new opportunities in mechanical design or mission critical sectors, Lusona would be happy to assist you in finding the perfect match.