Senior HVAC Mechanical Engineer

BES works with world‑leading organisations in the pharmaceutical, life science and healthcare sectors to create cutting‑edge cleanrooms, laboratories and other sophisticated environments. Committed to innovation and excellence in all we do, our specialist services encompass consultancy, design, construction, commissioning and validation.

Although reporting to the Design Lead you will have responsibility for the following mechanical / HVAC design processes from concept through to detailed design including involvement in commissioning support as required.

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• Design through all RIBA Stages.
  
• Safety, Health and the Environment.
  
• Quality.
  
• Support to Procurement teams.
  
• Support for Programming and Planning.
  
• Design support through construction.
  

In line with our core business, you would have in depth knowledge and competence in the detailed design of building services systems for complex validated facilities, which meet CGMP and ISO 14644 requirements such as:

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• Research and QA / QC laboratories
  
• Sensitive research facilities
  
• Pilot scale manufacturing
  
• Full scale manufacturing
  
• Potent processing
  
• Sterile manufacturing
  

You will be a key member of a multi‑service design and installation team, ensuring clear communication and high‑quality outputs while supporting junior engineers.

The role requires proficiency in producing detailed procurement‑ready designs, including sizing, selection, space planning and routing, supported by CAD draughtsmen.

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• General & process specific supply & extract ventilation
  
• Fume & dust extract
  
• Clean room ventilation
  
• Comfort air conditioning
  
• Process specific heating / cooling / dehumidification and humidification
  
• Chilled water
  
• LPHW / MPHW & HPHW , Steam & Condensate
  
• Building Management Systems
  
• Natural Gas
  
• Compressed air
  
• Nitrogen & Special Gases
  
• Domestic & process H&CWS
  
• Above ground drainage
  
• Provide necessary information to support statutory authority submissions.
  

You will identify client requirements, liaise with specialist providers, and attend client meetings to finalise designs.

The role is mainly office‑based with site visits for surveys.

Most projects are in pharmaceutical, healthcare, and food sectors, delivering detailed designs for research facilities and complex sterile manufacturing environments.

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• HNC qualified in Building Services, ideally educated to degree level
  
• HNC (ideally degree) in Building Services
  
• Skilled in turnkey project design across HVAC, mechanical, and electrical systems
  
• Strong knowledge of air conditioning, ventilation, chilled water, LTHW, and steam
  
• Familiar with IES, AutoCAD, and Microsoft Office tools
  
• Experienced in pharma and healthcare builds, especially labs and cleanrooms
  
• Fully conversant with CDM and ISO 9001 standards
  
• Team‑focused, customer‑oriented, and confident liaising with senior stakeholders
  

We offer a range of benefits designed to support your life in and out of work, some of which include:

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• Matched or contributory pension scheme
  
• Online GP service, 24 hours a day, 365 days a year
  
• Employee assistance programme
  
• My Rewards portal, access to 1000’s of retail discounts
  
• Life assurance
  
• Cycle to work, salary finance and give as you earn schemes
  
• Reward and recognition scheme
  
• 25 days annual leave plus bank holidays
  
• Hybrid working and flexible hours
  

In addition, this role offers:

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• Our Salary sacrifice EV Car Scheme
  
• Private health care and health care cash plan for you (and your family)
  

We want to be an employer of choice and a great place to work, attracting diverse and talented people, who join us and make a difference. We’re one of the Top 100 UK companies actively supporting and recruiting army veterans. Our ENABLE inclusion networks bring together people who have a shared passion, to help create an environment where everyone belongs.

Our values help to shape our culture and how we work with one another. We recruit with these values in mind, to ensure your aspirations, and ways of working, align with ours.

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• We’re responsible and go further for our people, clients, communities and the planet
  
• We’re open and seek new and better ways of exceeding expectations
  
• We’re together and as one team; the whole is greater than the sum of the parts
  
• We’re ambitious and embrace opportunity, to lead essential infrastructure services for life
  

Whether you’re a trainee, apprentice or graduate, or progressing through your career, our people benefit from industry recognised programmes, training and development.

It’s an exceptional time to be a part of M Group.

Please note: Occasionally, job adverts might be closed before the stated closing date. Do apply as soon as possible to ensure your application is considered.

For certain roles, successful candidates will be subject to 3rd party background checks as part of the hiring process. Some roles require drug and alcohol testing as part of induction and onboarding.