Senior / Principal Mechanical Building Services Engineer

Country:  United Kingdom
Position Location:  Brighton, UK
Contract Type:  Permanent
Work Pattern:  Full Time
Sector:  Built environment
Discipline:  Building services
Job Ref:  2417
Recruiter Contact:  Chris Raybould

Mott MacDonald


We’re a global engineering, management, and development consultancy. 
Our purpose is to improve society by considering social outcomes in everything we do, relentlessly focusing on excellence and digital innovation, transforming our clients’ businesses, our communities and employee opportunities. 


A fundamental part of this is respecting each person’s differences and striving to meet their needs. 


We are proud to be a one of Glassdoor’s top employers to work for in the UK, as well as being recognised as a Top Inclusive Company in the UK.


Our values: Progress, Respect, Integrity, Drive, Excellence. 

About the business unit  
The Buildings and Cities Unit (BNC) has a major presence in Mott MacDonald's regional offices throughout the UK and mainland Europe, providing a wide range of diverse and transferable cross-sector skills across five key Sectors; Advisory, Built Environment, Energy, Transportation and Water. We also provide local services to customers and technical leadership to the rest of the Group in these sectors.


Overview of role
We are seeking a qualified Senior / Principal Mechanical Building Services Engineer to support and develop the project delivery, technical capability, and profitability of our Building Services team in Brighton in support of a wider team in Croydon, London and Cambridge.  The buildings services team comprises 110 staff within the multidisciplinary buildings team of 550 staff in London and the Southeast Division. 


The Building Services team enjoys successful client relationships in Stations; Airports; Residential, Defence; Healthcare; Local Authority; Education; and Higher Education. We are keen to grow our expertise and size of team. 


Our projects are regional, national and global with opportunities for travel in support of such. 


We are seeking a candidate who will help build client relationships through excellent project delivery and communication skills and help in generate more work from clients.    


The candidate will be self-motivated and capable of delivering high quality designs to time and budget with minimum supervision. As part of the wider practice network the team has developed reputation for work winning, successful project delivery and technical excellence.  


We are looking to support a candidate with long-term career goals in both design and management. 


The successful candidate will typically be responsible for; 

  • All aspects of assigned project design work. 
  • Driving technical excellence in sustainability and safety in our designs. 
  • Support graduate/early career professionals, act as technical mentor. 
  • Working and liaising with other disciplines whilst delivering projects. 
  • Management of internal and external stakeholders. 
  • Support to senior managers running the commercial and contractual side of projects. 
  • A range of small to large projects within our building services team. 
  • Working autonomously within a team carrying out building services projects.  
  • Potentially managing several projects and the work of others. 


Candidate Specification
We are actively recruiting a diverse workforce that is reflective of the communities we serve. We recognise that differences in ability, skills and experience are a strength and encourage applications from people of all backgrounds. 


The candidates will: 

  • Be CEng and a member of the IMechE or CIBSE. 
  • Be based in our Brighton office for a minimum of three days a week. 
  • Travel to projects and offices across the London and the Southeast as required with occasional national and global travel. 
  • Have a track record in building services mechanical engineering design and specification using relevant industry software (NBS Create, IES, TAS and REVIT etc). 
  • Have a track record of working in teams. 
  • Have excellent communication skills, including report writing and presentations. 
  • Have an ability to work collaboratively, both internally and with external partners and sub-contractors. 
  • Being responsible for the design and delivery of a wide range of projects. 
  • Up to date knowledge of current building regulations, legislation and standards applicable in building and infrastructure design. 
  • Self-motivated, with the ability to work on own initiative and the confidence to make decisions. 


We would like the candidate to, or aspiring, to: 

  • Manage engineering teams comprising building services engineers, structural engineers and civil engineers.   
  • Take financial control of project fees. 
  • Train graduates/Early Career Professionals (ECP). 
  • Understand client and market requirements. 
  • Bid for work. 
  • Maximise profitability of projects, monitoring against budget, reacting and anticipating potential problems and communicating in line with client expectations. 
  • Lead Mechanical elements of one large project or a portfolio of smaller projects. 




Equality, diversity, and inclusion 

We put equality, diversity, and inclusion at the heart of our business, seeking to promote fair employment procedures and practices to ensure equal opportunities for all. We encourage individual expression in our workplace and are committed to creating an inclusive environment where everyone feels they can contribute.



We want you to perform your best at every stage in the recruitment process. If you are disabled or need any support to enable you to apply or attend an interview, please contact us at and we will talk to you about how we can support you.


Agile working 

Happy to talk Flexible Working and how we can support your responsibilities beyond the workplace.


We offer some fantastic benefits including:


Health and wellbeing

  • Private medical insurance for all UK colleagues.
  • Health cash plan to support you with every day health costs and treatments.
  • Access to Peppy, providing free support from menopause experts for all UK colleagues.
  • A variety of wellbeing support is available through our comprehensive wellbeing program, including access for you and your family.
  • Ability to flex your salary to opt into a wide range of health benefits, many of which can be extended to your family too.

Financial wellbeing

  • We match employee pension contributions between 4.5% and 7%.
  • Life assurance equal up to 4 x your basic salary, with an option to increase the level of cover to 6 x your salary.
  • Our income protection scheme provides a financial benefit, as well as absence and return to work support due to long-term illness or injury.
  • Flexible benefits, including increased life assurance cover, critical illness insurance, payroll saving and will writing.
  • As an independently owned business we share the financial success of the business with all our colleagues in various ways including annual bonus schemes.


  • A minimum of 33-35 days holiday each year, inclusive of public holidays and dependent on level, with the ability to buy or sell leave through our flexible benefits programme.
  • Holiday entitlement increased to a minimum of 35 days after 5 years’ service.
  • Variety of employee saving schemes and discounts from high-street retailers.

 Enhanced family and carers leave

  • Enhanced family leave policies, including 26 weeks paid maternity and adoption leave, and two weeks paid paternity/partner leave.
  • Our shared parental leave matches maternity leave meaning we pay up to 24 weeks at full pay.
  • Up to five additional days leave are provided for those with significant caring responsibilities, two of which are paid.

 Learning and development

  • Primary annual professional institution subscription.
  • A broad range of opportunities to enhance both technical and soft skills through mentoring, formal training, and self-development options.

Networks, communities, and social outcomes

  • Join a wide range of groups including our Advanced Employee Networks which support our LGBTQ+, gender, race and ethnicity, disability, and parents/carers communities.
  • Make a difference within our communities through our social outcomes.

Apply now, or for more information about our application process, click here.