Principal Building Services Electrical Engineer

Location/s: London, Cambridge UK

Recruiter contact: Andrea Gaffney

Mott MacDonald is a global engineering consultancy with over 20,000 employees across more than 50 countries.

Buildings Unit

The Buildings Unit (BLD) has a major presence in Mott MacDonald’s regional offices across the UK and mainland Europe, providing diverse and transferable cross‑sector MEP skills across five key sectors: Advisory, Built Environment, Energy, Transportation and Water.

Overview of the role

We are seeking a Principal – Building Services Electrical Engineer to lead, grow and inspire our multidisciplinary MEP team. The role is ideally based in our London office, with collaboration across regional teams in Croydon, Brighton and Bristol, and opportunities to contribute to national and international projects.

Key sectors

• Commercial
• Aviation
• Rail
• Transport Buildings
• Judicial
• Residential developments
• Sports & Recreation
• Data centres
• Healthcare
• Defence and civic infrastructure
• Technical Advisory

Responsibilities

• Deliver electrical design for major projects from concept through to detailed design.
• Coordinate multidisciplinary teams and collaborate with architects and civil engineers.
• Build and maintain strong client relationships, ensuring high‑quality service delivery.
• Contribute to business development, including work‑winning and bid leadership.
• Champion innovation, sustainability, and best practice in engineering design.
• Support senior managers in running the commercial and contractual side of projects.
• Work autonomously within the team carrying out building services projects.

Essential qualifications

• Degree‑qualified Electrical Engineer with a strong background in Building Services.
• Chartered Engineer (CEng) status with IET, CIBSE, or equivalent professional body.
• Proven experience delivering projects within the built environment with sustainable solutions.
• Extensive MEP design experience across concept and detailed design stages.
• Demonstrated ability to lead electrical teams and coordinate with other disciplines.
• Delivery of coordinated MEP 3D design models.
• Leader of electrical elements of one large project or a portfolio of smaller projects.
• Track record in building services electrical engineering design and specification using relevant industry software (NBS Create, Amtech, Lighting and REVIT, etc).
• Excellent communication skills, including report writing and presentations.
• Up‑to‑date knowledge of current building regulations, legislation and standards applicable in building and infrastructure design.

Desirable qualifications

• Experience in sectors such as healthcare, infrastructure, aviation, rail, residential or data centres.
• Knowledge of the London market and broader UK.
• Experience in work‑winning and bid support.
• Familiarity with digital engineering tools and emerging technologies.
• Up‑to‑date knowledge of current building regulations, legislation and standards applicable in building and infrastructure design.
• Experience of training graduates/Early Career Professionals (ECP).
• Experience driving profitability of projects, monitoring against budget, reacting and anticipating potential problems and communicating in line with client expectations.

Additional expectations

• Willingness to travel within the UK and occasionally internationally as required.
• Commitment to high standards of corporate governance and project delivery.

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

Whilst security clearance is not expected for application, candidates may be requested to undertake such for UK defence 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 and are committed to creating an inclusive environment where everyone feels they can contribute.

Accessibility

We want you to perform your best at every stage in the recruitment process. If you are disabled or need any support, please contact us at and we will discuss how we can support you.

Benefits

Financial wellbeing

• We match employee pension contributions between 4.5% and 7%.
• Life assurance equal up to 4 × your basic salary, with an option to increase the level of cover to 6 × your salary.
• Income protection scheme providing 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.

Employee Ownership

• Our employee ownership model means no external investors, just us, creating a culture of shared success.
• Our employees have a stake and a voice in our business, giving them a direct connection to our success through personal and group performance bonuses.
• As your career grows, so does your stake, recognising your long‑term impact and contribution.
• Your voice matters, with the opportunity to connect directly with senior leadership through formal channels to help shape our future.
• For senior roles you will have a direct pathway towards ownership from day one.

Health and wellbeing

• Private medical insurance for all UK colleagues.
• Health cash plan to support you with everyday health costs and treatments.
• Access to Peppy, providing free support from menopause experts for all UK colleagues.
• Health and wellbeing programs available 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.

Lifestyle

• 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.

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