Senior Mechanical Building Services Engineer

Mott MacDonald; Greater London; Hybrid; GBP 60,000 - 95,000; Full time

Benefits offered by this job

Hybrid working

Private medical insurance

Pension contributions match

Employee ownership

Bonus schemes

Job summary

Mott MacDonald is seeking a Senior Building Services Mechanical Engineer to lead a multidisciplinary MEP team across London and Bristol, with on-site support for defence projects. You will drive mechanical design from concept to detailed design and coordinate with architects and civil engineers.

The role requires Chartered Engineer status, on-site presence when needed, and a proactive approach to client relations, bid support, and innovation.

Qualifications

• Chartered Engineer status with IMechE, CIBSE or equivalent professional body.
• Proven experience delivering mechanical design in built environment projects.
• Experience leading mechanical teams and coordinating with other disciplines.
• Experience in work-winning and bid support.

Responsibilities

• Deliver mechanical 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 and ensure high-quality service delivery.
• Lead and contribute to business development and bid leadership.

Skills

Mechanical design

Team leadership

Stakeholder management

MEP coordination

Communication skills

Education

Chartered Engineer (CEng)

Tools

NBS Create

IES

REVIT

Job description

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Senior Mechanical Building Services Engineer

Location(s):

London, GB Bristol, GB

Contract Type: Permanent

Work Pattern: Full Time

Market: Buildings

Discipline: Building services

Job Ref: 17876

Location/s: Bristol orLondon, UK

Mott MacDonald is a global engineering, management, and development consultancy with over 20,000 employees across more than 50 countries and 140+ offices.

We work across incredible global industries, delivering exciting work that is defining our future and making an important societal impact in the communities we serve. Our people power our performance – we succeed when they do. With countless opportunities to collaborate, learn, and grow, the possibilities for excellence are as varied as every individual.

Whether you want to grow as a subject matter expert or broaden your experience with roles across our international community, you’re surrounded by global specialists who want to combine their expertise and champion you to be your best. As a proudly employee‑owned business, we benefit our clients, our communities, and each other, investing in creating the right space for everyone to feel empowered, included, and valued. Whatever your ambition, Mott MacDonald is where people come to be brilliant.

About thebusinessunit

The Buildings Unit (BLD) 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 the role

We are seeking a Senior Building Services Mechanical Engineer to lead, grow and inspire our multidisciplinary Mechanical, Electrical and Public Health (MEP) team.

The role initially will be supporting a large defence project in the Southwest of England requiring one week per month on site.

This role is ideally based in our Bristol office, with collaboration across our regional teams in London, Brighton and Croydon, alongside opportunities to contribute to national and international projects

This role is ideally based in our Bristol office, with collaboration across our regional teams in London, Brighton and Croydon, alongside opportunities to contribute to national and international projects

• Defence and civic infrastructure
• Airports
• Railway stations

Mott MacDonald has a strong track record in delivering large‑scale infrastructure projects, and you will contribute to this legacy by leading high‑profile, complex schemes and driving technical excellence.

Key responsibilities and duties include:

• Deliver mechanical 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 to senior managers running the commercial and contractual side of projects
• Working autonomously within a team carrying out building services projects
• Chartered Engineer (CEng) status with IMechE, CIBSE, or equivalent professional body
• Security Clerance to work on defence projects already or no objection to obtaining such through MM
• 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 mechanical teams and coordinate with other disciplines
• Leader of Mechanical elements of one large project or a portfolio of smaller projects
• Delivery of coordinated MEP 3D design models
• Have a track record in building services Mechanical engineering design and specification using relevant industry software (NBS Create, IES, 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
• 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)
• Expecting to drive profitability of projects, monitoring against budget, reacting and anticipating potential problems andcommunicating in line with client expectations

Additional:

• 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 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.

Whilst security clearance is not expected for application, candidates may be requested to undertake such for UK defence projects.

UK Immigration

Mott MacDonald Ltd. are not currently offering sponsorship to candidates under the Skilled Worker visa route in the UK. This decision is as a consequence of the changes made to the Skilled Worker route by the UK Government in April 2024. We continue to welcome applications from candidates who are eligible for alternative immigration routes in the UK, that do not require sponsorship as a Skilled Worker now or in future.

At Mott MacDonald, we believe it makes business sense for you and your manager to choose how you can work most effectively to meet your client, team, and personal commitments. We offer a hybrid working policy that embraces your well‑being and flexibility and trust.

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.

AI Usage

At Mott MacDonald, we see the value AI can bring, but we take a people-first approach to hiring. While AI tools can help candidates prepare and build confidence, every application and hiring decision is reviewed by our recruitment and hiring teams. We encourage the responsible use of AI while ensuring we get to know the real person behind the application.

Accessibility

We want you to feel supported and able to perform at your best throughout our recruitment process. If there is anything we can do to make applying or interviewing with us more accessible, please contact us at [e-mail] and we'll be happy to discuss how we can help.

We offer some fantastic benefits including:

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.

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 our 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 our 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 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.

Lifestyle

• 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.
• 10 days additional paid leave for Armed Forces Reservists and Cadet Force Adult Volunteers.
• 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.
• We offer policies and dedicated support to help military families balance service life with career and wellbeing.

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.
• We are proud signatories of the Armed Forces Covenant and Gold Award holders in the MOD Employer Recognition Scheme, supported by our dedicated internal Armed Forces Network.

  If you're a service leaver, veteran, reservist or member of a military family, you can connect with our people through Armed Forces Careers - Connectr to ask questions, gain career insights and learn more about opportunities at Mott MacDonald.