Principal Nuclear HVAC Engineer

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 Energy unit delivers services to clients globally across several sectors including hydropower, nuclear, waste, renewable generation and transmission & distribution networks. Together we provide integrated engineering and project management services across the project lifecycle – from concept and design to construction and operations, to decommissioning or repowering and life extension. Together with our clients, we’re helping to deliver the energy transition globally.

About this role:
Due to new project wins and continued growth, we’re recruiting a Principal Nuclear HVAC Engineer to join our Power, Process & Nuclear division. Our team delivers projects to a wide range of clients across the defence and nuclear new-build industry and offers the opportunity to work on some of the most exciting projects in the industry - there’s never been a better time to join us!
This role combines technical leadership with strategic project responsibilities, providing an excellent opportunity for career growth. As a key member of our team, you will have the opportunity to influence major projects while mentoring and inspiring the next generation of engineers.

Responsibilities:

• Lead HVAC aspects of multi-discipline design projects, from feasibility to detailed design stages. Oversee and approve documentation such as assessment/condition reports, survey reports, basis of designs, and procurement specifications.
• Manage and review detailed design drawings, layouts, and schematics, including heating, ventilation, LTHW, chilled water, specialist LEV, and BMS installations.
• Guide the delivery of high-quality written work, including functional specifications, basis of design, equipment specifications, and validation and verification plans.
• Lead the preparation of project estimates, including equipment and man-hour costs.
• Take responsibility for ensuring compliance with construction (design and management) regulations across multiple projects.
• Manage and mentor multidisciplinary engineering teams to support their growth and ensure project success.
• Drive project delivery, including resource planning, client engagement, and coordination of technical input.
• Provide technical leadership to support bids and estimates, including developing innovative solutions to complex challenges.
• Act as the primary point of contact for clients, ensuring excellent collaboration and delivery of client needs.
• Chair and present at internal and external stakeholder meetings, representing the business at a senior level.

Candidate Specification:

• Chartered status with the IMechE or other relevant professional body (or equivalent experience with progress toward chartered status).
• Demonstrable experience in HVAC design within a highly regulated industry, preferably nuclear
• Ideally in-depth knowledge of nuclear ventilation guidelines and standards.
• Broad knowledge of industry standards, legislation, and engineering principles.
• Strong commercial awareness, with experience in FEED (Front-End Engineering Design) projects.
• Excellent communication skills and the ability to engage effectively with clients and stakeholders.
• Capable of managing and prioritising multiple projects.
• Client-facing experience, with the ability to maintain and build strong client relationships.
• Committed to continuous professional development and staying abreast of industry advancements.

Due to the sensitivity of some of our projects, candidates will be required to apply for and obtain UK Security Clearance.

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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.

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.

Accessibility

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 reasonable.adjustments@mottmac.com 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.

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.
• 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.