Principal Mechanical Engineer (Public Health)

We are seeking an enthusiastic and motivated individual to support the growth and development of our Tunnel Systems MEP team. As Principal Mechanical Engineer (Public Health), you will oversee technical quality, ensure engineering outputs meet project requirements, and lead public health design across the full project lifecycle. This includes detailed calculations, equipment selection, and ensuring compliance with relevant standards. You will also lead the design of tunnel drainage, pumped drainage, fire mains, and fixed firefighting systems.

Key Responsibilities

• Leading teams of engineers and technicians
• Managing and coordinating multi-disciplinary project teams
• Producing reliable design solutions, reports, specifications, and drawings
• Presenting technical solutions to clients and external stakeholders
• Actively participating in design team meetings and ensuring adherence to agreed principles
• Coordinating with other engineering disciplines to integrate mechanical/public health systems within the overall design
• Contributing to bid management and business development activities
• Supporting the mentoring, management, and technical development of engineers

Qualifications

• Degree-qualified with membership of a relevant professional body (e.g., IMechE, CIBSE)
• Chartered Engineer (or equivalent relevant experience)

Essential

You will have experience in a similar engineering and construction environment, including major project delivery. You should be able to demonstrate capability in the design and specification of:

• Foul water ejector systems
• Surface water pumped systems
• Above-ground soil and waste systems
• Hot and cold-water systems
• Gas detection systems
• Compressed air systems
• Fire hydrant/suppression systems
• Sprinkler/hose reel systems

Desirable

• Experience delivering large engineering and construction projects, including transport infrastructure
• Understanding of multidisciplinary design and build processes
• Knowledge of CDM Regulations 2015
• Strong verbal, written, analytical, and organisational skills
• Ability to work to tight deadlines and use initiative
• Proactive, adaptable, and able to apply skills to new challenges
• Ability to build strong relationships in a multi-disciplinary environment
• Familiarity with common data environments
• Experience using Bluebeam, Hevacomp, MicroDrainage, Revit, ProjectWise, and MS Office
• Experience developing engineering designs within a BIM environment

Benefits

• Financial wellbeing – employee pension contributions between 4.5% and 7%, life assurance up to 4× basic salary, income protection scheme, flexible benefits such as life assurance cover, critical illness insurance, payroll saving.
• Employee ownership model providing shared success and opportunities for senior roles to gain ownership.
• Health and wellbeing – private medical insurance, health cash plan, Peppy support, comprehensive wellbeing program.
• Lifestyle – 33-35 days holiday, option to buy/sell leave, employee saving schemes and discounts.
• Enhanced family and carers leave – paid maternity and adoption leave, paternity/partner leave, additional leave for caring responsibilities.
• Learning and development – professional institution subscription, mentoring, formal training, self-development.
• Networks, communities, and social outcomes – employee networks supporting diversity and social impact.

Employment Details

• Contract Type: Permanent
• Work Pattern: Full Time
• Market: Transport
• Discipline: Railways
• Location: Croydon, London, Birmingham, Derby, Edinburgh, Glasgow, Leeds, Manchester, Sheffield, York

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.

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.

Agile Working

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, flexibility, and trust.

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.