Senior Systems Engineer

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 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.

Overview of the role
Our Nuclear; Defence and Civil division is looking for a Senior Systems Engineer. This role involves working closely with clients, designers, other systems engineers and interface managers. You will lead stakeholder workshops, define system interfaces, and manage multiple system deadlines while producing key deliverables, including:

• User Requirements Document
• Systems Engineering Management Plan (SEMP)
• Requirements and Acceptance Management Strategy (RAMS) & Plan (RAMP)
• Concept of Operations (CONOPS)
• Integrated Test Evaluation and Acceptance Strategy (ITEAS) & Plan (ITEAP)

Our team provides a range of key services, including:

• Requirements Management
• System Architecture Development
• Interface Management and Systems Integration
• Design Assurance, Verification, and Validation
• Reliability, Availability, and Maintainability (RAM)

Responsibilities:

• Develop, propose, and validate system requirements, addressing gaps in project knowledge
• Organise and lead stakeholder workshops, defining metrics and acceptance criteria
• Work with designers and the Interface Manager to define internal and external system interfaces
• Develop and review systems engineering artefacts as necessary
• Influencing, capturing and translating stakeholder vision into system and sub-system requirements
• Use requirements management software to capture, track, and manage requirements efficiently
• Communicate complex technical content clearly to stakeholders at all levels
• Developing and using tools and techniques to conduct domain specific analysis and assessments from system to component level
• Developing Concept of Operations and system architectures (functional and physical)
• Validation of User Requirements through generating and managing Validation & Verification evidence
• Producing high quality technical reports, presentations and project artefacts as required by company processes and project delivery
• Support and mentor junior staff, overseeing task supervision and professional development

Requirements:

• Strong understanding of systems engineering tools and techniques (e.g. functional modelling, Function Means Analysis (FMA), decision analysis), concept generation, systems integration, assessment and selection
• Strong stakeholder management skills with the ability to communicate complex concepts clearly
• Strong background in requirements development and validation for infrastructure projects
• Knowledge of model-based systems engineering (MBSE) and system architecture development
• Expertise in Integrated Test Evaluation and Acceptance strategies
• Proficiency in Microsoft Word and system architecture tools (e.g., Visio, Sparx EA)
• Excellent written communication skills with a methodical, detail-focused approach
• Previous experience in infrastructure projects and ideally the nuclear sector

Please be advised that offers for this role are conditional upon obtaining the appropriate level of 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  

We are happy to talk openly about 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.