Senior Radioactive Waste Consultant in London

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.

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

We are seeking a Radioactive Waste Consultant to join our growing team within the Energy Unit's Nuclear; Defence and Civil division. You’ll be part of a multidisciplinary team of radiological experts, with opportunities for career growth, chartership, professional accreditation, and the chance to apply your skills to new challenges in a supportive environment. This role offers flexible working arrangements, with hybrid working from our modern, well‑equipped offices. Occasional travel, including international visits, may be required. This role offers an exciting opportunity to make a real impact in a critical sector, leveraging your expertise to contribute to meaningful projects across new build, SMRs, decommissioning, defence and regulation across the nuclear industry.

If you’re motivated by work that combines technical excellence with meaningful purpose, we’d be excited to hear from you.

• Advise on requirements for: radioactive waste characterisation, management, treatment, storage and packaging
• Advise on the radiological impacts of liquid and gaseous discharges
• Produce technical reports, such as Waste Strategies, BAT studies, sampling plans, and regulatory compliance
• Work closely with teams across the organisation to help deliver safe, reliable solutions for our nuclear clients
• Support winning work
• Mentor colleagues
• Contribute to project delivery
• Travel for site visits, meetings, and international engagements as required

Candidate specification

Essential

• A STEM degree or equivalent industrial experience
• Competent in tools such as Microsoft office, Teams and SharePoint
• Knowledge of radioactive waste regulations, policies, and best practices in the UK or internationally
• Familiarity with waste disposal, storage, and treatment facilities and their requirements
• Understanding of the radioactive waste lifecycle, including decommissioning and remediation
• Familiarity with Best Available Techniques (radiological or conventional)
• Experience of modelling software, handling large data sets or data analysis

Desirable

• Authoring and application of Best Available Techniques (radiological)
• Methodology for assessing BAT for conventional (non radiological) design aspects
• Demonstrable experience or training in: PC Cream, IRAT2, ADMS (or other relevant radiological impact assessment software)
• Radioactive Waste Management Cases for higher activity radioactive waste, documenting conditioning, storage and long term strategy for environmental performance
• Radiation protection and ionising radiation regulations
• Supporting safety case development
• Radiation emergency preparedness arrangements
• Conventional or hazardous waste management
• Article 37 transboundary assessments
• Sustainability ILW disposability assessments
• Environmental safety case
• Generic Design Assessment
• RPA/RWA qualifications or chartered status (or working towards these)
• Strong communication skills and experience with stakeholders or regulators

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

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.

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 and we will talk to you about how we can support you.

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 everyday 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. Make a difference within our communities through our social outcomes.

Apply now, or for more information about our application process, click here.