Senior Principal Consultant - Environmental Permitting​/Waste​/Decomm; Nuclear

Overview

We are looking for a Principal or Senior Principal Consultant in Environmental and Radioactive Waste Management to join our growing team. This role offers opportunities to be based in Warrington, Manchester, Glasgow, Bristol, Northampton, or Cambridge, working with clients including Gigawatt-scale and SMR developers, nuclear site licensees, waste management organisations, regulators, and the defence sector. It covers the nuclear lifecycle from new build and operational facilities through to decommissioning and the safe management of radioactive waste.

As a Principal or Senior Principal Consultant, you will provide senior leadership within our Nuclear team, delivering specialist environmental and radioactive waste consultancy services to clients across the UK and internationally. You will lead technically complex projects, develop waste strategies, environmental safety cases, permitting strategies, and regulatory compliance programmes for nuclear new build and decommissioning programmes. You will help clients navigate environmental and radioactive waste management challenges while ensuring regulatory compliance.

You will drive business growth through identifying opportunities, developing client relationships, leading bids, and preparing technical proposals. You will mentor colleagues, build team capability, and support the growth of a high-performing consultancy team. You will contribute to continuous improvement initiatives, shaping internal processes, standards, and procedures to sustain project excellence.

Directly influence the safe, sustainable management of radioactive materials and environmental challenges across key UK nuclear programmes. Provide technical leadership to help clients balance operational, environmental, regulatory, and commercial considerations. Develop waste management strategies, environmental submissions, safety cases, and regulatory engagement plans to navigate complex challenges across the nuclear lifecycle. Contribute to the safe decommissioning of legacy facilities, development of next-generation nuclear technologies, and responsible waste management.

Support business development, client engagement, mentoring, and capability building to strengthen market position and grow the next generation of nuclear consultants. Contribute to the advancement of safe, sustainable nuclear infrastructure and the UK's long-term energy and environmental objectives.

• Significant experience supporting environmental, radioactive waste management, or decommissioning activities within the nuclear sector
• A relevant science, engineering, or environmental degree, with postgraduate qualifications desirable
• Direct experience providing environmental and waste consultancy services to nuclear licensed sites
• Strong understanding of environmental permitting, radioactive waste management, environmental safety cases, and regulatory compliance requirements
• Experience engaging with regulators, stakeholders, and clients across complex projects
• Proven business development experience, including opportunity identification, bid leadership, tender preparation, and client management
• Strong project management skills, including project planning, cost control, governance, and delivery assurance
• Experience leading, mentoring, and developing high-performing teams
• Excellent technical report writing and communication skills
• Commercial awareness and an understanding of risk management within consultancy environments
• Eligibility to obtain UK Security Clearance (BPSS minimum)

• Specialist expertise in environmental permitting, BAT/BPM assessments, site end-state planning, or radioactive waste strategy development
• Familiarity with Earned Value Management methodologies
• Experience working on large-scale, multi-disciplinary, multi-year infrastructure programmes

• We are driven to achieve:
  Named in the top 50 companies to work by Glassdoor 2025. Recognised by Corporate Knights as one of the world s top 10 most sustainable companies 2025. Named  Best Place to Work  and  International Consulting Firm of the Year  at…