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Salary
≈ $36k – $85k per year (Estimated)
Location
Hybrid (Warrington, United Kingdom)
Seniority
Senior
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 4, 2026. First seen by Alion on Oct 2, 2026. Assystem scores B on the Alion truth index.

Overview
Company
Impact
Profile match
Assystem is a French engineering group founded in 1966 that concentrates on complex infrastructure projects, with nuclear energy as its largest and most distinctive market. It provides design engineering, project management, safety analysis, commissioning support and operational assistance across nuclear new build, plant life extension and decommissioning, and also works on transport, energy transmission and life sciences facilities. Headquartered near Paris and listed on Euronext, it holds a significant stake in Framatome and employs thousands of engineers across France, the United Kingdom, the Middle East and Asia.

Today, Assystem is among the top three independent nuclear engineering firms worldwide. With over 60 years of experience in highly regulated sectors, the group supports public and industrial stakeholders in the execution of complex and strategic infrastructure projects, subject to high safety and security requirements.

Assystem mobilizes 8,000 experts in 13 countries and intervenes across the entire project lifecycle, in engineering, project management and digital solutions.

The successful candidate will:

Provide Assystem and our customers with authoritative waste management and characterisation advice.

Prepare and review waste and characterisation documentation in support of decommissioning projects that will include (but not be limited to): Characterisation Status Reports, Facility & Waste Characterisation Plans, Facility & Project Waste Management Plans, Waste Inventory Management, Technical Reports and Presentations.

Possess a very good working knowledge of the UK regulatory framework for waste and characterisation in the nuclear industry.

Possess a very good working knowledge of the radioactive waste and characterisation supply chain, such as available waste routes and testing facilities, waste acceptance criteria and the NWS waste management framework.

Provide key waste and characterisation input to bids.

Be able to articulate durations and costs for planned work.

Be a company champion for waste-informed decommissioning and sustainable waste management.

Lead Best Available Technique and Optioneering studies.

Be a primary contact between Assystem and our customers. This could be in the form of the candidate being seconded into our customers' organisation or working directly on a customer’s site.

Provide training and coaching to staff and contractors.

Ensure that through the implementation of BAT and effective management of resources, value to the business is ensured.

Possess a good working knowledge of the Data Quality Objective (DQO) method of characterisation.

Lead small teams where required.

Degree in a scientific or engineering-based subject or experience working in waste or characterisation engineering.

Certificate of competence to act as a Radioactive Waste Adviser (RWA).

Transport of Class 7 by Road Level 2 or Level 3.

Chartered status.

In-depth knowledge of disposal and treatment routes for wastes in the UK and overseas.

Thorough understanding of legislation and frameworks that impact waste management in the UK.

Understanding of characterisation methodology for radioactive and non-radioactive wastes (including the Data Quality Objectives and Data Quality Assessment processes).

Ability to lead small teams and be a mentor to junior members of the team.

Transport of Class 7 materials and wastes by road.

Due to the nature of work to be undertaken applicants will be required to meet certain residency criteria in order to attain a minimum level of UK security clearance if not already security cleared to a minimum SC level.

NOTICE TO CANDIDATES ON RECRUITMENT FRAUD - We are committed to safeguarding candidates from fraudulent activity associated with our recruitment process. Please note that we will never offer specialist CV writing services, request payment or ask for sensitive personal information during the recruitment process.

We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.

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