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Senior Process Engineer

Job in Warrington, Cheshire, MK46, England, UK
Listing for: Assystem
Full Time position
Listed on 2026-02-16
Job specializations:
  • Engineering
    Electrical Engineering, Mechanical Engineer, Energy Engineer, Environmental Engineer
Salary/Wage Range or Industry Benchmark: 100000 - 125000 GBP Yearly GBP 100000.00 125000.00 YEAR
Job Description & How to Apply Below

Overview

Assystem is an international company with one mission: accelerate the energy transition around the world. Every day, our 8,000 engineers and specialists across 12 countries work to switch to low‑carbon energy. We are a collective committed to the actors who are making the energy switch, sharing knowledge, expertise and values to innovate and think differently about the energy transition. Drawing on more than 55 years of experience in highly regulated sectors, we provide engineering and project management services, as well as digital services to optimize the performance of complex infrastructure projects throughout their life cycle.

The Group is currently ranked second in the world for nuclear engineering. To ensure a viable, efficient, and reliable energy future for all.

Job Description

As a Senior Process Engineer
, you ll join Assystem’s renowned Nuclear Decommissioning Business Unit. You’ll work on a variety of tasks, from asset care replacement to the design of new facilities. This critical work will help maintain vital sample analysis capabilities across nuclear sites.

Responsibilities
  • Leverage a wide range of skills: from technical process engineering deliverables to effective communication and strong reasoning abilities.
  • Collaborate with a multi-disciplinary team: effective interaction with different specialists is key.
  • Experience in nuclear environments: knowledge of nuclear laboratories and process services is a plus.
  • Site access: you ll need to access active areas for inspection, observation, and record maintenance.
Qualifications
  • Chemical Engineering Degree
  • Chartered Engineer (or working towards)
  • Knowledge of design including DSEAR, steam/gas delivery systems, PFDs, Basis of Design, and more.
Additional Information

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.

Equal Opportunity

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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Position Requirements
10+ Years work experience
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