Principal Process Engineer

Assystem is an international company with one mission: accelerate the energy transition around the world.



Every day, our 8,000 switchers located in 12 countries (Europe, Middle East, Pacific Asia & Africa) connect their six thousand billion neurons to tackle the task of the century: switching to low-carbon energy.



We are a collective committed to the actors who are making the energy switch. Sharing our knowledge, expertise and values allows us to innovate and think differently about the energy transition.



Drawing on more than 55 years' experience in highly regulated sectors subject to strict security and safety requirements, we provide our customers with engineering and project management services, as well as digital services and solutions 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.

Principal Process Engineer

Location: Warrington

Staff / Contract (Inside IR35)

Project Description:

The project requires the following at a high level:

• 🏗️ Mobilisation of residual solids in legacy effluent management tanks
• 💥 Retrieval of solids from tanks
• ⚛️ Separation of solids from adhering nuclear inventory
• 🔄 Routing of recovered nuclear inventory for onward processing
• 📦 Packaging and routing of residual solids for onward encapsulation (ILW and LLW)

Role Description:

• 📝 Produce process engineering deliverables to support the "Appraise and Select" design phase
• 👥 Work within a multi-discipline design team
• 🔑 Key deliverables will include:
  • 📃 Process description
  • 🔌 Process schematics
  • ⚠️ Basis of process safety
  • ➗ Underpinning calculations

Essential Experience & Qualifications:

• 🎓 Degree in Chemical Engineering – A formal educational background in Chemical Engineering is a must.
• 💪 Proactive and driven approach to work – Ability to take initiative and remain motivated.
• 🗣️ Good communication skills – Capable of collaborating with team members from different disciplines and effectively communicating ideas and solutions.
• 📝 Competent report writing skills – Ability to document findings clearly and concisely, ensuring all reports are well-structured and easy to understand.
• ⏱️ Comfortable under time and cost constraints – Able to work efficiently under deadlines and within budget limitations.

Desirable Experience & Qualifications:

• 🏅 Chartered Chemical Engineer – Chartered status with the Institution of Chemical Engineers (IChemE) or Engineering Council (EC) is a plus.
• 🔍 Experience with Sellafield Ltd procedures – Familiarity with the procedures for checking and approval within Sellafield Ltd.
• ⚛️ Experience in nuclear industry design delivery – Prior involvement with designing and delivering projects in the nuclear sector.
• ⚠️ DESEAR – Experience or knowledge of the Design Engineering Safety Assessment and Risk Management (DESEAR) process.

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.

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.