Job Title: Principal Process Engineer

Contract: 12-month contract (Inside IR35)

Location: Warrington (site-based / hybrid subject to project needs)

Security Clearance: UK Security Check (SC) - must be held or eligible

Positions Available: 3

Role Overview

We are seeking three highly experienced Principal Process Engineers to support a critical programme within the UK nuclear sector. These roles have been raised as a specific project requirement and will play a key part in the technical delivery, assurance, and development of process engineering solutions associated with RepU management and reuse.

The programme relates to the UK's historic and potential future use of reprocessed uranium, including its storage, conversion, re-enrichment, and potential reuse in fresh fuel cycles.

Key Responsibilities

Provide principal-level process engineering leadership to the project
Develop, review, and approve process flowsheets, mass and energy balances, and technical documentation
Support process design, optimisation, and safety case development for nuclear fuel cycle facilities
Interface with safety, operations, commissioning, and regulatory teams
Ensure compliance with UK nuclear regulations, safety standards, and best practice
Act as a technical authority, mentoring junior engineers where required
Support technical decision-making and risk reduction across the project lifecycle

Essential Experience & Skills

Chartered or chartership-track Process / Chemical Engineer (IChemE or equivalent)
Extensive experience in nuclear process engineering, ideally within fuel cycle, reprocessing, or waste programmes
Strong understanding of nuclear safety principles and regulated environments
Experience producing and reviewing technical substantiation and safety documentation
Ability to work effectively in multi-disciplinary project teams
SC clearance held or clear eligibility to obtain

Desirable

Direct experience with RepU, reprocessing, enrichment, conversion, or spent fuel programmes
Experience working on UK nuclear licensed sites (e.g. Sellafield or similar)
Knowledge of once-through and closed fuel cycle strategies

If you've got strong nuclear process engineering experience and active SC clearance, this is a chance to work on a technically complex, nationally significant project.

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