Reactor System Design Engineer - Nuclear

ALTEN Group; East Midlands; On-site; GBP 50,000 - 70,000; Full time

Job summary

A leading engineering consultancy in the UK is seeking a Reactor System Design Engineer to support the design and integration of advanced reactor systems. The role involves leading system design studies, developing fluid system concepts, and ensuring safety in reactor architectures. The ideal candidate has a degree in Chemical Engineering and experience with chemical processes. The position offers a competitive salary, medical insurance, and various other benefits.

Benefits

Private Medical & Travel Insurance

Pension Scheme

Cycle-to-work Scheme

Flexible working arrangements

Qualifications

• Degree (or higher) in Chemical Engineering, Process Engineering or related discipline.
• Proven experience in chemical process design and system integration.
• Strong understanding of fluid systems and hazard management.

Responsibilities

• Lead and support system design and optioneering studies.
• Develop optimised chemical and fluid system concepts.
• Define and manage system requirements for reactor architecture.

Skills

Chemical process design

Fluid systems

Heat exchangers

Analytical skills

Problem-solving skills

Education

Degree in Chemical Engineering

Tools

IBM DOORS

Job description

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Job Overview\

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ALTEN UK is seeking a \Reactor System Design Engineer\<\/b\> to support the \design and integration of advanced reactor systems\<\/b\> for major nuclear and clean energy programmes. You will combine your chemical engineering expertise with systems‑level thinking to develop efficient, safe, and innovative system architectures for next‑generation power stations.\<\/p\> \

Responsibilities\

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• Lead and support system design and optioneering studies, assessing and comparing design options through structured decision‑making methods (e.g. PUGH matrices).\
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• Develop optimised chemical and fluid system concepts balancing performance, safety, and maintainability.\
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• Integrate lessons learned and best practices from industry to deliver robust, innovative solutions.\
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• Define and manage system requirements to ensure alignment with overall reactor architecture and project objectives.\
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• Use and maintain requirements management tools such as IBM DOORS.\
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• Bring together multidisciplinary inputs — including mechanical, control, and safety engineering — to deliver a fully functional, safe, and efficient system design.\
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• Apply expertise in fluid flow, heat exchangers, and service condition control to optimise performance and safety.\
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• Support detailed analysis and design of fluid handling systems, ensuring correct operation under various process and environmental conditions.\
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• Execute practical design tasks, such as relocating and optimising heat exchangers and defining service integration and control measures.\
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• Understand and assess both internal and external hazards, ensuring design solutions meet safety and operational requirements.\
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• Evaluate how operating conditions affect system performance and interactions across the reactor architecture.\
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• Contribute to hazard reviews, risk assessments, and design substantiation activities.\
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Qualifications\

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• Degree (or higher) in Chemical Engineering, Process Engineering, mechanical engineering, system engineering or related discipline.\
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• Proven experience in chemical process design, system optioneering, and system integration.\
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• Strong understanding of fluid systems, heat exchangers, and hazard management.\
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• Experience in requirements management and use of IBM DOORS (desirable).\
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• Excellent analytical and problem‑solving skills, capable of applying structured engineering methods.\
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• Knowledge of system architecture, safety integration, and multi‑discipline coordination.\
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Desirable\

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• Experience within nuclear, energy, or process industry environments.\
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• Familiarity with systems engineering standards and requirements traceability.\
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• Exposure to hazard analysis, HAZOP, or risk assessment processes.\
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Why join us\

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• A personalised career path and a rewarding management style.\
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• A chance to work on the most exciting engineering projects and technologies along with Premium Customers.\
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• A huge diversity of engineering projects and industries.\
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• A competitive salary.\
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• Private Medical & Travel Insurance.\
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• Pension Scheme.\
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• Cycle‑to‑work Scheme among many additional benefits.\
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• Social atmosphere, regular gatherings, and team building.\
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• Flexible way of working (role dependent).\
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Senior Level\

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Associate\<\/p\> \

Employment Type\

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Full‑time\<\/p\> \

Job Function\

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Consulting\<\/p\> \

Industries\

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Software Development, IT Services and IT Consulting\<\/p\> \

Location\

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Derby, England, United Kingdom\<\/p\>