Derby, England, United Kingdom · Hybrid
$51k–$67k/yr
Role Title: Senior Engineer - Thermofluids Model Validation We are Rolls-Royce SMR and we’re doing something that’s never been done before. We’re revolutionising an industry. That’s a once-in-a-career opportunity for tho…
Skills: Fluid Dynamics, Thermal Processes, RELAP, Flomaster, Vipre
Derby, England, United Kingdom · Hybrid
$51k–$67k/yr
Role Title: Senior Engineer - Containment Analysis We are Rolls-Royce SMR and we’re doing something that’s never been done before. We’re revolutionising an industry. That’s a once‑in‑a‑career opportunity for those excite…
Skills: Thermal-hydraulic modelling, Fluid dynamics, Python, Safety case authorship, Verification and validation
Derby, England, United Kingdom · Hybrid
$51k–$67k/yr
Role Title: Senior Engineer - Thermofluids Model Validation We are Rolls-Royce SMR and we’re doing something that’s never been done before. We’re revolutionising an industry. That’s a once-in-a-career opportunity for tho…
Skills: Fluid Dynamics, Thermal Processes, RELAP, Flomaster, Vipre
Derby, England, United Kingdom · Hybrid
$51k–$67k/yr
Role Title: Senior Engineer - Containment Analysis We are Rolls-Royce SMR and we’re doing something that’s never been done before. We’re revolutionising an industry. That’s a once‑in‑a‑career opportunity for those excite…
Skills: Thermal-hydraulic modelling, Fluid dynamics, Python, Safety case authorship, Verification and validation
Derby, England, United Kingdom · Hybrid
$51k–$67k/yr
Role Title: Senior Engineer - Thermofluids Model Validation We are Rolls-Royce SMR and we’re doing something that’s never been done before. We’re revolutionising an industry. That’s a once-in-a-career opportunity for tho…
Skills: Fluid Dynamics, Thermal Processes, RELAP, Flomaster, Vipre
Derby, England, United Kingdom · Hybrid
$60k–$79k/yr
Role: Lead Engineer – Geotechnical Locations: Hybrid working with your primary office location being which ever is closest to you: Derby, Warrington or Manchester Our mission Our mission is to deliver clean, affordable e…
Skills: Geotechnical Design, Technical Leadership, Foundation Design, Earthworks, Tunnelling
Warrington, England, United Kingdom · Hybrid
Company Description BIM Manager - Energy "Lead the Digital Revolution in Energy: Innovate, Transform, and Shape the Future of Energy with AECOM!"" Work with Us. Change the World. At AECOM, we’re delivering a better world…
Skills: BIM Management, ISO 19650, CDE Management, Autodesk Revit, Autodesk Civil 3D
Warrington, England, United Kingdom · Hybrid
Company Description 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 stakehold…
Skills: Plant Layout, Piping Layout, Plant Integration, Multidisciplinary Coordination, E3D
Warrington, England, United Kingdom · On-site
Company Description Egis is a leading global architectural, consulting, construction engineering, operations and mobility services firm. We create and operate intelligent infrastructure and buildings that both respond to…
Skills: Project Management, NEC3/4 Contract Administration, Stakeholder Management, Risk Mitigation, Budget Control
Warrington, England, United Kingdom · Hybrid
We are looking for an experienced Power Systems Design Engineer to join our team. This role will focus on designing systems ranging from commercial-scale projects (200 kW) up to large utility-scale solar farms (60 MW). Y…
Skills: Electrical Design, HV and LV Systems, Solar PV, Grid Connection Management, G99 and G100 Compliance
Derby, England, United Kingdom · Hybrid
$60k–$79k/yr
Location: Flexible (UK-based, hybrid working with travel to Warrington, Derby and Manchester as required) Our Mission At Rolls-Royce SMR, we are delivering one of the UK’s most ambitious clean energy programmes. Our Smal…
Skills: Systems Engineering, Containment Systems Design, Severe Accident Management, Requirements Management, Design Substantiation
Warrington, England, United Kingdom · On-site
United Infrastructure is a dynamic and rapidly expanding business, focused on delivering critical infrastructure projects, across the utility and social infrastructure sectors. Our team of highly skilled and hardworking …
Skills: Procurement, Negotiation, Supplier Management, Purchase Orders, Cost Analysis
Cumberland, England, United Kingdom · Hybrid
At Amentum, we're not just solving problems; we're engineering the future. Our team is driven by an unyielding commitment to innovation, integrity, and collaboration, tackling some of the most significant challenges in s…
Skills: Radioactive Waste Management, Waste Characterisation, Regulatory Compliance, Stakeholder Engagement, Waste Forecasting
Birmingham, England, United Kingdom · Remote OK
SMT is a leading full-service distribution company specializing in machinery and trucks. Our focus is on providing equipment for the construction, material handling, recycling, and transport industry. Launched in 2010, w…
Skills: Battery-Electric Technology, Hazardous-Voltage Systems, Technical Diagnostics, Technical Training Delivery, Charging Infrastructure Planning
Derby, England, United Kingdom · Hybrid
$60k–$79k/yr
Location: Flexible (UK-based, hybrid working with travel to Warrington, Derby and Manchester as required) Our Mission At Rolls-Royce SMR, we are delivering one of the UK’s most ambitious clean energy programmes. Our Smal…
Skills: Systems Engineering, Containment Systems Design, Severe Accident Management, Requirements Management, Design Substantiation
Derby, England, United Kingdom · Hybrid
$60k–$79k/yr
Location: Flexible (UK-based, hybrid working with travel to Warrington, Derby and Manchester as required) Our Mission At Rolls-Royce SMR, we are delivering one of the UK’s most ambitious clean energy programmes. Our Smal…
Skills: Systems Engineering, Containment Systems Design, Severe Accident Management, Requirements Management, Design Substantiation
Warrington, England, United Kingdom · Hybrid
At Amentum, we're not just solving problems; we're engineering the future. Our team is driven by an unyielding commitment to innovation, integrity, and collaboration, tackling some of the most significant challenges in s…
Skills: Process Design, Engineering Calculations, Simulations, Process Safety Assessments, HAZOP
Warrington, England, United Kingdom · Hybrid
Company Description 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 stakehold…
Skills: Plant Layout Engineering, Piping Design, 3D CAD/BIM, Systems Engineering, Multidisciplinary Integration
Warrington, England, United Kingdom · Hybrid
Company Description 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 stakehold…
Skills: Plant Layout Integration, Piping Layout, Building Integration, Modularisation, Multidisciplinary Coordination
Warrington, England, United Kingdom · Hybrid
At Amentum, we're not just solving problems; we're engineering the future. Our team is driven by an unyielding commitment to innovation, integrity, and collaboration, tackling some of the most significant challenges in s…
Skills: Electrical Systems Design, CE&I Engineering, FEED Pipeline, Process Instrumentation Design, LV Electrical Power Design
Derby, England, United Kingdom • Hybrid
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Technically lead a team to verify, validate, and quantify uncertainties in thermal hydraulic analysis codes for SMR power stations. Responsibilities include benchmarking analytical models against experimental data and supporting safety case development across reactor plant systems.
Requires a degree in Engineering, Physics, Mathematics, or Computer Science with strong expertise in fluid dynamics and thermal hydraulics tools. Candidates should have experience in structured analysis, Python-based solutions on Linux HPC, and a background in safety-critical plant systems.
We are Rolls-Royce SMR and we’re doing something that’s never been done before. We’re revolutionising an industry. That’s a once-in-a-career opportunity for those excited by such a challenge. This is more than just a job; this is a legacy.
We are now recruiting for a Senior Engineer - Thermofluids Model Validation to join our Performance & Analysis team, the centre of excellence for engineering analysis used to substantiate the performance and safety of the SMR power station.
Thermal hydraulic analysis codes are critical to modelling fluid and thermal systems that extract power from the nuclear core and ensure safe reactor operation. These codes underpin the design and safety case of the power station, so building confidence in their predictions is essential.
You will technically lead a small team, working closely with method development and analysis teams to verify, validate, and quantify uncertainties in these codes. You’ll support activities across reactor plant transient and fault analysis, core sub-channel analysis, and containment analysis.
Key areas of responsibility include:
This role requires strong leadership, technical expertise, and effective collaboration across multiple engineering disciplines.
Hybrid working with one of the following locations as your primary site: Derby, Manchester or Warrington
The salary band for this will be between £50,650–£66,500 dependent on the skills, values, and knowledge you bring. There may be some flexibility with the starting salary in exceptional cases, and, in due course, there is the potential for you to develop the role further.
Benefits include:
You’ll be joining a forward-thinking organisation that values transparency, fairness, and innovation. We offer a flexible, inclusive, and supportive working environment, opportunities for career growth in a rapidly scaling business, and a culture that values diversity, innovation, and continuous learning.
The closing date for this role is 12th July 2026.
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£66,465.00
You’ll be joining a forward-thinking organisation that values transparency, fairness, and innovation. We offer:
• A flexible, inclusive, and supportive working environment.
• Opportunities for career growth in a rapidly scaling business.
• A culture that values diversity, innovation, and continuous learning.
We are an equal opportunities employer and welcome applications from all backgrounds. Inclusivity is important to us, and as a Disability Confident organisation, we are committed to fair, supportive, and continually improving recruitment practices that ensure everyone has the opportunity to thrive.
Confidence can sometimes hold us back from applying for a job. But we'll let you in on a secret: there's no such thing as a 'perfect' candidate. If you feel you meet 75% of the requirements for this role, we would love to hear from you.
Also, if you are considering a career move or a sector-jump, please get in touch – we welcome applications from people with transferable skills.
Due to the safety regulations within the nuclear industry, applicants will be required to participate in additional screening. These are:
• Obtaining Baseline Personnel Security Standard (BPSS) clearance
• Satisfactory completion of a Disclosure and Barring Service (DBS) check
• Satisfactory completion of a basic financial probity check
#LI-CE1 #LI-Hybrid #WeareSMR #destinationnuclear
Providing clean, affordable energy for all.
Climate change and its consequences are one of the greatest challenges ever to face mankind. The global challenge around decarbonisation is huge. At Rolls-Royce SMR, our vision is simple – we want to provide clean, affordable energy for all. A new approach to delivering nuclear power Our Small Modular Reactor is an integrated power station, that takes well understood, existing nuclear technology and applies a factory-based philosophy to its fabrication and assembly. This repeatable, standardised approach generates huge efficiency gains to make it a commoditised product that is affordable, repeatable, deliverable and investable on a global scale, providing cheaper and more flexible electricity to form part of a future balanced, clean energy mix. When fully operational the Rolls-Royce SMR programme will create 40,000 regional UK jobs by 2050 and generate £54bn in economic benefit, with a forecast to target £250bn in global exports for the UK. Join us and help to provide clean, affordable energy for all
Offices: Derby, GB
There are currently 168 open energy positions in Warrington, United Kingdom listed on Clera. New openings are added daily as companies post roles.
Companies currently hiring include Rolls-Royce SMR, Assystem, Amentum, PiLON Ltd, AECOM, among others. Browse the listings above to see every active employer.
Yes — 140 of the 168 open energy positions offer remote or hybrid work (1 remote, 139 hybrid).
Each listing links directly to the employer's application page. Apply early — fresh listings get the most recruiter attention in the first two weeks.
