Graduate Thermohydraulic Engineer

Job Opening Title

Graduate Thermohydraulic Engineer

Role Summary

Graduate role within the Safety Engineering team focusing on fluid systems, thermal-hydraulics, CFD, and reactor safety analysis. Aimed at developing expertise across CFD tools, system-level modelling, and safety assessment for current and future nuclear technologies.

Responsibilities

• Build and run CFD models for fluid flow and heat transfer in nuclear systems
• Create meshes, set up simulations, and analyse results
• Perform parametric and sensitivity studies
• Support model validation and method development
• Develop system-level models using tools like CATHARE or RELAP
• Simulate reactor transients and analyse system behaviour
• Assess safety margins and key assumptions
• Contribute to technical reports and safety documentation
• Support validation and quality processes
• Collaborate with project teams and share knowledge
• Prepare CFD simulation models, results, and validation studies
• Prepare thermohydraulic calculation files and transient analysis outputs
• Prepare technical and safety analysis reports
• Prepare sections of reactor safety cases and modelling guidelines
• Prepare technical presentations (internal and external)

Profile

Essential Qualifications, Experience and Skills:

• MSc or PhD in nuclear, fluid mechanics, thermal, or energy engineering
• Strong foundation in fluid dynamics and heat transfer
• Exposure to CFD tools (e.g., ANSYS Fluent, CFX, OpenFOAM, STAR-CCM+)
• Understanding of turbulence modelling, multiphase flow, and numerical methods
• Basic knowledge of system codes (CATHARE, RELAP, TRACE, MANTA)

Languages (level):

• French – bonus

What’s in it for you?

• 25 days annual leave per year rising by 1 day for every 2 years worked (max 30 days) + Bank Holidays
• 8% employer pension contribution with employee 1% contribution (salary sacrifice)
• Individual and family private health care
• Dental insurance for employees
• Life assurance (4x salary)
• Employee assistance programme (EAP)
• Income Protection
• Professional Body Membership
• Tusker Electric car scheme (salary sacrifice)
• Cycle to Work scheme (salary sacrifice)
• Babbel – learn a new language
• Generous family leave

Job location

United Kingdom, Bristol

Travel

No

Job family

Standard

Minimum level of education required

Ph.D

Minimum level of experience required

New graduate

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