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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