Senior Nuclear Thermal Hydraulics Consultant

Senior Nuclear Thermal Hydraulics Consultant

Salary range: £71,000–£82,000 per annum.

Location:

Manchester or Bristol. Working pattern: flexible hybrid model, time split between office, client sites, and home.

This role is pivotal in shaping safety decisions for next‑generation nuclear systems. The successful candidate will contribute to the development, validation and application of advanced thermal‑hydraulic models, support safety cases and aid regulatory and design decisions across the UK nuclear portfolio.

• Develop and maintain thermal‑hydraulic models of nuclear plant systems using industry‑standard codes.
• Analyse fault sequences, transients and system behaviours to inform design decisions and nuclear safety cases.
• Provide authoritative interpretation of model results and underlying physical phenomena.
• Support model verification, validation and best‑practice application.
• Communicate complex technical outputs clearly and concisely to clients, regulators and internal stakeholders.

• Strong understanding of fluid flow, heat transfer, thermal hydraulics and multiphase flows.
• A degree in Engineering, Physics, Applied Mathematics or a related discipline, or equivalent relevant experience.
• Demonstrable experience in nuclear thermal hydraulics supporting plant design and/or operations (codes such as RELAP, GOTHIC, CATHARE, TRACE, VIPRE, S5K).
• Experience of transient and fault analysis within nuclear safety contexts.
• Ability to interpret, validate and clearly explain complex modelling outputs.

• Ability to independently manage and deliver work to meet client requirements.
• Experience contributing to proposal writing, client liaison and business development.
• Strong communication skills, with the ability to engage effectively through meetings, presentations, written reports, commercial bids and technical discussions.

Due to the nature of the work, candidates must undergo pre‑employment screening and satisfy clearance criteria for UK National Security Vetting.

• Competitive salary with annual reviews.
• 25 days’ holiday, with the option to buy up to five additional days.
• Flexible and hybrid working arrangements.
• Enhanced parental benefits.
• Company pension scheme.
• Targeted professional development and career support.
• Life assurance and private healthcare membership.
• Bonus scheme linked to company performance.
• Paid membership fees and support towards professional accreditation.
• Cycle to Work scheme and season ticket loan.
• A range of flexible benefits, tailored to your personal requirements.