Senior Nuclear Physics Consultant

Frazer-Nash Consultancy

Leatherhead

Hybrid

GBP 70,000 - 85,000

Full time

2 days ago

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Benefits offered by this job

Competitive salary

Annual reviews

25 days holiday

Pension scheme

Private healthcare

Bonus scheme

Professional development

Life assurance

Job summary

Frazer‑Nash Consultancy is seeking a Senior Nuclear Physics Consultant in the UK. The role focuses on advanced analytical techniques, modelling of nuclear systems and delivering high-quality consultancy to clients.

You will manage technical work, mentor colleagues, engage directly with clients, and help grow capability in your niche, with hybrid working between offices, client sites, and home. A strong physics/engineering background is essential.

Qualifications

Strong understanding of nuclear physics with reactor physics, neutron kinetics, or shielding expertise.
Degree in Engineering, Physics, Applied Mathematics, or related discipline, or equivalent experience.
Experience in reactor core design/operations using lattice physics, neutron kinetics, or neutron transport codes.
Experience of transient and fault analysis within nuclear safety contexts.
Ability to interpret and clearly explain complex modelling outputs.
Experience in leading proposal writing, client engagement and business development.

Responsibilities

Developing and maintaining models of nuclear plant cores and systems using industry-standard codes.
Analysing fault sequences, transients, and system behaviours to inform design decisions and nuclear safety cases.
Providing authoritative interpretation of model results and underlying physical phenomena.
Supporting model verification, validation, and best-practice application.
Leading a specialist capability area within the company.
Communicating complex technical outputs clearly and concisely to clients, regulators, and internal stakeholders.

Skills

Nuclear physics expertise

Reactor physics

Neutron kinetics

Modelling techniques

Proposal writing

Client engagement

Education

Engineering/Physics/Applied Mathematics degree

Tools

Industry-standard codes

Job description

Role

Senior Nuclear Physics Consultant

Salary range

£70,000 to £85,000 per annum depending on experience

Location

Bristol, Gloucester, Plymouth or Leatherhead

Working Pattern

We operate a flexible hybrid working pattern at Frazer‑Nash, with time split between the office, client sites and working from home.

Closing date

25th October

The Nuclear Renaissance is Here

From gigawatt‑scale reactors to next‑generation systems, the UK’s nuclear future depends on engineers who thrive on solving complex physical problems and delivering deep technical insight backed by robust analysis.

We are seeking an experienced Senior Nuclear Physics Consultant to help shape critical decisions, support safety cases, and strengthen the next generation of nuclear capability.

Your Work Will Help To

Tackle safety‑critical engineering challenges
Support confident regulatory and design decisions
Strengthen the UK’s civil nuclear capability
Deliver high‑quality, trusted consultancy advice to our clients

About Frazer‑Nash In Nuclear

Frazer‑Nash has over three decades of experience supporting the UK nuclear sector. Our multidisciplinary teams work across civil nuclear operations, new‑build programmes and decommissioning, helping our clients meet exacting technical and regulatory requirements.

Our physicists work closely with safety and systems teams, providing insight into complex plant behaviour and supporting clients through design, justification, and regulatory engagement. We empower our consultants to take ownership of their work, build deep technical expertise, and have visible impact.

Why Join Frazer‑Nash?

Work on nationally significant nuclear programmes with real societal impact
Take ownership of technically challenging work and client delivery
Develop your career in a supportive, technically ambitious consultancy
Be part of a collaborative team shaping the future of nuclear engineering in the UK

Why this Role?

As a Senior Nuclear Physics Consultant, you will apply advanced analytical techniques and modelling tools to understand and explain complex physical behaviour in nuclear systems. You will contribute across the full consultancy lifecycle, from technical analysis and interpretation through to client engagement and business development.

Taking the lead

You will manage technical work packages, mentor others, engage directly with clients, and support project delivery, while leading the capability growth in your area.

Variety of work

Our consultants typically work on multiple projects at once, ranging from short, focused studies to long‑term programme support across the nuclear lifecycle.

Growing capability

You will lead specialist capability development within your niche area, be involved in client discussions, campaigning and winning work.

Key Responsibilities Include

Developing and maintaining models of nuclear plant cores and systems using industry‑standard codes.
Analysing fault sequences, transients, and system behaviours to inform design decisions and nuclear safety cases.
Providing authoritative interpretation of model results and underlying physical phenomena.
Supporting model verification, validation, and best‑practice application.
Leading a specialist capability area within the company.
Communicating complex technical outputs clearly and concisely to clients, regulators, and internal stakeholders.

What We’re Looking For

Strong understanding of nuclear physics, and an area of expertise in reactor physics, neutron kinetics, criticality or shielding.
A degree in Engineering, Physics, Applied Mathematics, or a related discipline, or equivalent relevant experience.
Demonstrable experience in supporting reactor core design and/or operations, using relevant lattice physics, neutron kinetics, or neutron transport codes.
Experience of transient and fault analysis within nuclear safety contexts.
Ability to interpret, validate, and clearly explain complex modelling outputs.

Personal And Consultancy Skills

Ability to independently manage and deliver work to meet client requirements.
Experience in leading proposal writing, client engagement, 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 that Frazer‑Nash Consultancy undertakes, candidates will be required to undergo pre‑employment screening and must be able to satisfy clearance criteria for UK National Security Vetting.

Benefits