Principal Radiation Physicist

Job Title

Principal Radiation Physicist

Location

Barrow-in-Furness. The role will require a minimum of 3 days site attendance weekly

We offer a range of hybrid and flexible working arrangements – please
speak
to your recruiter about the options for this particular role

Salary

Competitive

Who we are

Join BAE Systems and you’ll be part of something bigger. As a valued member of our global colleague network, you’ll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You’ll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow, shaping a safer future, for all of us.

From the depths of the ocean, to the far reaches of space, there’s no limit to where a career at BAE Systems could take you.

Job Description

As a Principal Radiation Physicist, you will be focused on leading radiation physics and shielding work across major defence programmes, supporting the UK’s nuclear submarine contribution. The position involves supervising and delivering assessments and experiments that underpin system qualification, while contributing to design optimisation and performance improvements.

What you’ll be doing

You will be responsible for supervising and conducting assessments and experiments to support with system qualification

You will play a key part in contributing to ongoing design optimisation

You will be producing and reviewing radiological safety justifications for proposed design solutions

You will be responsible for directing the development of in-house toolsets to meet departmental goals

You will support with detailed shielding designs whilst balancing build constraints with system performance requirements

Core duties

You are required to hold a relevant STEM degree in Physics, Mathematics, Chemistry, or Nuclear Engineering

You will need to have gained demonstrable experience of using radiation transport codes such as MCNP, MCBEND, or Attilla

You will need a good understanding of radiation physics and its practical application

You require experience within radiation safety studies and behaviours

You will need to have gained experience in radiation metrology and possess knowledge of the ALARP
principle

The Radiation Physics and Shielding Team

Our team designs and validates radiation shielding for the UK’s nuclear submarine fleet across three major programmes. We handle shield design, build assessments, metrology, and safety studies, while developing novel detectors and electronics capability. We offer relocation support packages across all Submarines roles, subject to meeting eligibility criteria.

Why BAE Systems?

Here you’ll build a career with purpose and limitless possibilities. With lifelong learning and meaningful work, this is a place where you can grow your career with
confidence
and be empowered to be your best. You’ll be recognised for your contribution and enjoy rewards tailored to what’s most important to you and your family, support for your financial and personal wellbeing, as well as a balanced lifestyle. In an environment embracing sustainable ways of working and with a
strong
sense of shared purpose, our supportive culture is a place you can feel you belong and proud of the difference you make.

A place where everyone can thrive

We’re committed to building an inclusive workplace where everyone feels valued and supported. We know that a diversity of backgrounds, perspectives and experiences strengthens our teams and is vital to the work we do.

Please be aware that many roles at BAE Systems are subject to both security and export
control
restrictions. These restrictions mean that factors such as your nationality, any nationalities you may have previously held, and your place of birth can restrict
the roles
you are eligible to perform within the organisation. All
applicants
must
as a minimum achieve Baseline Personnel Security Standard. Many roles also require higher levels of National Security Vetting where
applicants
must
typically have 5 to 10 years of continuous residency in the UK depending on the vetting level required for
the role , to allow for meaningful security vetting checks.

Closing Date

24th August 2026

We reserve the right to close this vacancy early if we receive sufficient applications for
the role . Therefore, if you are interested, please submit your application as early as possible.

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