Job Title: Principal Radiation Physicist Location: Barrow-in-Furness - Hybrid 3 days minimum onsite. 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. What you''ll be doing: You will supervise and conduct assessment and experiments to support system qualification, while contributing to ongoing design optimisation. Your role includes producing and reviewing radiological safety justifications for proposed design solutions and directing the development of in house toolsets to meet departmental goals. You will also support detailed shielding design, balancing build constraints with system performance requirements. Core duties: You hold a relevant STEM degree in Physics, Mathematics, Chemistry, or Nuclear Engineering You have demonstrable experience using radiation transport codes such as MCNP, MCBEND, or Attilla You understand radiation physics and its pr