Fluid System Design Engineer (Section Lead) - Submarines

Rolls-Royce plc; East Midlands, Glasgow; Hybrid; GBP 50,000 - GBP 70,000; Full time

Job summary

A leading engineering firm in the UK is seeking a Fluid System Design Engineer (Section Lead) to manage operational tasks within the Dreadnought Fluid Systems team. This role involves developing safety case documentation, leading a team of engineers, and collaborating closely with the Ministry of Defence and other stakeholders. Ideal candidates will have experience in Fluid Dynamics, nuclear safety principles, and a relevant engineering degree. A commitment to inclusivity and collaboration is essential.

Benefits

Support for Security Clearance application

Working on world-class solutions

Qualifications

• Experience in requirements capture and task planning.
• Ability to engage proactively with internal and external stakeholders.
• Understanding of safety case management processes.

Responsibilities

• Lead the Operations Section within the Dreadnought Fluid Systems team.
• Develop design phases of Primary Systems Operational functions.
• Update and improve nuclear safety case documentation.

Skills

Understanding of nuclear safety case methods

Fluid Dynamics and Thermodynamics

Engagement with stakeholders

Education

Degree in a relevant engineering discipline

Job description

#### #### ####* Fluid System Design Engineer (Section Lead) - SubmarinesRolls‑Royce# Fluid System Design Engineer (Section Lead) - Submarines* Full time* Professionals* Engineering* UK, United Kingdom* Posted 1 day ago## **Job Description****Fluid System Design Engineer (Section Lead) - Submarines****Full Time****Derby or Glasgow (min 3 days on site )**The Dreadnought Fluid Systems and Operations teams are responsible for creating key safety, design, build, commissioning and operational documentation, for the next generation of the UKs Ballistic Submarines’ Nuclear Steam Raising Plant. The team work closely with the Ministry of Defence, third party partners, The Royal Navy, BAE Systems and Babcock Marine, as well as the Rolls‑Royce Devonport, Clyde and Barrow Satellite Site office teams. The role of a Fluid Systems Design Engineer (FSE) is integrating individual components into a reliable and functional system, therefore we often we act as an integrator, combining the deep technical knowledge of different disciplines to form a well-balanced justification for build, commissioning and operation of the submarine.At Rolls‑Royce we are proud to be a business that has truly helped to shape the modern world and are committed to always being a force for progress; powering, protecting and connecting people everywhere.By joining Rolls‑Royce, you'll have the opportunity to work on world-class solutions, supported by a culture that believes individuality is our greatest strength, and all perspectives, experiences and backgrounds help us innovate and enable our high-performance culture.**What you will be doing:*** Section Leader of the Operations Section within the Dreadnought Fluid Systems team – managing the teams’ tasks, deadlines and delivery with the team of ~3 engineers, reporting into the Group leader, acting alongside the GL during people managing and individuals development.* Be responsible for developing the design phases of the Primary Systems Operational functions, defining the Operating Philosophy for the Dreadnought platforms and taking on Technical Ownership of Protective Safety measure.* Updating and improving our nuclear safety case documentation, providing the verification and validation of the Operating Principles.* Define PWR3 operating principles and support the development of Operational Procedures, this will involve collaborations with the Ministry of Defence, third party partners, The Royal Navy, Current Class experienced engineers and future platforms FSE’s too. Supporting the Opdoc Cell in reviewing and structuring operating procedures, working with the Barrow Site office to produce Test Procedures and Temporary Operating Procedures.* There will be opportunity across the teams to support the Commissioning of the Nuclear Steam Raising Plant’s Primary Systems, this can vary in medium, either remotely via processes such as RRADARs, Technical Queries etc or in person at Barrow Site.**Position Qualifications:*** Understand nuclear safety case methods, principles, structures and management processes.* Understand Fluid Dynamics and Thermodynamics to aid in basic analytical problem solving.* Have had previous experience with requirements capture and basic task planning.* Confidently and pro-actively engage within internal and externals stakeholders.* Be qualified to at least degree level in a relevant (engineering) discipline.For more than 60 years Rolls‑Royce Submarines has designed, supplied and supported the nuclear propulsion plant, providing power for all UK Royal Navy nuclear submarines. To work for Rolls‑Royce Submarines an individual must hold a Security Check clearance. We will support the application for Security Clearance if you don’t already have it. Due to the nature of work we conduct, we can only progress applications from individuals who are a UK national or, in MoD approved cases, a dual national.Our vision is to ensure that the excellence and ingenuity that shaped our history continues into our future. Our multi-year transformation programme aims to turn Rolls‑Royce into a high-performing, competitive, resilient and growing company. Join us, and it can be your future vision too.Rolls‑Royce are committed to being a respectful, inclusive, and non-discriminatory workplace where individuality is valued, diverse perspectives fuel innovation, and everyone can thrive.As part of our selection process, candidates in certain locations may be asked to complete an online assessment, which can include cognitive and behavioural aptitude testing relevant to the role. If required, full instructions for the next steps will be provided.## **Job Category**Validation and Verification## **Posting Date**05 Feb 2026; 00:02## **Posting End Date**19 Feb 2026