Job Description Component Definition Engineer Full Time or Part time Derby / On-Site An exciting opportunity has arisen for a Component Definition Engineer to join Rolls-Royce Submarines Component Definition Group in Derby. As a Component Definition Engineer, you can be deployed on a broad range of modelling and definition activities across various discipline groups, including Structural, Mechanical and Electrical. Your main task will be to produce and (where capability has been demonstrated) check Component Definitions (including Model Based Definitions - MBDs) in line with Engineering Standards to meet design intent, satisfying fit, form and function of the component. We are currently looking for an individual with a good understanding of modelling and drawing practices and must be able to demonstrate appropriate CAD competencies as well as good written and verbal communications. This role sits within Engineering and is based at our Raynesway site in Derby. Why Rolls-Royce? Rolls-Royce Submarines Limited is responsible for delivering the Pressurised Water Reactor (PWR) Nuclear Steam Raising Plant (NSRP) and associated systems for the Royal Navy's fleet of submarines. We work closely with the Ministry of Defence (MoD), the Submarines Delivery Agency and the Dreadnought Alliance Partners. Powering the submarines of today and building solutions for tomorrow has never been more important. We're a leader in propulsion system design and development for the Royal Navy's nuclear submarine fleet and the sole provider and technical authority. What we offer: Join us and we'll provide an environment where you can be yourself. An inclusive, digital-first culture that invests in you, gives you a platform for continuous learning, and access to an incredible breadth and depth of opportunities to grow your career. We offer excellent development, a competitive salary, and exceptional benefits. These include bonus, employee support assistance and employee discounts. What you'll be doing: In this role you will: Be influential across all stages of the design lifecycle (e.g. creating analysis models, producing tolerance stacks, creating, developing and maintaining the master model and associated definition - MBD and 2D), support Design for Manufacture activities and the manufacturing buy-off process, right through to supporting parts in-service. Managing and maintaining data integrity is vital to this role, so attention to detail is essential. Models, definitions and relevant documentation shall be created and maintained per company procedures, definition/drawing standards, design intent, timescales, cost and quality requirements. Perform self-verification of work per company standards and processes. Be willing and able to interrogate models/definitions at component and assembly levels, examining interfacing components, capable of identifying problems based on either nominal or adverse tolerance effects. Reporting of progress, issues, task, and project risks. Be aware of, and ensure the implementation of, safety, health and environmental requirements. Assist with the maintenance and improvement in the standard and quality of outputs. Collaborate and communicate with design, manufacturing, and the wider integrated project team, offering support at gated reviews and DFX sessions. Who we're looking for: At Rolls-Royce we embrace agility, are bold, pursue collaboration and seek simplicity in everything we do. These principles form our values and behaviours and are an essential component of our assessment process and are fundamental qualities that we seek for all roles. Experienced in using and/or qualification in Siemens NX, AutoCAD and Teamcenter and experienced in using British Standard and/or ASME Y14.5M drawing standards is essential. An understanding of procedures and requirements relating to Design, Health/Safety and Environmental, as well as Quality requirements. Have a good understanding in the application and use of Geometric Dimensioning and Tolerancing. IT literate (Microsoft office suite, PDM systems). Good technical and analytical skills, problem solving ability and capable of systems level thinking. Have appropriate engineering experience in conceptual and detail design, detail definition methods and a good understanding of manufacturing techniques. Good time management skills, self-motivation and decision-making abilities. We are an equal opportunities employer. We're committed to developing a diverse workforce and an inclusive working environment. We believe that people from different backgrounds and cultures give us different perspectives. And the more perspectives we have, the more successful we'll be. By building a culture of respect and appreciation, we give everyone who works here the opportunity to realise their full potential. You can learn more about our global Inclusion strategy here. To work for Rolls-Royce Submarines you need to hold a Security Check (SC) clearance without any caveats to that clearance. Rolls-Royce will support the application for Security Clearance if you don't currently already have this in place. Due to the nature of work the business conducts and the protection of certain assets, you must hold a UK nationality. Any dual nationals will require additional scrutiny and background checks prior to commencing work with RRSL. Job Category Mechanical Systems Posting Date 13 Oct 2025; 00:10 Posting End Date 19 Oct 2025PandoLogic. Keywords: Marine Engineer, Location: Derby, ENG - DE23 8NX