Learn what a Systems Engineer does in aerospace and defence, typical day-to-day tasks, the skills employers look for, how to get into the role and how to tailor your CV for UK opportunities.
Thinking about a career as a Systems Engineer? This role sits at the centre of complex programmes, bringing together multiple engineering disciplines to ensure aircraft, mission systems, and supporting equipment work as a coherent, safe, and reliable whole. Here, we’ll walk through what a Systems Engineer does day‑to‑day, how to become one, what to include on your CV, and the related roles you might explore across defence aviation, systems integration, and engineering management.
A Systems Engineer ensures that complex aerospace and defence products, from aircraft subsystems and mission electronics to support equipment and ground systems, are designed, integrated, tested, and verified. It is a valuable role that manages requirements from navigation and communication to flight control and compliance. You’ll play a role in managing interface definitions, risks, and verification plans across the entire lifecycle of any electronic system, from concept and design through to test, certification, and in‑service support.
During your day‑to‑day work as a Systems Engineer in an avionic environment, you might work on system architectures, developing verification/validation plans (V&V), contributing to airworthiness and safety assessments, and supporting defect investigations. You will see aviation electronics through from design to ongoing support, so you will be involved during every stage of creation and maintenance.
You’ll collaborate with specialists in avionics (B2), mechanical/structures (B1), software, power, hydraulics, propulsion, and mission systems, as well as with Continuing Airworthiness Management Organisation (CAMO), maintenance, and operations teams. The work is structured and cross‑functional, with a strong emphasis on documentation accuracy, test evidence, and compliance. This role suits people who enjoy solving complex problems, working at system‑of‑systems level, and turning stakeholder needs into practical, testable engineering solutions.
There are multiple routes into Systems Engineer roles. Many professionals start with a degree in aerospace, engineering, or similar. Early‑career exposure through placements, graduate schemes, or junior systems/requirements roles can accelerate progress. Similar job roles also offer progression into these roles including Design Engineer, Avionics Engineer, or Airworthiness Engineer. You will also want experience with model-based systems engineering (MBSE) or system modelling (e.g. SysML/UML). Security clearance is necessary for defence roles.
A strong Systems Engineer CV should show that you can manage complexity, communicate clearly, and deliver evidence‑based engineering outcomes. Useful experience to mention includes working with system architectures, interface control documents (ICDs), V&V planning, and data analysis as these will make up a large part of your role. You will also want to include measurable outcomes of your work, including “improving test coverage by 15%”, as this will help evidence your skills and experience to catch the hiring manager’s attention.
Systems Engineers build versatile skills that translate across many technical and leadership roles. Some similar roles to Systems Engineers within the aerospace and defence industries include Mechanical Systems Engineer, B2 Engineer, or Platform Systems Engineer. Each role requires strong systems capabilities, data capture, and reporting abilities.
Whether you’re looking to expand your career or skillset, there are a variety of other jobs available in the aerospace and defence environment. You might consider roles such as Integration and Test Engineer, Avionics Systems Engineer, Safety and Airworthiness Engineer, Requirements Engineer, Verification and Validation Engineer, Flight Test Engineer, or Platform Systems Lead.
With experience, many Systems Engineers progress into more senior, supervisory, or managerial positions. Typical progression includes Senior or Principal Systems Engineer, Systems Architect, Engineering Manager, or Chief or Lead Engineer. These roles require both a strong understanding of electronics and system engineering, as well as people management and leadership. There are also strong pathways into programme engineering, digital engineering, model-based systems engineering (MBSE) leadership, mission systems, and through‑life support roles.
Systems Engineer roles are available across the UK with defence primes, original equipment manufacturers (OEMs), systems integrators, maintenance, repair, and operations (MROs), and specialist consultancies. Opportunities span concept design, integration labs, flight‑test support, and in‑service engineering. Depending on project needs and security requirements, roles may be on‑site, hybrid, or embedded with operators at Ministry of Defence (MoD) locations. Some core geographical locations hiring for this role include Bristol, Manchester, Oxford, Bournemouth, and Glasgow.
Yes, a Systems Engineer is a highly regarded, future‑proof career. You’ll work on complex, meaningful programmes with clear progression into senior technical leadership, architecture, or engineering management.
Some skills you’ll need to be a good Systems Engineer includes strong analytical thinking, clear communication, and structured problem‑solving. Confidence with requirements, interfaces, V&V planning, and configuration control is essential. Familiarity with safety/airworthiness and test environments adds significant value.
The biggest challenges that Systems Engineers face include balancing competing constraints (performance, safety, cost, schedule), managing change across many stakeholders, and maintaining traceable evidence throughout the lifecycle. Staying organised and communicative is key.
Great Systems Engineers are curious, methodical, and collaborative. They listen well, simplify complexity, and keep teams aligned on the “why” behind design decisions. It is essential you do this all while maintaining rigorous attention to detail.
