Requirements Systems Engineer We're looking for an experienced Systems Engineer to support a major, mission‑critical programme. You'll work across customers, suppliers and internal teams to define, model and deliver complex system‑of‑systems solutions, with a strong focus on MBSE and requirements engineering. The Role Lead key engineering tasks and help shape the full systems lifecycle. Work with stakeholders to define and allocate system‑level requirements. Develop models, scenarios and behavioural diagrams using MBSE tools. Capture and manage requirements in DOORS. Oversee lower‑level designs and produce engineering artefacts (designs, FMEA, compliance reports, capacity analysis, onboarding designs). Support architectural definition and trade studies. Contribute to milestone reviews and technical documentation. Skills & Experience Strong experience with modelling tools (Sparx EA, Cameo/MagicDraw). Skilled in frameworks/languages such as TOGAF, MODAF, NAF, SysML or ArchiMate. Background in complex integration programmes. Experience modelling behaviour, interfaces and functional requirements. Solid understanding of virtualised systems and service‑oriented architectures. Confident communicator able to work across multiple stakeholders. Desirable ITIL knowledge. Experience in safety‑related or regulated environments (e.g., Air Traffic Management). Strong present...