Systems Engineer – ITEA 6 month contract (Inside IR35) - Buckinghamshire – Hybrid (4 days p/week on site) Systems Engineers to support the re-mobilisation of the Full Operating Capability (FOC) phase of an LTE-based air-to-ground intercom system for the UK Emergency Services Network. Activities will include re-validation of system requirements, design, architecture and verification, together with technical de-risking activities to ensure the FOC programme launches with a clear, well-defined scope and minimal technical risk. Key Responsibilities * Support the re-validation of system requirements, design and architecture for the FOC programme. * Develop and support system integration, test, evaluation and acceptance activities. * Define and review verification strategies, test plans, procedures and acceptance criteria at system and subsystem level. * Identify technical risks, gaps and dependencies, implementing activities to de-risk the programme. * Review test results, manage failures and ensure verification evidence supports requirements compliance. * Compile and maintain verification documentation, including Verification Compliance Matrices and associated evidence. * Work closely with systems, hardware, software and communications engineers to resolve technical issues. * Support technical reviews and programme meetings, preparing relevant documentation and presentations. * Liaise with customers, suppliers and other stakeholders to ensure technical requirements and programme objectives are met. * Contribute to the successful re-mobilisation and delivery of the FOC phase. Experience Required * Degree in Engineering or equivalent relevant industry experience, ideally in electronics, RF communications, software or systems engineering. * At least five years' Systems Engineering experience, including recent experience in a lead or senior engineering role. * Proven experience delivering ITEA activities within complex engineering programmes, ideally in aerospace, defence or airborne systems. * Experience in system requirements, architecture, integration, verification and validation. * Experience working with complex electronic, communications or networking systems. * Strong understanding of requirements traceability, verification evidence and technical risk management. * Experience with systems engineering tools such as Polarion is desirable. * Familiarity with aerospace and defence standards, such as ARP4754, RTCA DO-160G and MIL-STD-810, is advantageous. * Strong stakeholder management, communication and technical documentation skills