Job title: Systems Engineer - DOORS NG Rate: 83 per hour inside ir35Location: Reading/hybrid (2-3 days per week on site)Contact: 6 months+ Job description:I am looking for a Systems Engineer within product delivery for a client of mine who are a leading tech and engineering firm operating within the UK defence sector. You''ll lead the digital shift from legacy tools to DOORS NG, delivering end-to-end requirements lifecycle management across systems, software, and domain engineering. You''ll enable traceable, auditable, and governed requirements practices, integrating partners, suppliers, and MBSE models into a seamless Digital Thread. Your leadership ensures certified capabilities, streamlined change management, and a single source of truth across complex, regulated programmes. Responsibilities: Own the delivery, migration, and continuous improvement of Requirements Engineering capabilities.Lead the controlled transition from legacy RM tools to DOORS NG, ensuring safe coexistence, data quality uplift, and integration with MBSE, ALM, PLM, and Test.Define roadmaps, prioritize backlogs, and implement governance, naming conventions, link semantics, and quality metrics.Enable full end-to-end traceability from stakeholder needs through verified and certified system capabilities.Manage vendors, suppliers, and cross-partner integrations to deliver scalable, compliant, and future-ready solutions.Drive workforce adoption with training, role-based onboarding, and change programmes.Expe