Job Description Subject to formal establishment, a vacancy will arise for a OF4 to serve as Cyber Mission Assurance Adviser & Projects Officer at MOD Corsham on ADC Terms and Conditions of Service (TCoS), with an initial proposed start date of June 2026 Unit Role : DCEMF is Defence’s lead for the Cyber & Electromagnetic (CyEM) Domain. It provides leadership across the Military Commands for CyEM activities, ensuring coherence, coordination and unity of effort. Position Role: Provide delivery and advice to the development, use and training of Cyber Mission Assurance across DCEMF and wider UK Defence. Responsibilities: Provide advice and guidance across DCEMF, and as directed, on CMA doctrine and how to apply it to DCEMF tasks. Maintain Defence CMA doctrine, working with Defence Futures and other stakeholders (e.g., DCA / IWC) as required. Maintain a body of CMA training material, including Joint Tactics, Techniques & Procedures (JTTP). Teach DCEMF / wider Defence / NATO / coalition entities on CMA to be competent on CMA. Conduct Master Classes as required. Support CMA operational tasks as directed, including with NATO, 5-Eyes / coalition. Liaise with NATO countries and 5-Eyes countries on CMA, to achieve collective understanding. 7. Support Regular DCEMF colleagues in the conduct of CMA in Ops / Exs in 2026 – 2027, including the NATO STEADFAST and UK HIGHMAST series of events.