An exciting opportunity has arisen for a Senior Communications Engineer to join an advanced avionics team working on cutting-edge spacecraft missions. This role will play a key part in the design, development, and verification of spacecraft communications subsystems, supporting complex missions from concept through to launch and operations. You’ll take ownership of the communications subsystem, working across disciplines including systems engineering, Command & Data Handling (C&DH), procurement, and Assembly, Integration & Verification (AIV). This is a hands-on, senior-level role requiring both strong technical expertise and the confidence to lead within a multidisciplinary environment. Key Responsibilities Own communications work packages, including subsystem design baseline and architecture, requirements management and VCD activities Develop, review, and maintain spacecraft data and RF link budgets Model and simulate space-to-ground communications links Select, procure, and manage suppliers for communications hardware. Perform antenna and multipath analysis, including interference and impingement assessments Support frequency licensing and ITU regulatory activities Support ground station selection and interface discussions with ground segment teams Plan and execute unit-level acceptance testing Generate verification and validation plans and test procedures for communications systems Manage resources, schedules, and cost e...