System Engineer - CCSDS andamp; LunaNet (LLD Focus) Overview We are seeking a System Engineer with strong CCSDS and LunaNet experience to support the detailed design and implementation of space communication architectures. The role focuses on low-level system design, interface definition, and protocol implementation, rather than high-level architecture. Key Responsibilities Develop Low-Level Design (LLD) documentation for space communication systems. Implement and define interfaces aligned with CCSDS standards. Support LunaNet-compatible architecture and protocol implementation. Define detailed message flows, protocol stacks, and interface control documents (ICDs). Work with software, network and flight/ground segment teams to ensure interoperability and standards compliance. Support system integration, verification and validation activities. Contribute to simulation and test scenarios for deep-space communications. Analyse link performance, data routing and network behaviours within LunaNet environments. Required Skills andamp; Experience Strong experience with CCSDS standards (eg space packet protocol, CFDP, DTN/BP, TM/TC). Experience with LunaNet architecture and interoperability concepts. Proven work on Low-Level Design (LLD) and interface definition. Experience with deep-space communications or space networking systems. Familiarity with Delay/Disruption Tolerant Networking (DTN). Experience writing ICDs, protocol specifications and interface