System Engineer - CCSDS & LunaNet (LLD Focus)

System Engineer - CCSDS & 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 & 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 documentation. Experience supporting system integration and test campaigns. Desirable Experience with NASA or ESA communication architectures. Knowledge of optical communications or advanced space networking. Experience with space mission ground/flight systems integration.