Principal Systems Engineer – RF / Satellite Communications Location: Hereford, Herefordshire (Hybrid – 3 days onsite) A well-established UK engineering organisation operating at the forefront of satellite communications and RF systems are looking to appoint a Principal Systems Engineer to take ownership of complex products used in critical RF / SatCom infrastructure worldwide. This role suited to someone who thrives on technical ownership, systems thinking, and cross-disciplinary leadership rather than narrow specialism. The Role As a Senior Systems Engineer, you’ll act as the technical glue across engineering disciplines, owning system-level intent from early requirements through design, integration, validation, and release. You’ll work closely with RF, electronics, mechanical, and software teams to ensure robust, high-quality system delivery. Key Responsibilities Own and manage system and product requirements, translating stakeholder needs into clear engineering intent Lead system architecture and integration across RF, electronics, mechanical, and software domains Drive design reviews and technical decision-making at product and system level Support hardware / software integration, system bring-up, and validation testing Identify and manage technical risk throughout the product lifecycle Produce and maintain high-level system documentation, block diagrams, and connectivity definitions What We’re Looking For Strong senior-level experience in systems or product engineering within satellite communications, RF systems, or complex electronics Proven ability to work across full product lifecycles in a structured engineering environment Broad technical understanding spanning RF, electronics, mechanical, and embedded/software systems Confident communicator who can influence across engineering teams and stakeholders