Our client, a leading player in the Defence and Security sector, is currently seeking a highly skilled Principal Mechanical Avionics Engineer to join their team in Marlow on a permanent basis. The Avionics Business Unit designs, develops, and maintains complex avionics systems and products, including standard communications, navigation, and electronic warfare equipment for demanding aerospace environments. This role is pivotal in providing innovative solutions to challenging avionics design problems throughout the full development lifecycle, from requirements capture to verification.Key Responsibilities:Support the generation of new business by managing bids, developing concept designs, task estimation, and generating proposalsDesign, develop, and test innovative solutions to avionics design problemsMaintain knowledge on emerging technologies and incorporate relevant innovations into product designsConduct requirements analysisGenerate documentation to support product development, qualification, and verificationSupport the qualification and review of designs to requirements, including formal testing and analysisSupport, develop, and mentor mechanical design engineers within the business unitLine management of a team of Mechanical Engineers, including resource allocation and work package managementJob Requirements:Significant practical and theoretical mechanical design experienceStrong understanding of electro-mechanical product design and environmental testing for aerospace p