We are recruiting for a Principal Systems Engineer to be part of a team supporting our next generation Hostile Artillery Locating System development. Joining during a crucial part of the engineering lifecycle you will lead end-to-end systems engineering efforts, from concept through to deployment. Collaborating across cross-functional teams to support integration and qualification of technical solutions. What you'll do as a Principal Systems Engineer : Contribute to requirements specification and management for complex, multi-faceted outputs. Participate in systems integration, verification, qualification & validation. Supporting junior engineers and contribute to technical excellence across the organisation. Ensure compliance with Mil Std's, Industry Std's and regulatory requirements. Supporting activities including design reviews and peer reviews. Development of the software security plan. What you'll bring Knowledge and experience of all stages of the engineering development lifecycle. Proven experience in requirements definition, verification, qualification & validation. Experience in system level testing. CE Marking compliance for electrical and electronic equipment (EEE). Experience using IBM Engineering Requirements Management DOORS Awareness of Safety, Security and other legislative constraints. Defence industry experience. It would be nice if you had: Domain experience in an Electronics focussed role. Evidenced experience of developing training manuals for end users.