Guidance, Navigation & Controls Engineer III (Clearance Required)

A Guidance, Navigation & Controls Engineer III at Sierra Space is a mid-level engineering role focused on advancing spacecraft navigation and control capabilities for space and defense missions. The position supports development and validation of mission-critical GNC systems within multidisciplinary teams and contributes to Sierra Space’s efforts to sustain safe and secure operations in low Earth orbit and beyond. The role requires an active Top Secret U.S. security clearance and U.S. citizenship.