Sensors Systems Engineer

Spacecraft represent the most pressing unmet need across the entire aerospace industry. As more launch vehicles come online and the cost to orbit decreases, more companies launching payloads to space continue to emerge. For the first time in history, this influx of payload companies combined with reduced launch costs has resulted in a massive increase in need for commercial spacecraft platforms, known as satellite buses. These buses hold the payloads of our customers and are flown on launch vehicles. Apex manufactures these satellite buses at scale using a combination of software, vertical integration, and hardware that is designed for manufacturing. Our spacecraft enable the future of society: ranging from earth observation to communications and more. We’d love for you to join us on our mission of providing humankind access to the galaxy beyond our planet. ABOUT THE ROLE Apex is looking for a Sensor Systems Engineer to own our sensor products across the full development lifecycle, from clean-sheet concept to qualified, production-ready hardware. This role sits at the intersection of design, analysis, test, and production, acting as the technical authority that carries a sensor from architecture through qualification and into the field. You'll own how our sensors perform in the real world, driving trade studies that balance performance, cost, and risk, leading verification and qualification campaigns, and closing the loop through failure investigations that sharpen every future design. Responsibilities: System ownership - Own sensor products through the full development lifecycle, including conceptualization, architecture, design, analysis, prototyping, qualification, and production - Support production as the hardware Responsible Engineering Authority (REA), providing technical solutions, guidance, and documentation when issues arise - Manage project budget, schedule, and tasking within a multidisciplinary team of engineers Test Engineering - Own verification and validation activities for sensor subsystem requirements - Develop and execute qualification and test campaigns, including creation of test plans, procedures, and reports. Collaborate with cross-functional teams to develop and maintain test stations and ground support equipment (GSE/STE) - Perform failure investigations and root cause analyses, incorporating lessons learned into future designs and test approaches Technical Development - Perform system- and component-level trade studies to evaluate architectures and designs to optimize performance, cost, schedule, and technical risk - Collaborate with teams across structures, thermal, optics, avionics, software, GNC, manufacturing, mission assurance, and supply chain to develop integrated sensor solutions - Present technical work at design reviews and create clear, thorough engineering documentation Required Qualifications: - Bachelor's degree in Aerospace Engineering, Systems Engineering, Electrical Engineering, Mechanical Engineering, Computer Engineering, Software Engineering, Applied Physics, or a related discipline - Hands-on experience developing, prototyping, integrating, and/or testing multidisciplinary systems - Demonstrated hardware, project, or product ownership experience - Strong understanding of test engineering fundamentals and methodologies - Demonstrated leadership, time management, and organizational skills - Comfortable researching and creating clean-sheet subsystem architectures and designs within an open design space - Self-motivated and eager to learn in a fast-paced, collaborative engineering environment Preferred Qualifications: - 1-2 years of experience in aerospace, automotive, or other technical product development/test - Master's degree in Aerospace Engineering, Systems Engineering, Electrical Engineering, Mechanical Engineering, Computer Engineering, Software Engineering, Applied Physics, or a related discipline - Experience developing, designing, implementing, and/or testing sensor system…