Principal Systems Engineer

Sidus Space®, Inc. (NASDAQ: SIDU) is an innovative space and defense technology company offering flexible, cost-effective solutions, including satellite manufacturing and technology integration, AI-driven space-based data solutions, mission planning and management operations, AI/ML products and services, and space and defense hardware manufacturing. With its mission of Space Access Reimagined®, Sidus Space is committed to rapid innovation, adaptable and cost-effective solutions, and the optimization of space system and data collection performance. With demonstrated space heritage, including manufacturing and operating its own satellite and sensor system, LizzieSat®, Sidus Space serves government, defense, intelligence, and commercial companies around the globe. Strategically headquartered on Florida’s Space Coast, Sidus Space operates a 35,000-square-foot space manufacturing, assembly, integration, and testing facility and provides easy access to nearby launch facilities. But it’s our people who truly set us apart. We foster a culture of collaboration, continuous learning, and agility, empowering our team to innovate and evolve in a rapidly changing industry. Join us at Sidus Space to be part of something extraordinary and help shape the future of space access! Job Summary The Principal Systems Engineer will be part of team responsible for the design, development, assembly, integration, test, and verification lifecycle activities for development and sustainment of satellites and related product technologies. This role requires strong technical leadership, cross functional coordination, and full life-cycle engineering expertise. The selected candidate will work onsite in Cape Canaveral, Florida. Essential Duties/Responsibilities Drive research and development activities focused on new satellite and mission system technologies, including the creation of specifications, interface control documents, and comprehensive test artifacts supporting advanced structural, instrumentation, communication, propulsion, and operational system integration. Support the design, prototyping, and validation of PCB‑level electronics for spacecraft and ground systems, collaborating with electrical, mechanical, and software teams to ensure seamless subsystem integration and high‑reliability performance. Partner with cross‑functional engineering groups to troubleshoot complex issues across satellite subsystems, applying rigorous methodologies to refine designs, evaluate new technologies, and mature concepts into flight‑ready hardware. Provide expert guidance for installation, functional testing, iterative redesign, and technology upgrades spanning satellite architectures, ground infrastructure, and mission operations environments. Maintain detailed engineering documentation including verification matrices, test results, configuration records, and data packages generated throughout the development lifecycle. Deliver clear, technically…