GPS IIIF - Space Vehicle Systems Engineer

Stellar Solutions, a nationally recognized  Great Place To Work,  delivers engineering solutions across commercial space and national security missions - from innovative new entrants to established space systems organizations.

We bring talented, energetic, and immediately productive professionals to meet critical customer needs in systems engineering and integration, mission operations, program management, and strategic planning - helping teams deliver resilient capability to the mission with speed, quality, and focus.

Stellar Solutions is seeking a Space Vehicle Systems Engineer to support the U.S. Space Force's GPS III Follow-On (GPS IIIF) program. GPS IIIF represents the next generation of the Global Positioning System, introducing advanced satellite capabilities designed to strengthen positioning, navigation, and timing (PNT) services for military and civilian users worldwide. With enhanced protection against signal interference, improved precision, and new capabilities supporting search and rescue, GPS IIIF is a critical investment in the resilience of one of America's most important space-based infrastructures.

This position offers the opportunity to contribute directly to the engineering, integration, testing, and successful delivery of spacecraft that will support national defense and global navigation for decades to come.

The Space Vehicle Systems Engineer will support the Government team in overseeing the technical development, integration, verification, and testing of GPS IIIF spacecraft and associated subsystems. Working closely with Government stakeholders and contractor engineering teams, this individual will assess system performance, evaluate technical progress, identify integration risks, and support key acquisition and engineering milestones. The role requires a strong understanding of spacecraft engineering disciplines, sound technical judgment, and the ability to translate complex engineering information into actionable insights that support program execution and mission readiness.

Key responsibilities include:

• Support systems engineering activities across the spacecraft development, integration, verification, and test lifecycle.

• Evaluate the design, development, and integration of spacecraft subsystems, including structures, mechanisms, electrical power, attitude control, thermal, propulsion, communications, and command systems.

• Assess spacecraft technical performance, subsystem interfaces, and system-level integration to identify potential risks, issues, and impacts to program objectives.

• Support major space system and DoD program reviews, including SRR, SDR, SFR, PDR, CDR, MRR, TRR, FCA, and PCA, as applicable.

• Review engineering documentation, technical analyses, and contractor-provided data to support informed Government decisions.

• Evaluate spacecraft integration and test planning, including system performance testing, thermal vacuum (TVAC), acoustic, and electromagnetic interference and compatibility (EMI/EMC) testing.

• Analyze subsystem and program-level integrated master schedules (IMS) and earned value management (EVM) data to assess technical progress, schedule performance, and emerging program risks.

• Support requirements analysis, verification activities, and the assessment of system compliance with technical and mission objectives.

• Collaborate with Government customers, contractor engineering teams, and multidisciplinary stakeholders to resolve technical issues and maintain alignment across engineering activities.

• Use collaboration and program management tools, including Confluence and Jira, to support technical coordination, issue tracking, and program execution.

• Develop and communicate engineering assessments, technical findings, and recommendations that help the Government maintain confidence in spacecraft development and mission readiness.

Required Qualifications:

• Bachelor's degree in Engineering, Mathematics, Physics, or Computer Science.

• 4+ years of experience in satellite systems engineering, planning, integration, and testing.

• Experience supporting the development, integration, and testing of multiple spacecraft subsystems and components, including structures, mechanisms, electrical power, attitude control, thermal, propulsion, communications, or command systems.

• Experience with space system and DoD program reviews, including SRR, SDR, SFR, PDR, CDR, MRR, TRR, FCA, or PCA.

• Experience using collaboration tools such as Confluence or Jira.

• Experience…