To lead and implement comprehensive systems engineering efforts across the full lifecycle, applying systems thinking to analyze, design and integrate complement interdependent components. This role drives stakeholder and operational analysis, defines and manages requirements and develops functional and logical architectures using model-based methods within PLM frameworks. It oversees physical product definition, interface management, change control, design integration and testing, and system verification and validation, while developing and maintaining operation concepts. The position coordinates cross-disciplinary collaboration, identifies and mitigates technical risks, and supports value engineering through cost and feasibility analyses. It documents and communicates technical progress to both technical and non-technical audiences, ensures compliance with X-energy quality assurance procedures, and upholds professional standards in all communications. Additional duties may be assigned as needed.