**Description** SAIC is looking for a **Senior Principal Systems Engineer** to play a key role in SAIC's Prime Program, Landmark AOS, located in Chantilly, VA. Landmark AOS is a major SETA program supporting the National Reconnaissance Office’s (NRO) Ground Enterprise Directorate (GED) in acquiring systems across their entire life cycle. As the **Senior Principal Systems Engineer** will manage task execution, provide technical/professional expertise on a variety of Systems Engineering topics, and advise the government on program activities. A successful candidate in this position will bring a record of application of systems engineering and creative thought-leadership to mature and develop revolutionary multi-intelligence solutions. Responsibilities include but are not limited to: + Provide technical leadership in planning capabilities needed to better support mission operations (e.g. automation, resiliency, situational awareness, etc.). + Analyze user needs, develop concepts of operation, and high-level systems architectures, and define capability needs and system requirements. + Work with government and contractor points of contact across multiple Agencies, Directorates and Offices to refine future ground system capabilities. + Identify and communicate key architecture and system level trades, system engineering risks, issues, opportunities, and dependencies. + Support integration of architectures with other components of the technical baseline. + Collaborate with SETA team members, engineers from various contractor and government organizations, and mission users. + Develop assessments and briefings to a variety of audiences to convey information in crisp, articulate manner. **Qualifications** Required Education and Experience: + Bachelor's and fourteen (14) years or more experience; Master's and twelve (12) years or more experience; PhD or JD and nine (9) years or more experience. Relevant experience to be substituted in lieu of degree. + Active and current Top Secret/SCI clearance with polygraph. + Proven experience in core systems engineering and analysis disciplines and processes. + Expertise and experience with the IC acquisition cycle, requirements processes, budgetary practices, and acquisition documentation. + Demonstrated ability to work in a fast paced, dynamic, and energetic environment. + Demonstrated ability to work as a team player requiring collaboration and open communication. + Strong oral and written communication skills. SAIC accepts applications on an ongoing basis and there is no deadline. Covid Policy: SAIC does not require COVID-19 vaccinations or boosters. Customer site vaccination requirements must be followed when work is performed at a customer site. REQNUMBER: 2500955 SAIC is a premier technology integrator, solving our nation's most complex modernization and systems engineering challenges across the defense, space, federal civilian, and intelligence markets. Our robust portfolio of offerings includes high-end solutions in systems engineering and integration; enterprise IT, including cloud services; cyber; software; advanced analytics and simulation; and training. We are a team of 23,000 strong driven by mission, united purpose, and inspired by opportunity. Headquartered in Reston, Virginia, SAIC has annual revenues of approximately $6.5 billion. For more information, visit saic.com. For information on the benefits SAIC offers, see Working at SAIC. EOE AA M/F/Vet/Disability