Ready to Defend the Future? Join Our Elite Security Team! BAE Systems is seeking a passionate and driven Alternate CSSO (ACSSO) to join our rapidly expanding security team! This isn't just a job – it's a chance to elevate your career in the exciting world of Aerospace & Defense. Become part of BAE Systems, a globally recognized leader in innovation and a trusted partner to the U.S. Government. You'll be at the forefront of protecting cutting-edge technologies across a multitude of Special Access Programs (SAPs) and Sensitive Compartmented Information (SCI), directly contributing to critical national security missions. Imagine making a real impact, you’ll be supporting a diverse portfolio of dynamic programs, working alongside brilliant minds and leaders. As a ACSSO, you'll collaborate with leaders across the organization and build key relationships with internal and external customers. This fast-paced, team-oriented role will help you develop highly sought-after skills and ensure your contributions are recognized. If you're a motivated security professional looking for a challenging and rewarding opportunity, we want to hear from you! Responsibilities include: • Ensure adherence to government and company security policies, providing expert guidance and direction to program teams • Serve as the primary point of contact for US Government Program Security Officers(PSO) and/or Special Security Officer (SSO) and collaborate closely with program managers • Oversee security for prime and subcontracts, including developing and maintaining DD254s and providing essential security guidance • Author, implement, and maintain comprehensive program-level security plans, procedures, and instructions • Lead formal self-inspections, track corrective actions to completion, and conduct thorough security audits • Deliver engaging security education and awareness training, conduct briefings, and provide classification guidance to employees • Investigate and resolve security incidents • Contribute to a holistic security posture by supporting other critical disciplines, including Personnel, Physical, Cyber, COMSEC, and Visitor Control • Build and maintain strong working relationships across departments, business areas, and the company segments to foster a positive and productive work environment • Ability to obtain Special Access Program (SAP) and/or Sensitive Compartmented Information (SCI) Accesses • Willingness to complete a Counterintelligence Scope Polygraph (CSP) • Participate in after-hours alarm response • Serve as a SAP Accountability Officer (SAO) • Perform other duties as assigned Because of the need for consistent, in-person collaboration and/or the requirement to perform all work onsite due to the nature of this particular role, it will be performed full- time on site. This means work will be conducted on location at a BAE Systems facility 100% of the time.