The Information Assurance Security Specialist - Senior (A&A) is responsible for performing assessment and authorization coordination, advising and assisting the customer with Risk Management Framework (RMF), and developing a Plan of Action and Milestones for resolving network deficiencies in accordance with DODI 8510.01. The role involves assessing network compliance against controls listed in DODI 8500.2 and creating A&A packages to ensure the integrity of customer systems by identifying and mitigating potential shortcomings and vulnerabilities.