Senior Information Systems Security Officer (ISSO)

DAn Solutions • Reston, VA

4d • Onsite

About The Position

DAn Solutions is seeking a Senior Information Systems Security Officer (ISSO) to support a federal intelligence community program. The role helps shape and enhance cybersecurity initiatives, ensure system security compliance, manage risks, and support certification and authorization activities throughout the program lifecycle.

The ISSO collaborates with application leads, system administrators, database administrators, developers, testers, and cybersecurity stakeholders to ensure systems are developed and maintained in accordance with applicable security requirements and achieve and maintain Authorization to Operate (ATO). The position provides security guidance to development and engineering teams, supports assessment events, and coordinates with Information System Security Managers (ISSMs), Security Control Assessors (SCAs), Information System Security Engineers (ISSEs), system owners, and Authorizing Officials (AOs).

The role develops and maintains security documentation using XACTA, coordinates Interim Authorization to Test (IATT) and ATO activities, implements and validates NIST SP 800-53 controls in cloud-native Data Platform as a Service (DPaaS) environments, and applies Zero Trust principles to data services. The position requires an active TS/SCI clearance with polygraph and is primarily on-site, with seating available in Annapolis Junction, Maryland; Washington, DC; or Reston, Virginia.

Requirements

• Active TS/SCI security clearance with an active polygraph.
• Current Security+ certification or equivalent IAT Level II/III certification.
• Proficiency with XACTA and the Risk Management Framework (RMF), including management of IATT and ATO processes.
• Proficiency with Splunk.
• Experience assessing existing IT architectures against applicable security frameworks, including ICD 503.
• Experience implementing and maintaining system security documentation, including SSPs, Security Assessment Plans (SAPs), POA&Ms, and security assessment artifacts.
• Experience coordinating with ISSMs, Information System Security Engineers (ISSEs), system owners, and authorizing officials.
• 18 years of experience in security, cybersecurity, systems engineering, or a closely related field with comparable scope and responsibilities; a bachelor's degree may substitute for four years of experience, and a master's degree may substitute for six years.

Nice To Haves

• Previous experience as an ISSO or ISSE.
• Demonstrated success leading cybersecurity initiatives on significant or large-scale programs.
• Experience managing or coordinating cybersecurity teams.
• Strong communication skills, including experience engaging with customers, program leadership, engineers, and other technical stakeholders.
• Ability to communicate complex cybersecurity concepts and strategies effectively.

Responsibilities

• Conduct technical security assessments of computing environments and support cybersecurity initiatives.
• Ensure system security compliance, identify and manage risks, and support certification and authorization activities throughout the program lifecycle.
• Work with application leads, system administrators, database administrators, developers, and testers to help assigned systems achieve and maintain Authorization to Operate (ATO).
• Provide security guidance to development and engineering teams so security compliance is incorporated into system design and development.
• Support security assessment events and respond to questions and findings from Information System Security Managers (ISSMs) and Security Control Assessors (SCAs).
• Develop and maintain System Security Plans (SSPs), Plans of Action and Milestones (POA&Ms), and other required security documentation using XACTA.
• Coordinate Interim Authorization to Test (IATT) and ATO activities with cybersecurity stakeholders and Authorizing Officials (AOs).
• Implement and validate NIST SP 800-53 security controls in cloud-native Data Platform as a Service (DPaaS) environments.
• Apply Zero Trust security principles to data services, including identity management, segmentation, and flow control.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed