Information System Security Officer (ISSO)

About the OrganizationNow is a great time to join Redhorse Corporation. Redhorse specializes in developing and implementing creative strategies and solutions with private, state, and federal customers in the areas of cultural and environmental resources services, climate and energy change, information technology, and intelligence services. We are hiring creative, motivated, and talented people with a passion for doing what's right, what's smart, and what works.
About the Role:Redhorse is seeking a highly skilled Information System Security Officer (ISSO) supporting the Army INSCOM G-6 at Fort Belvoir, VA. In this critical role, you will be responsible for the overall security posture of complex information systems, ensuring compliance with stringent DoD and NIST guidelines. You will lead a team of cybersecurity professionals, directly impacting the security of sensitive national security systems and contributing significantly to Redhorse's mission of transforming how the government uses data and technology. This position offers the opportunity to work on high-impact projects within a dynamic and collaborative environment.

Key Responsibilities:

• Oversee the security of information systems, ensuring compliance with DoD and NIST guidelines (AR 25-2, DA 25-2-14, NIST SP 800-53).
• Manage eMASS records, validate security controls, assess scan results, and track Plan of Action and Milestones (POA&M) progress.
• Lead ongoing monitoring efforts to maintain system security and compliance, identifying and mitigating risks proactively.
• Manage the daily activities and professional development of a team of Cybersecurity Analysts.
• Collaborate with the Organization Information System Security Manager (O-ISSM) to achieve and maintain Authorization to Operate (ATO) for systems on DoD/IC networks.
• Provide regular status reporting to government leads, promptly addressing risks and security issues.
• Collaborate with Security Control Assessors to conduct comprehensive risk assessments of systems and their impact on networks and mission data.
• Develop and maintain cybersecurity policies, procedures, and documentation (Standard Operating Procedures (SOPs), Tactics, Techniques, and Procedures (TTPs), etc.).

Required Education/Clearance:

• Bachelor's degree in a STEM field + 12 years of cybersecurity experience; OR 
• Master's degree in STEM + 10 years of cybersecurity experience; OR 
• PhD in STEM + 8 years of cybersecurity experience.
• Must meet DoD 8140/8570.01-m requirements for a privileged user on TS/SCI systems.
• Active Top Secret (TS) security clearance with eligibility for Sensitive Compartmented Information (SCI) and NATO access prior to starting work.

Required Experience:

• 10 years of experience validating system security controls and managing vulnerabilities.
• 8 years of experience with Risk Management Framework (RMF) and eMASS.
• 5 years of experience tracking and resolving POA&Ms.
• 3 years of experience performing continuous monitoring.

Desired Experience:

• We encourage all candidates who meet the basic requirements to apply, even if you do not have all of the following experience:
• Experience working with DISA Security Technical Implementation Guides (STIGs), Security Requirement Guides (SRGs), and security guides.
• Experience leading a team of cybersecurity professionals on large Department of Defense contracts.
• Experience with DataBricks, GitLab, or Jira.
• Advanced certifications (e.g., CISSP, CISM).
• Experience with cloud security architectures.

Equal Opportunity Employer/Veterans/Disabled  Accommodations:If you are a qualified individual with a disability or a disabled veteran, you may request a reasonable accommodation if you are unable or limited in your ability to access job openings or apply for a job on this site as a result of your disability. You can request reasonable accommodations by contacting Talent Acquisition at Talent_Acquisition@redhorsecorp.com Redhorse Corporation shall, in its discretion, modify or adjust the position to meet Redhorse’s changing needs.This job description is not a contract and may be adjusted as deemed appropriate in Redhorse’s sole discretion.