Senior ISSO

Principal Duties and Responsibilities (*Essential Functions):

• Serve as the Senior ISSO for tactical weapons platforms, ensuring full cybersecurity compliance.
• Manage and maintain all system security documentation in eMASS, ensuring accurate and timely updates.
• Prepare and submit RMF security authorization packages, coordinating with ISSMs and Authorizing Officials (AOs) for ATO approval.
• Ensure proper inheritance mapping and documentation within eMASS for enclave and system-level security controls.
• Analyze security artifacts, POA&Ms, and risk assessments to maintain continuous system authorization.
• Develop and enforce cybersecurity policies, procedures, and controls to maintain Authority to Operate (ATO).
• Conduct security audits, compliance reviews, and training to ensure security awareness across teams.
• Provide cybersecurity risk advisory support to senior leadership, program managers, and system engineers.
• Implement security controls for tactical weapons platforms, ensuring compliance with DoD and Army cybersecurity frameworks.
• Coordinate with PMs, developers, and cyber teams to integrate security into weapons platform design and sustainment.

At COLSA, people are our most valuable resource and centered at our core value. We invite you to unite your talents with opportunity and be a part of our "Family of Professionals!" Learn about our employee-centric culture and benefits here .

Required Experience

• Associate's Degree or Bachelor's Degree in related field, or equivalent experience; advanced degree preferred.
  • Minimum of 3 related certifications may be used in place of unrelated degree field.
• Minimum of 12 plus years of work-related experience.
• Strong knowledge base preferred in the areas of: real-time security situational awareness, operational network systems, and security monitoring
• Ability to clearly present and communicate technical approaches and finding
• Deep expertise in eMASS, including security package development, RMF workflows, and continuous monitoring.
• Extensive experience with RMF (DoDI 8510.01), NIST 800-53 controls, and DoD cybersecurity compliance.
• Hands-on experience with tactical weapons platforms and securing embedded systems, networks, and mission-critical assets.
• Strong understanding of Defense-in-Depth strategies, cryptographic security, and secure system engineering.
• Experience leading cybersecurity audits, vulnerability assessments, and compliance reviews.
• Experience in navigating POA&M management, and security control assessments (SCAs).
• Incident response experience, including forensic analysis, log reviews, and coordination with Army Cyber Command (ARCYBER).
• IAT Level III or IAM Level II Certification (e.g., CISSP, CISM, CAP, CASP+).
• Active DoD Secret Security clearance; US Citizenship required.

Preferred Qualifications

• Master's Degree in Cybersecurity, Computer Science, or related field.
• Experience with DoD tactical networks and secure communications (e.g., SIPRNet, NIPRNet).
• Familiarity with red/blue team cybersecurity assessments and cyber threat intelligence in Army environments.
• Hands-on experience with PKI, cryptographic key management, and cross-domain solutions.
• Background in Industrial Control Systems (ICS) security or Embedded System Security.

Applicant selected will be subject to a government security investigation and must meet eligibility requirements for access to classified information. COLSA Corporation is an Equal Opportunity Employer, Minorities/Females/Veterans/Disabled. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, or national origin.