Information Systems Security Officer (ISSO) Secret Clearance

Information Systems Security Officer (ISSO) Secret Clearance
*Eligible for full time remote

DTSI is seeking a highly technical Information Systems Security Officer (ISSO) to serve as the primary authority for the cybersecurity architecture risk posture and compliance of assigned information systems. This role is hands-on and technical in nature requiring in-depth knowledge of system architectures operating systems networks and security tooling to effectively assess implement and validate cybersecurity controls.

The ISSO will be responsible for ensuring information systems are securely implemented and maintained in accordance with DoD NIST SP 800-53 (Rev 5) ICD 503 and RMF requirements. This position supports the full system lifecycle and works closely with system engineers administrators and program stakeholders to ensure confidentiality integrity and availability (CIA) of mission-critical systems and data.

Duties and Responsibilities

• Develop a technical understanding of system architectures applications operating systems and network components to respond to Information Assurance (IA) inquiries DISA Technical Orders (DTOs) and RMF artifacts.
• Manage the cybersecurity program for assigned systems across the entire system lifecycle (design development deployment operations sustainment and decommissioning).
• Author review and maintain System Security Plans (SSPs) Security Control Traceability Matrices (SCTMs) Continuous Monitoring (ConMon) strategies POA&Ms updating and supporting all RMF documentation.
• Understand the technology to support system authorization (ATO) efforts under the DoD RMF including control selection implementation validation and assessor coordination.
• Perform technical risk assessments and vulnerability analyses correlating scan results STIG findings and architectural weaknesses to actionable mitigation strategies.
• Review validate and report STIG and SRG findings and manage artifacts within eMASS.
• Conduct and oversee security control assessments vulnerability scanning and configuration compliance validation using tools such as:
• Support incident response activities including technical analysis reporting coordination with CSSPs and remediation tracking.
• Monitor system security posture through continuous monitoring metrics analysis and compliance reporting.
• Support Security Readiness Reviews (SRRs) and Command Cyber Readiness Inspections (CCRIs) including preparation technical evidence collection and remediation.
• Maintain and update Configuration Management Plans contingency plans and conduct system contingency exercises.
• Provide technical and executive-level briefings on system risk posture vulnerabilities and remediation status to senior leadership.
• Stay current on emerging threats vulnerabilities and DoD cybersecurity directives ensuring proactive system protection.

Required Qualifications

• Bachelors degree in Cybersecurity Information Technology Computer Science or a related field (or equivalent experience).
• 5 years of relevant cybersecurity experience with at least 1 year in a senior ISSO capacity.
• In-depth understanding of DoD RMF (NIST SP 800-37) NIST SP 800-53 controls and related frameworks for revisions 4 AND 5.
• Experience managing system accreditation and continuous monitoring activities in highly regulated environments.
• 8 years experience with implementing/assessing security controls assessment for eMASS (preferred)
• Knowledge of DISA Risk Management Framework (RMF) and Security Technical Implementation Guides (STIGs)
• Knowledge of the DISA Cyber Exchange (formerly IASE)
• Knowledge of the FedRamp IL4 and IL5 requirements

Required Skills

• Strategic cybersecurity knowledge
• Master of regulatory compliance and RMF expertise
• Risk management and mitigation
• Incident response coordination
• Technical writing and documentation excellence
• Team development and cross-functional collaboration
• Proficiency in maintaining accreditation artifacts in eMASS ensuring full compliance with DISA ATO procedures.
• Master level knowledge of DISA STIGs SRGs CC SRG and Cybersecurity Service Provider (CSSP) requirements.
• Working knowledge of DoD Cloud Computing Impact Level IL5 and FedRAMP Moderate controls.
• Strong background applying and validating security controls via:
• ACAS (vulnerability scanning)
• STIG Viewer (security configuration compliance)
• HBSS / ESS (monitoring and alerting)

DoD Security Requirements

• Active Secret Clearance
• DoD 8570 IAT Level II Certification: Securityce or higher

Education

• Bachelors Degree or higher

Inclusion & Diversity
DTSI is an Equal Opportunity Employer. Applicants will receive consideration for employment without regard to race color religion sex sexual orientation gender identity national origin age protected veteran status or disability status.

Disclosure
DTSI is an equal opportunity employer that uses E-Verify to confirm work authorization. Background investigations may be conducted to determine applicants eligibility for a Department of Defense security clearance.

EEOC Know Your Rights

Why DTSI

DTSI has built an unwavering reputation of delivering cutting-edge IT solutions with a focus on exceeding customer expectations and a relentless drive to be the best in the industry. Our success undoubtedly is a direct result of our people. We are intentional in seeking individuals who are hard-working disciplined visionary and approach all tasks and interactions with an attitude of excellence. If this is you we invite you to join Team DTSI!

Benefits

• 401(k) Retirement Plan with Employer Contribution
• Paid Vacation Time
• Paid Federal Holidays
• Paid Sick Leave
• Health Insurance
• Dental & Vision Insurance
• Short and Long Term Disability
• Life Insurance
• Supplemental Insurance (Accidental Hospital Confinement Cancer Assistance Critical Illness)
• Certification & Tuition Reimbursement

Proud of Our Past. Improving the Present. Focused on the Future.

If you are unable to use our online application to apply for this position please use one of the following options to submit your resume and qualifications:

• Email: with job title in Subject line
• Mail to our corporate office:
  • DTSI
    212 N. Alamo St. Suite 300
    San Antonio TX 78205
    Attn: HR Dept- job title

Required Experience:

Unclear Seniority