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Information Security Systems Officer; ISSO

Job in Washington, District of Columbia, 20022, USA
Listing for: Guidehouse
Full Time position
Listed on 2026-09-24
Job specializations:
  • IT/Tech
    Cybersecurity, Information Security & Data Protection
Salary/Wage Range or Industry Benchmark: 74000 - 124000 USD Yearly USD 74000.00 124000.00 YEAR
Job Description & How to Apply Below
Position: Information Security Systems Officer (ISSO)
Job Family:

IT Cyber Security

Travel Required:

Up to 10%

Clearance Required:

Ability to Obtain Public Trust

What You Will Do:

Support the implementation and ongoing execution of the NIST RMF requirements across assigned authorization boundaries.

Assist in system categorization in accordance with FIPS 199 and NIST SP 800-60 guidance.

Help identify, document, and maintain applicable NIST SP 800-53 r5 security and privacy control implementations, control tailoring and inheritance.

Develop, review, and/or maintain RMF or security related documentation, including:

FIPS 199

System Security Plans (SSPs)
Plans of Action and Milestones (POA&Ms)
Privacy and risk assessments

Continuous monitoring documentation

System specific security control or organizational level standard operating procedures

Memorandums of Agreement/Understanding or Interconnection Security Agreements Support security control assessments, remediation efforts, and authorization activities.

Identify security weaknesses, vulnerabilities, and compliance gaps; document findings and work with stakeholders to develop corrective actions.

Manage and maintain POA&Ms resulting from continuous monitoring or assessment results to ensure weaknesses are tracked through to remediation and closure.

Support the preparation of boundaries for Authorization to Operate (ATO), reauthorization, and ongoing authorization activities.

Monitor systems for compliance with FISMA and organizational cybersecurity policies, standards, and procedures.

Ensure security requirements are integrated into system design, development, implementation, and operational changes.

Support continuous monitoring activities, including control status reviews, vulnerability management, configuration management, and periodic assessments.

Coordinate vulnerability scanning, review scan results, and track remediation of identified findings.

Assist in incident response coordination, reporting, investigation, and follow-up corrective actions.

Promote security best practices and help ensure systems maintain an acceptable level of risk.

Manage boundary records in the applicable governance, risk, and compliance tool.

What You Will Need:

Bachelor’s degree in computer science, information technology, or cybersecurity.

Current Security+ certificate.

Minimum (3) three years of experience in cybersecurity.

Experience utilizing enterprise cybersecurity risk management and governance tools.

Experience with cloud security.

Must be able to obtain and maintain a Federal or DoD Public Trust. Candidates must receive approved adjudication of their Public Trust prior to onboarding with Guidehouse. Candidates with an active Public Trust or existing suitability are preferred.

Working knowledge or familiarity with:

FISMA (2014):
Federal mandated framework for information securityNIST SP 800-37 Rev. 2:
Risk Management Framework for Information Systems and OrganizationsNIST SP 800-53 Rev. 5:
Security and Privacy Controls for Information SystemsNIST SP 800-53A:
Assessing Security and Privacy Controls What Would Be Nice To Have:

Working knowledge or experience with NIST IR 8467 Genomic Data Cybersecurity and Privacy Frameworks Community Profile The annual salary range for this position is $74,000.00-$. Compensation decisions depend on a wide range of factors, including but not limited to skill sets, experience and training, security clearances, licensure and certifications, and other business and organizational needs.

What We Offer:

Guidehouse offers a comprehensive, total rewards package that includes competitive compensation and a flexible benefits package that reflects our commitment to creating a diverse and supportive workplace.

Benefits include:

Medical, Rx, Dental & Vision Insurance Personal and Family Sick Time & Company Paid Holidays Parental Leave
401(k) Retirement Plan Group Term Life and Travel Assistance Voluntary Life and AD&D Insurance Health Savings Account, Health Care & Dependent Care Flexible Spending Accounts Transit and Parking Commuter Benefits Short-Term & Long-Term Disability Tuition Reimbursement, Personal Development, Certifications & Learning Opportunities Employee Referral Program Corporate Sponsored Events & Community  annual membership

Employee Assistance Program Supplemental Benefits via Corestream (Critical Care, Hospital Indemnity, Accident Insurance, Legal Assistance and  protection, etc.)Position may be eligible for a discretionary variable incentive bonus

About Guidehouse Guidehouse is an Equal Opportunity Employer–Protected Veterans,…
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