Information System Security Officer (ISSO)
Apply Job ID 42218 Date posted 07/24/2026Job Family:
Cyber Engineering (CYE)
Travel Required:
Clearance Required:
What You Will Do
The Information Systems Security Officer (ISSO) serves as the primary liaison between the system owner and the Information Systems Security Manager (ISSM). The ISSO is responsible for maintaining the appropriate operational security posture for assigned information systems and ensuring compliance with Federal Information Security Management Act (FISMA) requirements, National Institute of Science and Technology (NIST) Cybersecurity Framework and Intelligence Community (IC) security policies.
What You Will Need
An ACTIVE and MAINTAINED TS/SCI Federal or DoD security clearance with a COUNTERINTELLIGENCE (CI) polygraph
Bachelor’s degree in computer science, Information Technology, Cybersecurity, or related field
Minimum of SIX (6)+ years of experience in cybersecurity with minimum of THREE (3) years in ISSO/RMF roles
Strong understanding of security frameworks and compliance standards (e.g., NIST, RMF SP 800-53 Rev 5, DoD 8570/8140).
Current Security+ certification (or equivalent DoD 8570 IAT Level II certification
Current DoD 8570 IAT Level II Certification, such as Security+ (Level III preferred i.e. CISSP, CISM)
Experience utilizing enterprise cybersecurity risk management and governance tools (XACTA, ServiceNow)
Extensive knowledge of cloud security (Azure & AWS)
What Would Be Nice to Have
Master’s Degree in in Computer Science, Information Technology, Cybersecurity, or related field
Experience with security Tools (ACAS/Nessus, Splunk, etc.)
Project management experience
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
Position may be eligible for a discretionary variable incentive bonus
Parental Leave and Adoption Assistance
401(k) Retirement Plan
Basic Life & Supplemental Life
Health Savings Account, Dental/Vision & Dependent Care Flexible Spending Accounts
Short-Term & Long-Term Disability
Student Loan PayDown
Tuition Reimbursement, Personal Development & Learning Opportunities
Skills Development & Certifications
Employee Referral Program
Corporate Sponsored Events & Community Outreach
Emergency Back-Up Childcare Program
Mobility Stipend
About Guidehouse
Guidehouse is an Equal Opportunity Employer–Protected Veterans, Individuals with Disabilities or any other basis protected by law, ordinance, or regulation.
Guidehouse will consider for employment qualified applicants with criminal histories in a manner consistent with the requirements of applicable law or ordinance including the Fair Chance Ordinance of Los Angeles and San Francisco.
If you have visited our website for information about employment opportunities, or to apply for a position, and you require an accommodation, please contact Guidehouse Recruiting at 1-571-633-1711 or via email at RecruitingAccommodation@guidehouse.com. All information you provide will be kept confidential and will be used only to the extent required to provide needed reasonable accommodation.
All communication regarding recruitment for a Guidehouse position will be sent from Guidehouse email domains including @guidehouse.com or guidehouse@myworkday.com. Correspondence received by an applicant from any other domain should be considered unauthorized and will not be honored by Guidehouse. Note that Guidehouse will never charge a fee or require a money transfer at any stage of the recruitment process and does not collect fees from educational institutions for participation in a recruitment event. Never provide your banking information to a third party purporting to need that information to proceed in the hiring process.
If any person or organization demands money related to a job opportunity with Guidehouse, please report the matter to Guidehouse’s Ethics Hotline. If you want to check the validity of correspondence you have received, please contact recruiting@guidehouse.com. Guidehouse is not responsible for losses incurred (monetary or otherwise) from an applicant’s dealings with unauthorized third parties.
Guidehouse does not accept unsolicited resumes through or from search firms or staffing agencies. All unsolicited resumes will be considered the property of Guidehouse and Guidehouse will not be obligated to pay a placement fee.