Senior Information Systems Security Officer (ISSO)

Senior Information Systems Security Officer (ISSO)Location: Annapolis, MD / Reston, VA / Washington, DCWork Model: 100% Onsite (SCIF Environment)Work Type: Full-TimeExperience Required: 13+ YearsThe Senior ISSO will support mission-critical cybersecurity initiatives within a highly secure government environment. This role involves risk management, compliance, ATO processes, and system security documentation , ensuring systems meet stringent federal and intelligence community security standards.This position requires deep expertise in RMF, XACTA, Splunk, and ICD 503 compliance frameworks , along with active TS/SCI clearance with CI Polygraph.Key ResponsibilitiesCybersecurity & Compliance• Conduct technical security assessments and risk analysis• Ensure system compliance with RMF and ICD 503 frameworks• Support full lifecycle ATO/IATT processesDocumentation & RMF Activities• Develop and maintain SSPs, POA&Ms, SAPs, and security artifacts• Use XACTA for documentation and compliance tracking• Coordinate with ISSMs, ISSEs, AOs, and system ownersATO & Risk Management• Drive ATO and IATT efforts across programs• Implement and validate NIST 800-53 security controls• Support audits and security assessment eventsTechnical & Operational Security• Work with developers, DBAs, and system admins for compliance• Apply Zero Trust principles in cloud/data environments• Utilize Splunk for monitoring and analysisMust-Have Qualifications• Active TS/SCI clearance with CI Polygraph (Mandatory)• Security+ or IAT II/III Certification (Active)• 13+ years of experience in cybersecurity / systems engineering• Strong experience with RMF (Risk Management Framework)• Proficiency in XACTA and ATO/IATT processes• Experience with Splunk• Experience with ICD 503 / NIST 800-53 frameworks• Experience creating SSPs, POA&Ms, SAPs, and security documentation• Ability to work in SCIF (100% onsite)Preferred Qualifications• Prior ISSO or ISSE experience• Experience leading cybersecurity programs• Team leadership and mentoring experience• Strong stakeholder communication skillsCore Competencies• Cybersecurity compliance & RMF• Risk management & ATO processes• Documentation & audit readiness• Technical security expertise• Communication & leadershipWork Environment• Secure SCIF environment• Mission-critical government systems• Highly regulated cybersecurity settingRecruiter Submission Template –Full Name:Degree Major with University and Completion Year:Do you have an active TS/SCI clearance with CI Polygraph? (Yes/No – provide details):Do you have an active Security+ or IAT II/III certification? (Yes/No – provide details):Total Years of Experience in Cybersecurity / ISSO / RMF roles :Do you have experience working as an ISSO or ISSE ? (Yes/No – provide details):Do you have experience with RMF (Risk Management Framework) ? (Yes/No – explain):Do you have hands-on experience with XACTA tool ? (Yes/No – explain):Do you have experience managing ATO / IATT processes ? (Yes/No – explain):Do you have experience working with Splunk ? (Yes/No – explain):Do you have experience with ICD 503 / NIST 800-53 frameworks ? (Yes/No – explain):Do you have experience creating and maintaining SSPs, POA&Ms, SAPs, and security documentation ? (Yes/No – explain):Do you have experience leading or supporting cybersecurity initiatives/programs ? (Yes/No – explain):Do you have experience working with ISSMs, ISSEs, AOs, and system owners ? (Yes/No – explain):Do you have experience collaborating with developers, DBAs, and engineering teams ? (Yes/No – explain):Motivation / Reason for interest in this position:Why is the candidate seeking a new opportunity?Contact DetailsContact Number:Email ID:LinkedIn Profile URL:Full Address (City, State):Availability & CompensationNotice Period (in weeks):Expected Salary:Work Authorization?Are you ready to relocate on your own expenses and work onsite in Annapolis, MD / Reston, VA / Washington, DC (SCIF environment)? (Yes/No):