Information Systems Security Officer Jobs in Washington, DC
Information Systems Security Officer jobs in Washington, District of Columbia are in strong, consistent demand, concentrated in the Capitol Hill, Foggy Bottom, and NoMa corridors across federal defense, intelligence, and civilian agency contracting. Employers hiring right now include tharros, General Dynamics Information Technology, and MTSI. Scan the live roles below and apply to whichever ones fit.
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Tharros is seeking a Senior Information Systems Security Officer to support a DHS Intelligence and Analysis cybersecurity program in the National Capital Region.
This role will support ISSO operations across a complex Federal cybersecurity environment, including Assessment and Authorization, continuous monitoring, ATO package maintenance, POA&M management, security artifact quality, cloud and hybrid system support, and cybersecurity compliance. The ideal candidate is a hands-on ISSO who can maintain accurate authorization evidence, coordinate with technical teams, and help keep mission systems secure, compliant, and authorization-ready.
Responsibilities:
- Perform ISSO duties for assigned Federal information systems.
- Support RMF activities, including system categorization, control implementation support, assessment readiness, authorization package maintenance, and ongoing monitoring.
- Develop, review, validate, and maintain security artifacts such as SSPs, POA&Ms, risk exceptions, contingency plans, privileged user documentation, and privacy-related artifacts.
- Create, maintain, and monitor ATO packages in GRC tools.
- Support POA&M development, validation, remediation tracking, exception documentation, closure, and reporting.
- Collaborate with system owners, ISSOs, ISSMs, developers, engineers, assessors, and other stakeholders to address vulnerabilities, security findings, and remediation actions.
- Review vulnerability scan results and support recurring continuous monitoring activities.
- Support audit log review, alert response, and documentation of follow-up actions.
- Ensure assigned systems remain aligned with applicable cybersecurity policies, procedures, and decommissioning requirements.
- Support quarterly cybersecurity performance and compliance reporting.
- Provide ISSO support across hybrid environments, including classified and unclassified on-premise systems, cloud-based systems, DevSecOps environments, and agile development teams.
- Support security for operating systems and technologies including Linux, Windows, open-source operating systems, and cloud platforms.
- Support Cross Domain Solution security governance, assessment, and authorization activities.
- Help improve ISSO workflows, evidence management, POA&M tracking, continuous monitoring, and risk reporting through automation and repeatable processes.
- Translate compliance status, vulnerability data, and remediation progress into clear updates for technical and leadership stakeholders.
Requirements:
- Active Top Secret clearance with contingency on DOD CAS granting SCI eligibility.
- 10+ years of related cybersecurity experience.
- At least 2 years of recent experience in A&A, FISMA compliance, IC cybersecurity policy and standards, continuous monitoring, CDS, and secure cloud and hybrid engineering.
- Experience applying NIST 800 series, CNSSI 1253, security controls, and RMF principles.
- Experience with emerging security risk management practices, including automation of A&A and continuous monitoring activities.
- CISM, CAP, or GRC certification, or comparable demonstrable experience.
- Experience developing, reviewing, or maintaining SSPs, POA&Ms, risk exceptions, contingency plans, privileged user documentation, ATO packages, and continuous monitoring evidence.
- Experience working with GRC tools and coordinating with technical teams to remediate vulnerabilities and maintain authorization readiness.
- Strong written and verbal communication skills.
- Ability to work onsite at a Government-approved location as required.
Preferred Qualifications:
- Prior DHS, Intelligence Community, DoD, CISO office, ISSM, AO, SCA, or national security ISSO experience.
- Experience supporting large ISSO portfolios, classified systems, hybrid cloud environments, DevSecOps evidence collection, continuous monitoring, and audit readiness.
- Experience with Archer, eMASS, Xacta, ACAS, Tenable.sc, Splunk, GitLab, Axonius, STIG/SCAP validation, or related Federal cybersecurity tools.
- Experience with AWS, Microsoft Azure, Microsoft 365, or other cloud platforms.
- Experience supporting TS/SCI, SCIF, cross-domain, or secure mission environments.
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Find JobsInformation Systems Security Officer Job Market in Washington
Who's Hiring
Information Systems Security Officer Jobs in Washington: Frequently Asked Questions
How do I get an information systems security officer job in Washington?
Washington's market is dominated by federal agency contractors and defense firms concentrated in areas like Crystal City, the National Mall corridor, and NoMa, so candidates who hold an active security clearance and certifications such as CISSP or Security+ move to the front of the line. Familiarity with NIST frameworks and federal authorization processes is expected here in ways it simply isn't in most other cities.
Which companies hire information systems security officers in Washington?
Companies currently hiring information systems security officers in Washington include tharros, General Dynamics Information Technology, and MTSI, per current listings on Migrate Mate as of November 2026. Washington's hiring base skews heavily toward federal IT contractors, defense primes, and civilian agency support firms rather than purely commercial technology employers.
Are there remote information systems security officer jobs in Washington?
Yes, though remote availability is limited because information systems security officer work often requires on-site access to classified systems or secure government facilities. About 40% of information systems security officer openings tied to Washington are remote or hybrid as of November 2026, and those roles tend to cluster in policy, compliance review, and risk assessment functions rather than hands-on systems administration.
How can I get an information systems security officer job in Washington with little or no experience?
The most realistic entry path in Washington is through junior IT analyst or systems administrator roles at mid-tier federal contractors in areas like Tysons Corner or Rosslyn, where firms regularly train candidates into security functions. Pursuing a CompTIA Security+ certification and volunteering for any security-adjacent responsibilities, such as access control audits, makes a candidate competitive for internal moves into ISSO roles within those same organizations.
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