Senior Information Systems Security Officer

Data Intelligence, LLC is seeking a skilled Information Systems Security Officer (ISSO) to support a top-tier federal client engaged in national security and counterterrorism operations. This full-time position, based in Vienna, VA, plays a critical role in securing complex IT systems in a high-visibility, mission-driven environment.

The selected candidate will work closely with government and contractor stakeholders to ensure compliance, manage risk, and defend against evolving cyber threats.

Key Responsibilities

Support system security planning, implementation, management, and maintenance in accordance with federal cybersecurity standards and requirements. Ensure compliance with agency security policies, FISMA, and other applicable regulations. Monitor and manage security controls and respond to cybersecurity incidents and events.

Conduct system risk assessments and develop appropriate mitigation strategies. Maintain and update system security plans (SSPs), POA&Ms, and other security documentation. Coordinate with stakeholders on A&A activities and provide continuous monitoring of system security postures. Required Experience: Minimum of five (5) years of ISSO experience Demonstrated working in a 24/7 operational environment Demonstrated expertise in systems security requirements and policy Demonstrated expertise in incident response and management Demonstrated experience and knowledge with security frameworks and standards such as NIST, ISO 27001, and CIS Control Demonstrated expertise in the use of threat monitoring platforms Demonstrated experience and knowledge of security technologies, tools, and methodologies (e.

g., firewalls, IDS/IPS, SIEM systems) Demonstrated experience and knowledge with network protocols and architecture Demonstrated experience and knowledge with data encryption techniques and key management practices Demonstrated experience and knowledge with compliance requirements (FISMA) Demonstrated experience and knowledge with operating systems (e.

g., Windows and Linux) and their security features Demonstrated experience and knowledge with designing and implementing internal security policies, agency standards, and procedures Demonstrated experience and knowledge with risk assessment and management techniques Demonstrated experience and knowledge with configuring and managing security tools and systems Required Certifications (One or more): CISSP CISSO CISM CISA Security Clearance: Top Secret / SCI with CI Polygraph Why Join Data Intelligence, LLC: Join a mission-driven team where your cybersecurity expertise directly supports U.

S. national security. At Data Intelligence, LLC, we offer competitive compensation, a collaborative culture, and the opportunity to work alongside top talent in support of our country’s most critical operations. Data Intelligence, LLC is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.