Data Intelligence, LLC is seeking a skilled Senior 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.
This is an on-site position in Vienna, VA. It requires a current, active TS/SCI w/poly clearance.Key Responsibilities:
- Implement, maintain, and enforce information systems security requirements, policies, standards, and procedures.
- Monitor system security posture, identify potential threats, and coordinate incident response and remediation activities.
- Conduct security risk assessments, vulnerability assessments, and system scans to identify and address potential security weaknesses.
- Configure, manage, and maintain cybersecurity tools and technologies, including firewalls, intrusion detection/prevention systems (IDS/IPS), and security information and event management (SIEM) platforms.
- Analyze security monitoring data, system logs, and vulnerability scan results to identify risks and recommend corrective actions.
- Support compliance with federal cybersecurity requirements, including the Federal Information Security Modernization Act (FISMA).
- Apply established security frameworks and standards, including NIST, ISO 27001, and CIS Controls.
- Develop, implement, and maintain internal security policies, agency standards, and operating procedures.
- Evaluate network architecture, communication protocols, and system configurations to identify security risks.
- Assess encryption technologies, key management practices, and data protection controls.
- Evaluate and strengthen security configurations across Windows and Linux operating systems.
- Collaborate with technical teams and stakeholders to address security findings, implement safeguards, and support continuous security improvement.
Required Experience:
- 5+ years experience in an ISSO capacity.
- Demonstrated expertise in systems security requirements and policy.
- Strong incident response and management experience
- Demonstrated experience with, and knowledge of, security frameworks and standards such as NIST, ISO 27001, and CIS Controls.
- Extensive use of threat monitoring platforms.
- Experienced with, and knowledgeable of, security technologies, tools, and methodologies (e.g. firewalls, IDS/IPS, SIEM systems).
- Can demonstrate experience with network protocols and architecture.
- Heavy experience with data encryption techniques and key management practices.
- Proficiency with compliance requirements (FISMA).
- Ability to work with operating systems (e.g. Windows and Linux) and their security features.
- Experience conducting and analyzing system scans.
- Hands-on with designing and implementing security internal policies, agency standards, and procedures.
- Proficiency with risk assessment and management techniques.
- Experienced configuring and managing security tools and systems.
Required Certifications (One or more):
- Certifications (C)ISSO, CISA, CISM, CISSP.
Security Clearance:
- Top Secret / SCI with CI Polygraph
