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# Senior Information Systems Security Officer

- **Company:** Data Inc
- **Location:** Vienna, VA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Cyber Security, System Configuration, Linux, Data Intelligence, Intrusion Detection Systems, Key Management, Network Protocols, Security Information and Event Management, Firewalls (Computer Science), Information Technology, Cybercrime
- **Published:** August 14, 2026
- **Apply:** https://www.clearancejobs.com/jobs/8784020/senior-information-systems-security-officer

## About the Role

* 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

## Description

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., * 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.


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