Senior Information Systems Security Officer

Data Intelligence, LLC is seeking a part-time skilled Information Systems Security Officer (ISSO) to support a top-tier federal client engaged in national security and counterterrorism operations. This 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 position is part-time and is for 8 hours per week. The work location is fully on-site in Vienna, VA.

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 professional experience serving as an Information Systems Security Officer (ISSO) or in a closely related cybersecurity role.
• Experience supporting systems within a 24/7 operational environment.
• Strong understanding of systems security requirements, cybersecurity policies, and federal information security practices.
• Hands-on experience supporting cybersecurity incident response, investigation, and management.
• Familiarity with recognized cybersecurity frameworks and standards, including NIST, ISO 27001, and CIS Controls.
• Experience using threat monitoring and security event management platforms.
• Working knowledge of cybersecurity technologies and tools, including firewalls, IDS/IPS solutions, and SIEM platforms.
• Understanding of network protocols, network architecture, and associated security considerations.
• Knowledge of data encryption methods and cryptographic key management practices.
• Experience supporting compliance with FISMA and related federal cybersecurity requirements.
• Working knowledge of Windows and Linux operating systems and their associated security features and controls.
• Experience developing, implementing, or maintaining internal security policies, agency standards, and cybersecurity procedures.
• Proficiency with cybersecurity risk assessment, risk analysis, and risk management methodologies.
• Hands-on experience configuring, administering, or managing cybersecurity tools and security 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.