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Senior ISSO (TS)

Agile Defense, LLC
United States, D.C., Washington
Jul 18, 2026
About Agile Defense


At Agile Defense we know that action defines the outcome and new challenges require new solutions. That's why we always look to the future and embrace change with an unmovable spirit and the courage to build for what comes next.


Our vision is to bring adaptive innovation to support our nation's most important missions through the seamless integration of advanced technologies, elite minds, and unparalleled agility-leveraging a foundation of speed, flexibility, and ingenuity to strengthen and protect our nation's vital interests.
Requisition #:
Job Title: Senior ISSO
Location: Onsite, Washington, DC
Clearance: Top Secret

Description

The Senior ISSO plays a critical role in ensuring the confidentiality, integrity, and availability of sensitive information and systems within government agencies. This position involves designing, implementing, and managing robust security solutions to safeguard digital assets and mitigate cyber threats. The ISSO collaborates closely with various teams, including IT professionals, security analysts, and management, to uphold the highest standards of cybersecurity in alignment with government regulations and industry best practices.Essential Functions



  1. Provide support for the development of policies, standards, instructions, procedures, strategies, and communications relative to the customer's mission.


    1. Provide services in accordance with NIST 800-37, NIST 800-53, FISMA of 2014, and organization-level policies, directives, and guidelines.


  2. Security Infrastructure Design and Implementation:


    1. Design and deploy comprehensive security measures to protect information systems, networks, and applications.
    2. Develop and implement security architectures, policies, standards, and procedures that align with federal regulations and guidelines.


  3. Assessment Support:


    1. Conduct regular assessments and audits to identify potential vulnerabilities and security gaps in systems and applications.
    2. Ensure compliance with federal regulations, standards, and guidelines, such as NIST, FISMA, and FedRAMP.
    3. Collaborate with relevant teams to prioritize and address identified vulnerabilities in a timely manner.


  4. Incident Response and Reporting:


    1. Participate in incident response activities to effectively handle and mitigate security incidents and breaches.
    2. Contribute to the development and testing of incident response plans and playbooks.


  5. Continuous Monitoring:


    1. Utilize security tools and technologies to monitor network traffic, detect anomalies, and investigate potential security incidents to ensure continuous secure operations.
    2. Analyze security logs, reports, and data to identify patterns and trends indicative of unauthorized activities.
    3. Support internal and external audits related to information security and assist in remediation efforts.


  6. Plan of Action and Milestones (POA&M) Management:


    1. Create, manage, and report on POA&Ms for customer information systems.



Qualifications

  • US Citizen with Public Trust.
  • Bachelor's degree in Computer Science, Information Technology, or a related field plus 10 years related experience.
  • Relevant industry certifications such as CISSP, CISM, CISA, CompTIA Security+, or GIAC certifications.
  • Proven experience in information security engineering, preferably in a Federal Government Agency or regulated environment.
  • Strong understanding of cybersecurity frameworks, standards, and regulations (NIST, FISMA, etc.).
  • Knowledge of security technologies, including firewalls, intrusion detection/prevention systems, SIEM, encryption, and authentication protocols.
  • Excellent problem-solving skills and the ability to think critically in high-pressure situations.
  • Strong interpersonal skills and the ability to work effectively in cross-functional teams.
  • Exceptional communication skills, both written and verbal.

Our Core Values


Employees of Agile Defense are our number one priority, and the importance we place on our culture here is fundamental. Our culture is alive and evolving, but it always stays true to its roots. Here, you are valued as a family member, and we believe that we can accomplish great things together. Agile Defense has been highly successful in the past few years due to our employees and the culture we create together.


What makes us Agile? We call it the 6Hs, the values that define our culture and guide everything we do. Together, these values infuse vibrancy, integrity, and a tireless work ethic into advancing the most important national security and critical civilian missions. It's how we show up every day. It's who we are.



  • Happy - Be Infectious. Happiness multiplies and creates a positive and connected environment where motivation and satisfaction have an outsized effect on everything we do.
  • Helpful - Be Supportive. Being helpful is the foundation of teamwork, resulting in a supportive atmosphere where collaboration flourishes, and collective success is celebrated.
  • Honest - Be Trustworthy. Honesty serves as our compass, ensuring transparent communication and ethical conduct, essential to who we are and the complex domains we support.
  • Humble - Be Grounded. Success is not achieved alone, humility ensures a culture of mutual respect, encouraging open communication, and a willingness to learn from one another and take on any task.
  • Hungry - Be Eager. Our hunger for excellence drives an insatiable appetite for innovation and continuous improvement, propelling us forward in the face of new and unprecedented challenges.
  • Hustle - Be Driven. Hustle is reflected in our relentless work ethic, where we are each committed to going above and beyond to advance the mission and achieve success.



Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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