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Information Systems Security Officer (ISSO)

Sixgeninc

Washington, DC (Hybrid) Remote permanent

Posted: April 1, 2026

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Job Description

We are seeking an experienced Information Systems Security Officer to join our growing team starting in October 2024.

The Information Systems Security Officer (ISSO) will work with the ISSE as a pivotal team in navigating the complex landscape of DIA’s cybersecurity requirements. The ISSO ensures the project adheres to the DIA’s Risk Management Framework (RMF) and Authority to Operate (ATO) milestones, addressing any vulnerabilities and compliance issues.

This role resides in our Delivery Team and reports to the Project Manager leading the program. This position is located on the customer site in Washington, DC and is remote work eligible up to 60%.

SIXGEN supports cyber and intelligence missions by serving government and commercial organizations as they overcome global cybersecurity challenges. Our highly skilled operators conduct research and assessments based on real-world threats. We simulate adversaries and malicious actors to report details and actionable findings on critical assets and infrastructures. Our program planners advise mission owners to bring rapid solutions to intelligence mission leaders. Using innovative processes, tools, and techniques, we predict and overcome cybersecurity vulnerabilities. Our successes are supported by our diverse team of experienced, technical talent. SIXGEN is growing our support to mission by adding an ambitious Strategic Management Consultant to our team. SIXGEN, Inc. is an Equal Opportunity/Veterans/Disabled Employer.

Core Responsibilities:

• Oversee and ensure the security and compliance of the project in line with customers cybersecurity requirements, focusing on achieving an Authority to Operate (ATO) within the Risk Management Framework (RMF).

• Lead the project's security lifecycle, ensuring compliance with DIA's RMF, Information Assurance standards, and ATO milestones.

• Collaborate with the project team to develop, maintain, and update security documentation, including Systems Security Plans, Risk Management Plans, Security Test Plans, and POA&Ms.

• Coordinate with customer CIO Cyber & Security for security assessments, addressing any findings and implementing required security controls and mitigations.

• Oversee the integration of the project with the customer’s Enterprise Security Services, ensuring encrypted data protection and compliance with PKI and IC PKI standards.

• Conduct weekly reviews of ACAS scan results, remediate identified weaknesses, and ensure routine audit log reviews to detect unauthorized system use.

Required Skills and Experience:

• Expertise in RMF and ATO processes

• Proficiency in DISA STIGs, SRGs, and other hardening guidelines, with experience in the security aspects of cloud-based solutions.

• Strong understanding of customer’s cybersecurity policies and the Intelligence Community's standards for information security.

• Active TS/SCI clearance

Additional Details

• Job Location: On the customer site in Washington, DC/Hybrid up to 60%

• Clearance Requirement: Active TS/SCI clearance

• Travel: Yes. Travel to the office will be required for meetings and collaboration. Estimated 10% or more

• Certification Requirement: Security + or CISSP

Compensation & Benefits

• Competitive salary

• Employer-paid health insurance premiums (medical, dental, vision)

• Employer-paid short/long term disability insurance and basic life/AD&D insurance

• 401K with a 4% employer contribution

• Professional development reimbursement options available (training, certification, education, etc)​

• Flexible and remote work policies for most positions

• Paid Time Off (PTO) at a rate of three (3) weeks plus one (1) day per year of service up to four (4) weeks annually

• 11 paid holidays per calendar year​

We are committed to fostering an inclusive culture that values diversity in our people, reflecting the communities we serve and our customer base. We strive to attract and retain a diverse talent pool and create an environment where everyone is empowered to be their authentic selves at work.

SIXGEN is an Equal Opportunity Employer. We ensure that all applicants are considered for employment without regard to race, color, religion, sexual orientation, gender identity, national origin, disability, age, marital status, ancestry, projected veteran status, or any other protected group or class.

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