Information System Security Officer (ISSO)

Description

Job Title : Information System Security Officer (ISSO)

Clearance Required : DHS Public Trust EOD, US Citizen (Secret or above preferred)

Work Location : Hybrid; Onsite 2 days a week in Arlington, VA (applicant must be based within a commutable distance (1-2 hours) from Arlington, VA)

Alpha Omega is searching for an Information System Security Officer (ISSO) III to support a government customer. The primary responsibilities for the position are to support all activities that ensure the level of security documented with the security authorization is maintained at an acceptable level of risk. The nature of the work requires that the candidate demonstrates initiative, organization, responsibility, customer service skills, and the ability to be flexible and adaptive to a fast-paced, fluid business environment. The candidate must be able to communicate effectively and decisively with all levels of the organization and be able to solve practical problems as well as exercise sound judgement with regards to sensitive and confidential information.

Key Responsibilities :

• Proactively create, monitor and update the status of POA&Ms to ensure weaknesses are resolved in accordance with their scheduled completion dates.
• Create of Waivers or Risk Acceptance Memos to assist in the effective management of system risks.
• Conduct an annual assessment in accordance with guidance in the DHS Information Security Performance Plan.
• Review and update security authorization documents as needed, but at least annually
• Conduct Contingency Plan tests at least annually and update the plan.
• Perform system self-assessments as part of the customer's Ongoing Authorization program.
• Monitor and respond to Information Security Vulnerability Management (ISVM) / Patch Management.
• Provide audit support for assigned systems (Financial, A-123, FISMA, internal, DHS, etc.), throughout the audit (Pre, During, and Post Audit).
• Maintain knowledge of inventory in accreditation boundary.
• Devise a plan to certify and accredit their assigned Information system or information systems.
• Respond to emerging requirements or policies as set by legislation, regulation or policy.
• Participate in DevOps Sec (security integrated into Agile processes) requirements for assigned systems.
• Support the review and update security authorization documents as needed, but at least annually
• Help coordinate with Privacy, Records, and Information Governance Divisions related to compliance documentation and other requirements.
• Provide audit support for assigned systems (Financial, A-123, FISMA, internal, DHS, etc.), throughout the audit (Pre, During, and Post Audit).
• Proactively ensure security requirements are included in the development cycle (Waterfall, Agile, SecDevOPs).
• Use DHS' and mandated enterprise IA Compliance Tools.
• Ensure CM processes are followed to ensure that any changes do not introduce new security risks.
• Support the management system Information Security Vulnerability Management (ISVM) Compliance.
• Experience leading a team of ISSOs

Required Qualifications :

Education :

Experience / Skills :

Certification(s) :

Certification(s) (at least one (1) of the following) :

Salary and Benefit Information :

The likely salary range for this position is $90,250 - $130,000. This is not, however, a guarantee of compensation or salary. There are multiple factors that are considered in determining final pay for a position, including, but not limited to, relevant work experience, skills, certifications and competencies that align to the specified role, education and certifications as well as contract provisions regarding labor categories that are specific to the position and could fall outside of this range.

Application Deadline : January 7, 2026

Joining the Alpha Omega team entitles you to participate in all retirement benefits, plans of deferred compensation, health and insurance benefits, and other such benefits as set forth in the company's policy and benefits manuals. See below, to name a few :

We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.

Culture and Values :

Guided by our core values-Harmony, Engagement, Accountability, Resourcefulness, and Tenacity (HEART)- we foster a culture of innovation, collaboration, and continuous learning and are committed to delivering high-impact solutions. We recognize and reward hard work.

Through our H.E.A.R.T. Awards Program, colleagues and managers can recognize each other for actions that exemplify these values. Recognized employees receive a detailed nomination highlighting their contributions, which is shared with their manager. Each quarter, select nominees have the opportunity to receive a monetary bonus as an extra thank-you for their impact.

Our Company :

Alpha Omega is an award-winning Federal IT solutions provider dedicated to delivering mission-enabling technology and strategic solutions across the National Security, Federal Financial, Healthcare, and Space & Science domains. Since our founding in 2016, we have grown to over 800 employees nationwide with $230m in revenue. With the January 2025 acquisitions of SeKON and Macro Solutions, we have expanded our capabilities to further support our customers in digital modernization, artificial intelligence, and cybersecurity.

We are committed to supporting our agency partners as they transform their operations, delivering on our purpose to ensure the safety, security, and well-being of future generations :

Through strategic partnerships, intellectual property, and relentless drive for innovation, Alpha Omega is shaping the future of government technology. We are proud to be a Virginia Best Places to Work 8 times, an Inc. 5000 honoree 7 times, and a Washington Post Top Workplaces 4 times. Join us in driving transformation that secures the nation's future.

Alpha Omega Integration, LLC (Alpha Omega) 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, disability, or veteran status, or any other protected class.

Equal Opportunity Employer / Protected Veterans / Individuals with Disabilities

This employer is required to notify all applicants of their rights pursuant to federal employment laws.

For further information, please review the Know Your Rights notice from the Department of Labor.