Job Title: ISSO III
Work Location: Tysons, VA (SCIF - Onsite)
Clearance Required: TS/SCI
Alpha Omega is looking for a Senior Information System Security Officer (ISSO) to join our team to support one of our government customers. 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, collaborate within and across teams, and be able to solve practical problems as well as exercise sound judgement with regards to sensitive and confidential information.
Key Responsibilities:
We are seeking an experienced Information Systems Security Officer (ISSO) to join our team and support the Cyber ISSM in executing security program tasks and day-to-day operations. The ideal candidate will have strong technical expertise and the ability to provide IT security management and hands-on security support across various IT operating and development environments. The ISSO will be responsible for developing and maintaining critical security documentation, writing policies, and building Standard Operating Procedures (SOPs) to ensure system authorization in line with organizational and regulatory standards.
• Collaborate with the Cyber ISSM to execute security program tasks, ensuring compliance with organizational policies and industry regulations.
• Develop, maintain, and update security policies, Standard Operating Procedures (SOPs), and system security plans (SSPs) to support the authorization of IT systems.
• Perform security assessments and compliance evaluations, ensuring systems adhere to established security policies and procedures.
• Work closely with Information System Security Officers (ISSOs) and other stakeholders to define and prioritize system alerts and notifications.
• Conduct security impact assessments for system/functional Change Requests (CRs) within the System Development Lifecycle (SDLC).
• Perform access control reviews for privileged accounts, developing detailed Account Review Summaries.
• Prepare and review Interconnection Security Agreements and Memoranda of Agreement, ensuring compliance with approval processes.
• Conduct risk assessments and data sensitivity analysis, recommending system enhancements to maintain security posture.
• Conduct compliance and vulnerability assessments, prepare executive summaries, and provide remediation recommendations.
• Develop and execute annual security continuous monitoring test plans, testing security controls, and coordinating with stakeholders.
Required Qualifications: None
Required Skills:
• Highly responsive to customer needs.
• 5+ years of experience.
• Strong communications and collaboration skills
Desired Skills:
• Experience supporting systems hosted in Cloud environments.
• Experience supporting systems in Agile and DevOps environments
Required Certification(s): (Must have one certification)
• Certified Information Systems Security Professional (CISSP)
• Certified Information Security Manager (CISM)
• Certified Information Systems Auditor (CISA)
Travel Required:
• Travel Required (list percentage and location): 0-10% = 0
• Onsight Tysons, VA (SCIF)
Salary and Benefit Information:
The likely salary range for this position is $90,000- $120,000. 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: May 15, 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:
• PTO including paid parental, military, and bereavement leave
• Eleven (11) paid Federal holidays, five of which are floating holidays (as designated by the company's holiday schedule each year)
• Health and Dental Insurance (including 100% employer paid premiums for employee coverage under the HDHP health plan)
• Life Insurance, STD/LTD term disability coverage, with employer paid premiums
• 401 (k) plan with a match that is 100% vested after you complete two years of service
• FSA/DFSA/HSA flexible benefit plans
• Annual Tuition & Professional Development Reimbursement benefit
We regularly review our Total Rewards package to ensu