Mid-Level Information System Security Officer (ISSO) with Security Clearance

i3 is seeking a Mid-Level Information System Security Officer (ISSO) to support the Risk Management Framework (RMF) lifecycle for a Software Defined Network (SDN) supporting PAE Fires and Reveille Forge. The selected candidate will perform day-to-day cybersecurity, RMF, vulnerability management, and continuous monitoring activities while coordinating with technical teams, external tenants, and cybersecurity leadership to maintain the system's authorization and security posture. This position is located in Huntsville, AL at Redstone Arsenal. Responsibilities

• Support implementation and sustainment of the DoD Risk Management Framework (RMF) and system Authorization to Operate (ATO).
• Maintain eMASS authorization packages, including ACAS/Nessus results, DISA STIG checklists, security controls, and supporting artifacts.
• Develop, track, and maintain POA&Ms and coordinate remediation of identified vulnerabilities and compliance findings.
• Review applicable USCYBERCOM Cyber Tasking Orders (CTOs), DISA vulnerability notifications, and other cybersecurity directives for system and tenant applicability.
• Coordinate with external tenants and technical teams to communicate cybersecurity requirements, track remediation activities, and validate compliance.
• Support risk assessments for new applications, hardware, system changes, external connections, and architecture enhancements.
• Develop and maintain RMF documentation, including SSPs, RARs, continuous monitoring documentation, and interconnection agreements (ISAs/MOUs).
• Monitor applicable Federal, DoD, and NIST cybersecurity guidance and support implementation of evolving requirements, including Zero Trust and Post-Quantum Cryptography (PQC).
• Support cybersecurity assessments, inspections, configuration management activities, and other continuous monitoring requirements. Qualifications
• Bachelor's degree in a related field; relevant experience may be substituted in lieu of a degree.
• 3–6 years of cybersecurity, ISSO, information assurance, or security analyst experience supporting a DoD RMF environment.
• Current certification or qualification meeting applicable DoD 8140 requirements; Security+ or equivalent preferred.
• Experience maintaining authorization packages and supporting ATO sustainment activities in eMASS.
• Working knowledge of ACAS/Nessus, DISA STIGs, POA&Ms, NIST SP 800-53, DoD RMF, and CNSSI 1253.
• Familiarity with security monitoring/SIEM technologies such as Elastic is preferred.
• Active DoD SECRET security clearance.
• U.S. Citizenship required.
• Strong communication skills and ability to coordinate cybersecurity requirements with technical teams, leadership, and external organizations.

Knowledge/Skills

• Knowledge of office administration and procedures.
• Exceptional judgment capabilities and relationship management skills.
• Excellent communication, teamwork, and client service skills; ability to clearly communicate in discussions and written documents, and to deliver feedback clearly and tactfully.
• Interact with a diverse array of customers and staff in a professional and courteous manner.
• Work independently with accountability for accurate and complete results.
• Be extremely organized and exceptionally detail oriented.
• Work well both independently and in a team environment.
• Be energized by a fast-paced work environment.
• Must be able to communicate with others effectively.
• Analyze information and respond appropriately.
• Manage time wisely and prioritize tasks.
• Provide superior customer service.
• Multi-task in a pleasant manner.
• Work well under pressure.

PHYSICAL DEMANDS

• The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job.
• While performing the duties of this job, the employee is regularly required to talk or hear. The employee frequently is required to stand; walk; handle or feel; and reach with hands and arms.
• The employee is occasionally required to sit; climb or balance; and stoop, kneel, crouch or crawl. The employee must be able to lift and/or move up to 10 pounds and occasionally lift and/or move up to 25 pounds.
• Specific vision abilities required by this job include close vision, distance vision, peripheral vision, depth perception and ability to adjust focus.
• Regular i3 hours are 8:00 a.m.
• 5:00 p.m.

Monday-Friday, however, additional hours may be required on occasion. Regular and punctual attendance is required. About i3 Founded in 2007, Integration Innovation, Inc. (i3) is headquartered in Huntsville, AL, with additional offices in Orlando, FL, and the National Capital Region.

We are a 100% team member-owned mid-tier integrator with over 800 employee-owners, and our culture speaks for itself: we've earned ten Best Places to Work® awards, driven by strong employee engagement, transparent leadership, and a genuine commitment to communication. i3 team members operate at the leading edge of national defense across a broad range of technical disciplines, from systems and software engineering to modeling, simulation, and training solutions to cybersecurity, digital engineering, and enterprise IT.

We also take products from prototype through production, bringing that same engineering rigor to manufacturing and delivering hardware at scale. For candidates, that means a rare opportunity: the innovation and mission focus of an engineering services company paired with the hands-on impact of building and delivering real solutions that benefit the Warfighter, all inside an employee-owned company where your contributions directly shape both the mission and your ownership stake in the business.