Information System Security Officer
Confidential
Posted: March 13, 2026
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Quick Summary
We are seeking a highly motivated and detail-oriented Information System Security Officer to join our team in Oklahoma City.
Required Skills
Job Description
At PLEXSYS, our teams design, build and deliver Live, Virtual, and Constructive (LVC) innovation and training solutions to customers around the world. With over 200 employees in seventeen states and four foreign countries, we contribute our success to enabling better training…everyday…across the globe.
As an employee of PLEXSYS, you’ll find a culture that empowers you to achieve your professional objectives, give your personal best, and work with other highly passionate individuals. Our core values of integrity, excellence, teamwork and agility drive our daily decisions, identify our focus areas, and inspire our organizational culture.
GENERAL DESCRIPTION
The Information System Security Officer (ISSO) will provide cybersecurity support to the Control and Reporting Center Next Generation Training (CRC NGT) System and the Airborne Warning and Control Systems (AWACS) trainer.
The ISSO is responsible for ensuring the appropriate operational security posture for information systems and must have detailed knowledge and expertise required to manage the security aspects of an information system. Responsibilities include implementation of the requirements of the Joint Special Access Program (SAP) Implementation Guide (JSIG), Risk Management Framework (RMF), and other security requirements as assigned. Duties also include physical and environmental protection, personnel security, and incident handling. Coordinate and synchronize security policy guidance with PLEXSYS Facility Security Officer and Information System Security Manager (ISSM) and work in close collaboration with Partner/Government ISSO/ISSM.
Duties & Responsibilities
Execute on-site information system security program to include implementation and validation of automated informational security, ensuring security requirements are satisfied for training systems
Establish and implement security procedures and practices in support of Corporate goals and current DoD Regulations
Develop, implement and maintain security emergency action plans
Provide security education and training to local employees
Maintain administrative security records and documents for local employees
Conduct self-inspections to ensure current security measures and policies are effective
Conduct random security inspections to ensure regulations and procedures are being adhered to by local employees
Assist in the development and updating of required Authority to Operate (ATO) artifacts
Conduct system audits in accordance with System Security Plan requirements
May be required to conduct maintenance on the networks, systems, and hardware
May be required to assist in software upgrades on networks, systems, and hardware
Understand and follow NISPOM/ODAA/RMF/ICD/NIST/JSIG classified system accreditation and certification requirements
Other duties as assigned
REQUIREMENTS
Bachelor’s degree in related field or 2 years’ experience in related field
Extensive Training or experience with Windows based Information Systems standards with a working knowledge of Linux operating systems
Specialized computer training in networking and active directory
Experience with security audits for information systems
Strong communication and problem-solving skill
Ability to work in both a Team environment as well as independently
Must be organized and detail orientated
Current DoD 8140 IAT Level II and IAM Level I or higher certification (i.e. Security + or equivalent certification)
Desirable
Experience with DoD Security Regulations and Policies
Experience with Type 1 and/or Type 2 virtualization platforms
Experience managing system security in an enterprise environment
Strong system documentation skills
Experience with Trellix ePO (HBSS), Splunk, and Tenable Security Center/Nessus (ACAS)
AUTHORITY
Must have or be able to obtain and maintain a Top-Secret clearance with approval for SAP and SCI access
PERKS
As a PLEXSYS employee, you can expect certain advantages; such as advancement based on performance, competitive wages, valuable benefits and a great working environment. Our team is committed to ensuring an environment that empowers individuals to realize their full potential by providing opportunities and necessary support to achieve personal and professional goals.
Medical/Vision/Prescription/Dental Benefits
Life, AD&D and Long Term Disability Coverage
Paid Holidays, Military Leave, and Paid Time Off
401k Plan with eligibility from first day of employment
Education reimbursement for job-related courses for full-time employees
PriceClub/COSTCO/Sam's Club annual membership