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Information System Security Officer

Confidential

Oklahoma City, Oklahoma permanent

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.

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

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