Information Systems Security Officer

Country/RegionUSLocationOrlando, FL, US, 32819 July 24, 2026

Job Title: Information Systems Security Officer

Job Code: 41555

Job Location: Orlando, Florida

Job Schedule: 9/80 - work 9 out of every 14 days – totaling 80 hours worked and have every other Friday off 

 

Job Description:

L3Harris is looking for an Information Systems Security Officer (ISSO) for Department of Defense networks and IT systems.  The selected individual will perform technical security control assessments and baseline validations to identify vulnerabilities and control deficiencies as part of a continuous monitoring program. Will conduct System Administration (Linux/Windows) and Cybersecurity sustainment activities (hardware/software change management, account management, auditing, media protection, file transfers, etc.). In addition, will perform system self-inspections, audit log reviews, secure baselines, and continuous monitoring tasks. Executes DoD compliant cybersecurity policies and procedures for primary customer base.

 

Essential Functions:

  • Perform technical security control assessments and baseline validations to identify vulnerabilities and control deficiencies as part of a continuous monitoring program
  • System Administration (Linux/Windows) and Cybersecurity sustainment activities (hardware/software change management, account management, auditing, media protection, file transfers, etc.)
  • Perform system self-inspections, audit log reviews, secure baselines, and continuous monitoring
  • Conduct actions related to cyber incident response, investigation, and resolution
  • Develop, maintain, and execute DoD compliant cybersecurity policies and procedures for primary customer base 

 

Qualifications:

  • Bachelor’s Degree and minimum 6 years of prior cybersecurity or cyber intelligence experience. Graduate Degree and a minimum of 4 years of prior cybersecurity or cyber intelligence experience. In lieu of a degree, minimum of 10 years of prior cybersecurity or cyber intelligence experience
  • Active DoD Secret Clearance

 

Preferred Additional Skills:

  • 1+ year of experience working with assessment & authorization processes to include Risk Management Framework (RMF), DIACAP, NISPOM
  • Prior ISSO experience
  • DoD 8570.1 compliant certification (e.g. Security +, CISSP, etc.)or ability to attain within 6 months
  • Communications security (COMSEC) experience
  • Knowledge of NISPOM Chapter 8 and DAAPM requirements
  • System administrator experience with operating systems: Microsoft Windows, Linux
  • Experience with various information system security assessment/hardening tools - SCAP Compliance Checker, ACAS, Nessus
  • Working knowledge of WAN/LAN, to include Cisco-based routers, switches, and firewalls
  • Experience with NIST 800-53 implementation
  • Prior Enterprise Mission Assurance Support Service (eMASS)
  • Self-starter with ability to work independently
  • Customer service orientation

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