Information System Security Officer - ISSO 3
L3HARRIS Technologies
Waco, TX · Posted November 5, 2026
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November 2026
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About the job
Job Title: Information System Security Officer - ISSO 3 Job Code: 46672 Job Location: Waco, TX Job Schedule: 9/80: Employees work 9 out of every 14 days – totaling 80 hours worked – and have every other Friday off
Job Description:
L3Harris Waco, TX is seeking an Information System Security Officer (ISSO) in support of Department of War and National programs. Duties for successful candidates primarily include, but are not limited to, maintenance of information system security documentation and records, performing system and network self-inspections and audits, and supporting media control and integrity. The ISSO will interact with internal and external customers when changes occur that may affect system authorization and compliance, assist the Information System Security Manager (ISSM) in policy creation and updates, and provide assistance on information system security issues that may affect the mission of the customer. L3Harris is proud to offer competitive wages, benefits, and relocation packages.
Essential Functions:
This position requires a TS/SCI with SCI eligibility security clearance.
Responsible for the development, deployment and execution of controls and defenses to ensure the security of company technology, information systems, and system deliverables.
Supports secure systems operations and maintenance.
Assesses and mitigates system security threats and risks throughout the program life cycle.
Performs system certification and accreditation planning, testing, and validation activities in coordination with government customers.
Executes first level responses and addresses reported or detected incidents.
Interprets, analyzes, and reports all events and anomalies in accordance with directives, to include initiating, responding, and reporting discovered events.
Safeguards information against unauthorized use, infiltration, exfiltration, modification, destruction or disclosure of national security information.
Notify the ISSM of changes affecting the ATO. Coordinate any changes to hardware, software, or firmware with the ISSM prior to any change.
Building Aircraft disk pack sets, along with keeping them maintained and updated, as necessary to support our test team, and the Air Force as required.
Willing to Travel 25% of the time to support offsite test events
Frequently supports night, and/or weekends to augment SCIF manning for planned site power outages and/or network outages that will affect our security posture. Supports test events and customer needs as required.
Responsible for analyzing and/or administering security controls for information systems as part of the systems’ Continuous Monitoring Plan
Follow approved procedures for clearing, sanitizing and destroying hardware and media.
Implements, enforces, communicates and develops security policies or plans for data, software applications, hardware, and telecommunications
Provides details and artifacts for developing Information System Security (ISS) Risk Management Framework (RMF) documentation (SSP, SAR, RAR, SAP, SCTM, POA&M, etc.) to support the Assessment & Authorization (A&A) of assigned systems
Performs periodic hardware/software inventories to maintain strict control over assigned assets
Identifies system security controls shortcomings and annotates POA&M entries for deficient items, playing a vital role with remediating control deficiencies
Frequently works with other team members to attain and keep Two-Person Integrity (TPI) when working with open removable media
Qualifications:
Bachelor’s Degree and minimum 4 years of prior relevant experience. Graduate Degree and a minimum of 2 years of prior related experience. In lieu of a degree, minimum of 8 years of prior related experience.
Minimum Security+ certification required
In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information.
Preferred Additional Skills
Experience with various information system security assessment/hardening tools - SCAP Compliance Checker, ACAS, Nessus
Prior Xacta 360 /Xacta.io training, knowledge, and relevant experience
Working knowledge of WAN/LANs, to include routers, switches, and firewalls
Self-starter who works well with others in support of achieving team goals
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