Senior Specialist, Information Security Systems Engineer 1

L3Harris • Greenville, TX

5d

About The Position

L3Harris Technologies is seeking an Information Systems Security Engineer (ISSE) to join its Sensor Infrastructure team. The role focuses on information security, including vulnerability scanning, compliance frameworks, secure system design, and Authorization to Operate (ATO) documentation. The position is located in Greenville, Texas, and follows a 9/80 schedule: employees work 9 out of every 14 days, totaling 80 hours, with every other Friday off.

Requirements

• Active US Top Secret/SCI security clearance.
• Bachelor’s degree and at least 2 years of relevant experience; alternatively, a graduate degree and 0–2 years of related experience; or, in lieu of a degree, at least 6 years of related experience.
• Active Security+ certification or comparable Department of Defense 8140 certification.

Nice To Haves

• Experience assessing security and privacy controls in embedded systems using NIST 800-53.
• Solid understanding of TCP/IP and routing protocols.
• Knowledge of LAN/WAN networking and security infrastructure, including firewalls, IDS/IPS, IPSec, and VPNs.
• Knowledge of computer/system security topics, including antivirus, authentication, authorization, access control, cryptography, SSO, business continuity planning, and application security.

Responsibilities

• Conduct vulnerability scans on networks, systems, and applications to identify security weaknesses, misconfigurations, and potential threats.
• Support the implementation, testing, and basic operation of security tools, including firewalls, intrusion detection systems, endpoint protection platforms, and software deployment utilities.
• Assist with security assessments by reviewing systems and configurations for compliance with established security policies, standards, and best practices.
• Participate in evaluating security products and technologies and provide input on tools or services that improve network and system security.
• Work with internal teams and stakeholders to communicate findings, document risks, and provide recommendations related to information assurance controls and security requirements.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior