Senior Information Security Systems Engineer (ISSE)

L3Harris Technologies, Inc.; Greenville (TX); On-site; USD 90,000 - 130,000; Full time

Job summary

L3Harris Technologies, Inc. is seeking a Senior Associate, Information Security Systems Engineer (ISSE) to join the Sensor Infrastructure team in Greenville, TX.

The role focuses on identification and remediation of security gaps across networks, systems, and applications. The ISSE will perform vulnerability assessments, assist with compliance mappings, and help prepare Authorization to Operate (ATO) documentation while collaborating with internal teams to communicate risks and mitigation

Qualifications

• Active security clearance with TS/SCI eligibility.
• Bachelor's degree with minimum 2 years of relevant experience.
• Graduate degree with 0–2 years of relevant experience or 6+ years in lieu of degree.

Responsibilities

• Conduct vulnerability scans of networks, systems, and applications.
• Support security tools like firewalls, IDS/IPS, and endpoint protection.
• Review configurations for compliance with policies and standards.
• Evaluate security products and technologies and provide input.
• Communicate findings and risks to stakeholders and document controls.

Skills

Top Secret/SCI clearance

Vulnerability assessment

NIST 800-53

Education

Bachelor's Degree

Graduate Degree

6+ years experience in lieu of degree

Tools

Security+ (DoD 8140)

Job description

L3Harris Technologies, Inc. is seeking a Senior Associate, Information Security Systems Engineer (ISSE) to join the Sensor Infrastructure team in Greenville, TX.

The role focuses on identification and remediation of security gaps across networks, systems, and applications. The ISSE will perform vulnerability assessments, assist with compliance mappings, and help prepare Authorization to Operate (ATO) documentation while collaborating with internal teams to communicate risks and mitigation