Senior Specialist, Information Security Systems Engineer 1

L3Harris Technologies; 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 is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers' mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

L3Harris is the Trusted Disruptor in defense tech. With customers' mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Job Title: Senior Associate, Information Security Systems Engineer (ISSE)

Job Code: 44711

Job Location: Greenville, TX

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

Job Description:

L3Harris Technologies is seeking an Information Systems Security Engineer (ISSE) to join our Sensor Infrastructure team. The ideal candidate is a go-getter with comprehensive knowledge of information security principles and practices, bringing deep expertise in vulnerability scanning, compliance frameworks, secure system design and Authorization to Operate (ATO) documentation.

Essential Functions:

• 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 such as 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.

Qualifications:

• Active US Top Secret/SCI security clearance.
• Bachelor's Degree and minimum 2 years of prior relevant experience.
• Graduate Degree and a minimum of 0 - 2 years of prior related experience.
• In lieu of a degree, a minimum of 6 years of prior related experience.
• Active Security+ certification or comparable Department of Defense 8140 certification.

Preferred Additional Skills

• 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 (Firewalls, IDS/IPS, IPSec, VPNs).
• Knowledge of Computer/System Security topics such as Antivirus, Authentication, Authorization, Access Control, Cryptography, SSO, Business Continuity Planning and Application Security.

#LI-AM2

L3Harris Technologies is proud to be an Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law.

Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. 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.

By submitting your resume for this position, you understand and agree that L3Harris Technologies may share your resume, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions.

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