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Senior Manager, Information Security Systems Engineer

Greenville, Texas
Full Time On-site

L3Harris is seeking an Information Security Systems Engineering Manager to lead a team in developing and implementing secure systems. This role focuses on ensuring the security of information systems, networks, and data throughout the lifecycle of major weapon systems. Key responsibilities include leading security engineering activities, developing and implementing security solutions, and ensuring compliance with relevant standards and regulations. Works closely with Government customers, program managers, and chief engineers to ensure that the security protection needs, concerns and requirements are defined and implemented with appropriate fidelity and rigor, early and in a sustainable manner throughout the life cycle of system that results in obtaining and maintaining security authorizations.

Essential Functions:

  • Communicates within and outside of the organization to influence leadership to accept new practices, approaches, and concepts.
  • Track all assigned systems for A&A (Assessment and Authorization) status and oversee accreditation/re-accreditation actions.
  • Responsible for improving upon existing processes or establishing new processes and systems.
  • Forecast Systems Engineering Manpower needs based on Program and Potential demand forecast.
  • Establish training requirements for continued professional development of the team to meet business goals.
  • Responsible for creating workforce and staffing plans.
  • Active Secret clearance with the ability to obtain/maintain TS/SCI.
  • Work is 100% on-site and cannot be accomplished remotely.

Qualifications:

  • Bachelor’s Degree in an appropriate engineering discipline (Electrical, Mechanical, Systems, Software, Physics, etc.) and minimum 12 years of prior relevant experience.
  • Graduate Degree and a minimum of 10 years of prior relevant experience. 
  • In lieu of a degree, a minimum of 16 years of relevant prior experience.
  • Demonstrated systems engineering understanding to include requirements management, implementation, integration, and test.
  • Demonstrated technical understanding of server-class computer systems and networking such as those commonly found in data centers.
  • Demonstrated experience leading security engineering teams with responsibilities for security control implementation, documentation, and continuous monitoring.
  • Demonstrated ability to work with US Government approving authorities to obtain Authorities to Operate (ATOs) based on Risk Management Framework and NIST 800-53 controls.
  • Demonstrated experience establishing guidance, accountability, and best practices both within the team and across the larger program organization to embed cybersecurity within all phases of product development.
  • Demonstrated experience building effective relationships with key stakeholders across product teams, chief engineers, project engineers, program managers, and customer community.

Preferred Additional Skills:

  • In-depth understanding of best practices for vulnerability management and compliance
  • Experience or proficiency with Linux and Windows administration, bash, Python, Ansible, PowerShell scripting, Python, Windows PowerShell, Nessus, Wireshark, Nmap, Elastic Stack (Elasticsearch, Logstash and Kibana).
  • Excellent understanding of Linux audit and logging system architecture. Good understanding of directory services - Active Directory and LDAP.
  • Agile software development/management experience including in application hardening through code scanning (with tools like Coverity/Fortify) and vulnerability mitigation
  • Certifications - Sec+, CySA, CASP, CISSP., Security+.
  • TS/SCI and CI Poly.

#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.

L3Harris Technologies is an E-Verify Employer. Please click here for the E-Verify Poster in English or Spanish. For information regarding your Right To Work, please click here for English or Spanish.

About L3 Harris

L3 Harris

L3 Harris is one of the largest defense and aerospace companies in the United States, delivering advanced technologies that support missions across air, land, sea, space, and cyber domains. The company develops communications systems, space payloads, intelligence platforms, electronic warfare capabilities, missile defense technologies, and mission-critical sensors used by the U.S. military, intelligence community, and allied nations around the world.

For job seekers, L3Harris offers opportunities across engineering, software development, cybersecurity, space systems, manufacturing, intelligence, program management, and mission operations. The company is especially attractive to veterans, cleared professionals, and engineers who want to work on advanced technologies that directly support national security. With programs spanning tactical communications, ISR platforms, satellite systems, and defense electronics, employees have the opportunity to contribute to some of the military’s most important capabilities.

Unlike companies focused on a single mission area, L3Harris operates across a diverse portfolio of defense technologies, providing employees exposure to a broad range of programs and technical disciplines. Teams work on everything from secure communications and autonomous systems to space-based sensors and electronic warfare platforms, creating opportunities for both specialization and long-term career growth within the organization.

As governments continue investing in modernization, space capabilities, resilient communications, and advanced sensing technologies, L3Harris remains one of the most important employers in the defense industry. For professionals seeking a mission-driven career with strong growth opportunities, technical challenges, and direct impact on global security, L3Harris continues to stand out as a leading destination in aerospace and defense.

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