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Senior Manager, Technical and Security Services

Greenville, Texas
Full Time On-site

L3Harris is seeking an Information Security Systems Engineering (ISSE) Senior 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 their lifecycle. 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 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 an ATO. The Senior Manager, ISSE applies modern systems security engineering principles, practices, and technologies across the full system lifecycle. This leader ensures security is architected, designed, developed, evaluated, integrated, and sustained with the fidelity required to meet customer protection requirements and achieve system security authorization. This role manages experienced security engineering professionals and/or managers. The Senior Manager influences leadership drives adoption of new practices & technologies and ensures functional strategies convert into measurable security engineering outcomes.

Essential Functions:

  • Lead and mentor a diverse team of Information Security Systems Engineers.
  • Forecast Systems Engineering Manpower needs based on Program and Potential demand forecast.
  • Determine hiring needs and conduct searches to onboard needed System Engineers.
  • Apply systems security engineering methods to architecture, development, and integration of systems.
  • Ensure customer security needs and requirements are captured early and embedded throughout the lifecycle.
  • Lead security authorization and ATO processes.
  • Influence leadership on adoption of new security practices.
  • Track all assigned systems for A&A (Assessment and Authorization) status and oversee accreditation/re-accreditation actions.
  • Support proposal development activities including labor estimation (BOE creation and review) and technical response development
  • Establish training requirements for continued professional development of the team to meet business goals
  • Establish and manage department overhead budget and ensure staff has the tools and equipment needed to effectively conduct their roles.
  • Capable of Problem Solving, Team Leadership, Strategic Thinking / Planning, Communication, IPT / Cross Functional Behavior, Accountability, and Critical Thinking.
  • Review program budgets and schedules with SE program teams.
  • Prepare and deliver effective presentations to communicate technical information to both technical and non-technical professionals, including senior level management.
  • Ensure programs translate customer requirements into unique verifiable system level requirements.
  • Work is onsite and cannot be accomplished remotely.
  • Must have the ability to obtain a TOP SECRET/SCI.

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 engineering experience. 
  • In lieu of a degree, a minimum of 16 years of prior related engineering experience.
  • Prior Senior Management or Lead Experience in Information Security Systems Engineering.
  • Demonstrated knowledge of DoD Security policies and practices.
  • Demonstrated direction for Engineering teams, which include identifying opportunities for team training and skills advancement.

Preferred Additional Skills:

  • Experience with fixed-wing and rotary aircraft modification and mission systems.

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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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