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Lead, Systems Engineer (Network)

L3Harris and Careers
Greenville, TX Full Time
POSTED ON 12/26/2025
AVAILABLE BEFORE 2/25/2026

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 Technologies is the Trusted Disruptor in the defense industry. 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: Lead, Systems Engineer
Job Code: 30172
Job Location: Greenville, Texas (On-Site)
Job Schedule: 1st Shift 9/80

Job Description:

We are seeking a highly skilled and experienced Systems Engineer specializing in system networking. The ideal candidate will possess extensive experience in Beyond Line of Sight (BLOS) communications, aircraft and ground station networking and architecture, VLANs, ACLs, tunneling, bulk encryptors, including KG-250s. This role requires strong expertise in testing and troubleshooting complex networking systems.

This position will support large, complex project initiatives of substantial importance to the organization with minimal oversight or direction. The candidate will communicate with internal leadership, external subcontractors and customer teams to explain and influence changes to practices, processes and approaches. The candidate will provide input into new products/processes and implement operational plans that have measurable impact on business or functional results.

Essential Functions:

  • Design, develop, and integrate networking architecture for aircraft and ground station systems, ensuring robust and secure communication links.
  • Implement and manage Beyond Line of Sight (BLOS) communication systems to maintain connectivity over extended distances.
  • Configure and manage tunneling protocols to support secure data transmission across networks.
  • Deploy and configure bulk encryption devices, including KG-250s, to ensure data security and compliance with industry standards.
  • Architect robust and redundant network systems.
  • Perform comprehensive testing and validation of network systems, including functional verification, performance testing, and security assessments.
  • Troubleshoot and resolve network-related issues, ensuring minimal downtime and optimal performance.
  • Collaborate with cross-functional teams, including software, hardware, and systems engineers, to define requirements and develop integrated technical solutions.
  • Develop and maintain detailed technical documentation, including network diagrams, system specifications, test plans, and troubleshooting guides.
  • Stay current with advancements in networking technology and industry standards to ensure continuous improvement of systems and processes.
  • Strong knowledge and experience with Beyond Line of Sight (BLOS) communications.
  • Proficiency in configuring and managing tunneling protocols and bulk encryption devices, particularly KG-250s.
  • Testing and troubleshooting complex network systems.
  • Analytical and problem-solving skills, with the ability to work effectively in a collaborative, team-oriented environment.
  • Strong communication skills, with the ability to convey complex technical information to both technical and non-technical stakeholders.
  • Familiarity with industry standards and regulations related to networking and data security.
  • Excellent communication skills and ability to work effectively in a team environment.
  • Able to travel 10%.
  • Ability to obtain and maintain a Secret Clearance.
  • Other duties as assigned by Supervisor.

Qualifications:

  • Bachelor’s Degree with nine (9) years of experience with network system design, integration, and optimization of secure, resilient, and scalable network architectures across complex mission critical environments.
  • Graduate Degree with seven (7) years of experience with network system design, integration, and optimization of secure, resilient, and scalable network architectures across complex mission critical environments.
  • In lieu of a degree, a minimum of 13 years of experience with network system design, integration, and optimization of secure, resilient, and scalable network architectures across complex mission critical environments.
  • Must be a U.S. Citizen.
#LI-AH1

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.

Salary.com Estimation for Lead, Systems Engineer (Network) in Greenville, TX
$85,847 to $102,522
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