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Senior Specialist, Network Systems Engineer

Jobs via Dice
Greenville, TX Full Time
POSTED ON 1/28/2026 CLOSED ON 2/27/2026

What are the responsibilities and job description for the Senior Specialist, Network Systems Engineer position at Jobs via Dice?

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: Senior, Network Systems Engineering

Job Code: 31328

Job Location:Greenville, Texas

Schedule: 9/80

Job Description:

The Senior Specialist, Systems Engineering - Network Engineer (NE) performs technical planning, system integration, verification, and validation, and troubleshooting for total systems and/or subsystems. The Sr. Specialist NE is part of a team that supports the requirements, design, development, test, and integration of complex, specialized hardware/software systems installed on ground and airborne communication platforms.

This position includes an expectation of 10 to 15% shift, on-call, or weekend work.

Essential Functions:

  • Assist in the design and development of physical and logical network architectures incorporating voice, video, and data capabilities across multiple security domains.
  • Design robust and scalable network solutions to meet business requirements.
  • Implement network changes and upgrades according to project plans.
  • Maintain networks (both LAN, MAN & WAN) connecting airborne and ground systems via terrestrial and Beyond Line of Sight (BLOS) circuits.
  • Coordinate with the ISP for the installation of lines and necessary hardware.
  • Configure edge devices and establish BGP peering if required.
  • Collaborate with the ISP for effective issue diagnosis and resolution.
  • Translate the voice of the customer into system-level requirements.
  • Troubleshoot and resolve complex network issues, i.e., BGP flapping, .and network instability.
  • Monitor network performance and ensure network reliability and availability.
  • Perform requirement traceability methods and purposes, to reduce risk and improve project outcomes.
  • Knowledgeable of IP Multicast, Class of Service (CoS), Layer 3 VPNs, and Layer 2 VPNs.
  • Assist and or perform systems engineering trade studies
  • Assist in the evaluation of trade studies for accuracy and completeness
  • Write subsystem specifications based on system level requirements
  • Evaluate alternative solutions and establish preliminary system design
  • Review and evaluate diagrams to ensure design details trace to system requirements
  • Develop and execute network test procedures ensuring system performance and capabilities meet system requirements
  • Prepare effective presentations to communicate technical network information to non-technical professionals
  • Collaborate with multiple engineering disciplines to design a cohesive, credible multi-security domain network and integrate the resulting design in a MIL-STD based development environment.
  • Prepare and maintain detailed network documentation.
  • Generate reports on network performance, issues, and project progress.

Qualifications:

  • U.S. Citizenship required.
  • Ability to obtain/maintain a Top Secret/SCI Security Clearance
  • Bachelor's Degree and minimum 6 years of prior relevant experience.
  • Graduate Degree and a minimum of 4 years of prior related experience.
  • In lieu of a degree, there is a minimum of 10 years of prior related experience.
  • Demonstrated knowledge and experience in network (LAN/WAN) design incorporating industry standard security best practices; NIST framework
  • Demonstrated network engineering experience including IP addressing, switching and routing, VLANs, VPNs, video teleconferencing, VoIP telephony, and LANs/WANs
  • Demonstrated experience in routing protocols including MPLS, BGP, OSPF, PTP.
  • Certification and Accreditation process and implementation of systems that achieved an Authorization to Operate on government networks
  • DODAF knowledge
  • Configuration, integration, and troubleshooting of routers, switches, voice, and video teleconferencing equipment
  • Demonstrated experience developing, authoring, and implementing software and system test plans in a team environment
  • Demonstrated experience working successfully both independently and in a team environment with the ability to lead small test teams through an entire build cycle
  • Demonstrated experience with testing, integrating, and verifying software and/or hardware
  • Willingness to travel

Preferred Additional Skills:

  • Preferred Certifications or must be able to articulate and demonstrate the following standards:
    • Current Cisco Certified Network Professional (CCNP)
    • Security
    • Network
    • Juniper Networks Certified Internet Provider - Router and Switching Professional (JNCIP-SP)
    • Arista Certified Professional (ACE-P)
    • Palo Alto Networks Certified Network Security Administrator (PCNSA)
  • Current Top Secret security clearance
  • Experience with Kubernetes deployment/administration
  • Experience with SATCOM solutions/protocols devices is also a plus
  • Experience with HAIPE devices is also a plus
  • RedHat Enterprise: Linux
  • Knowledgeable about encryption protocols, certificate management, and securing VPN connections.
  • Experienced in defining and enforcing firewall policies, rules, and access controls to protect networks from unauthorized access and threats.
  • Knowledgeable about network security concepts, including intrusion detection and prevention systems (IDS/IPS), NAT (Network Address Translation), and port forwarding.
  • Proficient in monitoring firewall logs and analyzing traffic to identify and mitigate security threats.
  • Experience working with subcontractors and US Government customers
  • Assessment and Authorization (A&A) process and implementation of systems that achieved an Authorization to Operate (ATO) on government networks DODAF knowledge
  • Experience working government and/or military programs

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. 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 Senior Specialist, Network Systems Engineer in Greenville, TX
$106,354 to $125,505
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