L3Harris is seeking a Network Engineer to support the design, implementation, maintenance, and security of classified network environments up to Top Secret in Salt Lake City, Utah. The successful candidate will serve as a mid-level technical contributor responsible for ensuring secure, reliable, and compliant network operations supporting mission-critical programs.
This role requires strong experience with enterprise networking technologies, secure infrastructure design, and troubleshooting within controlled classified environments. The ideal candidate will be comfortable working independently, collaborating across multidisciplinary teams, and supporting lifecycle upgrades, compliance initiatives, and operational sustainment activities.
Essential Functions
Design, implement, maintain, and troubleshoot classified network infrastructure supporting operations up to the Top Secret level.
Engineer secure network solutions including routing, switching, firewall, and VPN technologies.
Monitor and optimize network performance, availability, and capacity across mission-critical environments.
Investigate and resolve complex network issues, outages, and security-related events.
Support classified network compliance activities including system hardening, audit readiness, and accreditation efforts.
Apply cybersecurity best practices to network architecture, segmentation, access controls, and device configuration.
Create and maintain network diagrams, implementation plans, technical documentation, and standard operating procedures.
Execute network changes in accordance with established configuration management and change control processes.
Partner with cybersecurity, systems administration, and program teams to maintain secure and compliant infrastructure.
Support technology refresh, network modernization, and lifecycle replacement efforts.
Provide technical leadership and mentorship to less experienced team members as needed.
Participate in on-call rotation, scheduled maintenance windows, and after-hours operational support as required
Required Qualifications
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, minimum of 10 years of prior related experience.
Current CCNP certification required.
Active Top Secret security clearance required, or ability to obtain and maintain one as required by the program.
Preferred Qualifications
Experience supporting enterprise network infrastructure in secure or classified environments.
Experience with routers, switches, firewalls, VPNs, and network monitoring/management tools.
Strong knowledge of TCP/IP, OSPF, BGP, VLANs, ACLs, STP, and QoS.
Experience with secure network design, implementation, and sustainment.
Ability to troubleshoot and resolve advanced network performance and connectivity issues.
Experience with technical documentation, network diagrams, and formal change management processes.
Strong communication and collaboration skills.
Experience supporting DoD or other federal classified network environments.
Familiarity with DISA STIGs, RMF, NIST 800-53, and related cybersecurity/compliance frameworks.
Experience with Cisco, Palo Alto, Juniper, or equivalent enterprise technologies.
Additional certifications such as Security+, CCIE, CISSP or firewall/security vendor certifications.
Experience with enclave architecture, cross-domain solutions, or air-gapped network environments.
Experience supporting network modernization, infrastructure refresh, or mission systems integration efforts.
Prior experience serving as a technical lead, senior engineer, or subject matter expert.
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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.
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