Level 3 Communications, Inc

Sr. Specialist, IT Security (Network Security Engineer)

Level 3 Communications, Inc$96K — $178K *
Information Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's Degree and minimum 6 years of relevant experience, or Graduate Degree and 4 years of related experience, or 10 years of related experience without a degree
  • Hands-on experience with Infrastructure Management tools, specifically Aruba Switch and Cisco routers
  • Strong knowledge of Infrastructure Security principles
  • Experience with configuration management and security patching
  • Familiarity with network security technologies, including VPNs
  • Ability to obtain and maintain a US Secret security clearance

Responsibilities

  • Design and implement the air-gapped network infrastructure
  • Administer and optimize network systems
  • Lead troubleshooting of connectivity and security issues
  • Manage day-to-day operations of network systems
  • Collaborate with Security and business stakeholders to ensure reliable service delivery
  • Oversee configuration management tasks, including patching and updates
  • Engage in Linux and Windows networking administration

Benefits

  • Health and disability insurance
  • 401(k) match
  • Flexible spending accounts
  • Employee Assistance Program (EAP)
  • Education assistance
  • Parental leave
  • Paid time off and company-paid holidays
Full Job Description
Job Title: Sr. Spec, IT Security (Network Security Engineer)

Job Code: 43291

Job Location: Anaheim, CA (on-site)

Job Schedule: 9/80 Regular (Employees work 9 out of every 14 days - totaling 80 hours worked - and have every other Friday off)

Job Description:

The position is responsible for the design, implementation, administration, and ongoing optimization of L3Harris air gapped network infrastructure across office and operational environments. This role owns the day-to-day operation and health of network systems, leads troubleshooting of connectivity and security issues, and drives infrastructure projects from planning through completion. The position works closely with Security, and business stakeholders to deliver reliable and secure services. The ideal candidate brings hands-on experience with enterprise-grade networking platforms, a strong foundation in network security and VPN technologies, and the ability to operate with minimal supervision while contributing to a high-performing team.

Essential Functions:

  • Infrastructure Management:
    • Aruba Switch Management
    • ClearPass Administration
    • Cisco VPN Management
    • Cisco Router Management
  • Infrastructure Security:
    • Configuration Management
    • Patching and Updates
  • Linux Administration: Red Hat 9.x
  • Windows Networking: Account Management and File Share Management.
  • Ability to obtain and maintain a US Secret security clearance.


Qualifications:

  • Bachelor's Degree and minimum 6 years of prior relevant experience. Or, 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.
  • Must have experience with Infrastructure Management, including Aruba Switch Management, ClearPass Administration, Cisco VPN Management.
  • Must have experience with Infrastructure Security.


Preferred Additional Skills:

  • Active Secret Clearance.
  • Experience with Windows Networking, including Account Management and File Share Management.
  • Experience with Linux Administration: Red Hat 9.x
  • Certifications are a plus but not required.
  • Project Management skills are a plus.


In compliance with pay transparency requirements, the salary range for this role is $96,000 - $178,000. This is not a guarantee of compensation or salary, as final offer amount may vary based on factors including but not limited to experience and geographic location. L3Harris also offers a variety of benefits, including health and disability insurance, 401(k) match, flexible spending accounts, EAP, education assistance, parental leave, paid time off, and company-paid holidays. The specific programs and options available to an employee may vary depending on date of hire, schedule type, and the applicability of collective bargaining agreements.

#LI-IK1

Similar Jobs

More Jobs at Level 3 Communications, Inc

More Information Technology Jobs

Find similar Sr. Specialist, IT Security (Network Security Engineer) jobs: