L

L3Harris Technologies

Global defense contractor delivering aerospace tech

Senior IT Network Engineer

Network Engineering & AdministrationUpdated on Nov 14
Full-timeFarnborough, UKNo salary listed

About the Job

Requirements

  • A Bachelor's degree with eight years of prior related experience or a graduate degree with six years of prior related experience.
  • Five to ten years of network or IT security experience at enterprise or large scale.
  • Experience using one or more of Palo Alto firewalls (physical and virtual), Palo Alto Networks services such as Threat, Prisma and GlobalProtect, or cloud services such as Azure and AWS.
  • Experience with SD-WAN implementation and/or support.
  • Experience with logging and monitoring tools such as Splunk, Spectrum or ThousandEyes.
  • Extensive knowledge and experience of core routing and switching design, configuration and troubleshooting.
  • Administration experience with hyperconverged technologies such as Nutanix or Cohesity.
  • Windows and Linux server administration.
  • Certifications such as CISSP, CISA, PCNSE, Security+ or CCNA.
  • Right to work in the UK and eligibility for access to classified information; government security checks apply. UK nationality may be required depending on the role.

Responsibilities

  • Interface with business leaders on strategic planning and design of cloud and compute services, security, voice, data centre and NOC.
  • Provide technical expertise and support in troubleshooting issues and optimising performance.
  • Design, troubleshoot, document and implement network components and services, including Layer 2/3, VPC, VDC, data centre zones, spanning tree, VRF, VTP, VLANs and cabling; isolate and resolve problems.
  • Support day-to-day firewall and remote-access changes for Palo Alto Networks devices and services.
  • Devise solutions to operational problems within the capacity and limitations of installed equipment.
  • Identify equipment upgrade opportunities and coordinate acquisition, deployment and implementation.
  • Identify and recommend network topology modifications, enhancements, overhauls and migration plans to address capacity, resiliency or changing business needs.
  • Support network architecture and engineering reviews, change planning and other oversight discussions.
  • Create and maintain documentation for network operations, CISO and support teams.
  • Support Tier 2–3 teams in resolving complex issues.
  • Participate in on-call support, scheduled weekend outages and disaster recovery activities as required.
  • Respond to cybersecurity incidents and proactively engage with relevant stakeholders.
  • Work primarily in the office, with occasional travel to other UK and EMEA sites.

About the Company

L3Harris Technologies

Global defense contractor delivering aerospace tech

L3Harris Technologies provides advanced aerospace, defense, and space systems for governments and commercial customers. Its products include sensors, communications, and propulsion—such as tactical radios, night-vision gear, satellite payloads, missile defense, and space propulsion—delivered as integrated systems for operations across air, land, sea, space, and cyber domains. The company blends legacy technologies from two joining giants with newer capabilities, faster acquisition cycles, and a focus on missiles, space, and resilient communications to field solutions quickly. Its goal is to be a trusted, scale-ready provider of next‑generation defense and intelligence capabilities for national security and related customers.

Company size
10,001+
Company stage
IPO
Headquarters
Melbourne, FL
Founded
1895

Recently Posted Jobs

Explore more opportunities at L3Harris Technologies

See more jobs