Network Engineer

Stratford, Greater London

We are in search of a Network Engineer to join Leidos UK within the CIO Team, based in Whiteley, UK. What will I be doing?

  • Maintaining network infrastructure across on-prem and cloud environments.
  • Monitor network performance and proactively resolve issues.
  • Take ownership of vulnerability management for all network devices.
  • Deliver the day-to-day network operations service in line with agreed policies, processes and procedures.
  • Implementing changes to the network environment.
  • Part of a team with the responsibility for engineering of SD-WAN, WLAN, LAN, NAC, IPAM and other Network Services (e.g. Splunk, PRTG)
  • Configure, manage and troubleshoot Palo Alto Firewalls and Authentication services.
  • Provide Network support for UK wide projects working closely with multiple teams.

    Hands on experience in configuring and troubleshooting VPC, VDC, BGP, EIGRP, VRF and other key mainstream protocols
  • Hands on experience in deploying, configuring and troubleshooting Palo Alto firewalls
  • Thorough and demonstrable understanding of Cisco Enterprise LAN and Data Centre environments, 3rd line support level including deployment, administration and troubleshooting
  • Thorough and demonstrable understanding of WAN connectivity and routing protocols also with experience and understanding of the implementation, configuration and management of virtual and physical networking solutions
  • Focusing on secure accredited environments including security boundaries and rulesets
  • Experience of planning changes and communicating plans with project management and wider team. This can come from consolidating networks, changing IP addressing schemes etc.
  • Hands on experience in troubleshooting Layer 2/3 switching and routing and IPSEC tunnels
  • Excellent communications skills, organisational skills and autonomous working
  • Can tackle complex problems and incidents sometimes with limited detail
  • Experience of working under pressure to meet deadlines while handling multiple priorities
  • Keen interest in investigating and proposing new products and solutions as well as staying current by taking up training opportunities
  • Ability and desire to help less experienced colleagues learn and develop
  • You Might Also Have:
  • Hands on experience in deploying and troubleshooting SDWAN
  • Hands on experience of SDDC with NSX, VXLAN and virtual firewalls
  • Experience working in global companies and ensuring global standards and requirements are met
  • Understanding of load balancers and Global Servers Load Balancing
  • Experience or desire to learn automation techniques of network tasks
  • Understanding/experience of Network Access Controls
  • Understanding/experience of TACACS Authentication
  • Understanding of wireless networking
  • Experience in ITIL ICT service delivery on critical infrastructure
  • Understanding of MFA and PKI

    At Leidos we are PASSIONATE about customer success, UNITED as a team and INSPIRED to make a difference. We offer meaningful and engaging careers, a collaborative culture, and support for your career goals, all while nurturing a healthy work-life balance.
  • We provide an employment package that attracts, develops and retains only the best in talent. Our reward scheme includes:
  • Contributory Pension Scheme
  • Private Medical Insurance
  • 33 days Annual Leave (including public and privilege holidays)
  • Access to Flexible benefits (including life assurance, health schemes, gym memberships, annual buy and sell holidays and a cycle to work scheme)
  • Flexi-Time Working
Posted 2026-05-03

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