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Security Network Engineer

Location: LINX London Office


  • Security Network Engineer

Reports to:

  • LINX Network Operations Manager

Based in:

  • The position will be based in the LINX London office, but occasional travel to the LINX Peterborough office will be required along with some international travel


  • Work with security office to develop and implement security policies, standards and procedures
  • Implement, configure and maintain security platforms including Cisco and Juniper firewalls
  • Implement, configure and maintain IDS/IPS platforms
  • Implement and maintain DDoS mitigation tools
  • Lead and deliver successful projects following Agile processes
  • Development and implementation of technology and infrastructure upgrades for the improvement and growth of the exchange
  • Plan and implement software and hardware upgrades, usually focusing on improvements to the network, implementation of new technologies, investigations, testing, enhancements etc.
  • Configure and maintain network automation platforms
  • Ongoing day-to-day Network maintenance
  • Expectation to install and test sizable network devices
  • Perform and manage significant network maintenance work, some of which could run throughout any period of the day
  • 24x7 on call rota
  • Third point of escalation for support issues. provide back-up to 2nd line network engineers and 1st line NOC engineers, covering absence and helping with workload and administration
  • Awareness of and working to budgets
  • Any other duties required for the overall technical and organisational operation of LINX


Prerequisite Skills:

  • Minimum 4/5 years experience in network/ISP environment
  • Advanced complex problem solving skills
  • Debugging/analytical skills
  • Good oral and written communication skills
  • Eye for detail, self-starting and independent, but able to work within predefined areas of responsibility
  • Good project management skills
  • Thorough understanding of Security protocols
  • Thorough understanding and experience of Ethernet/Layer 2 switched Networks
  • Thorough understanding and experience of Juniper routers, firewalls and JUNOS
  • Experience of Cisco firewalls and IDS platforms
  • Knowledge of vulnerability assessment and penetration testing
  • Thorough knowledge of IP routing protocols
  • Thorough understanding and experience of MPLS/VPLS/EVPN technologies
  • Knowledge of LINUX/UNIX system administration skills
  • Working understanding of scripting language (Python, PHP, Perl)
  • Experience with automation/configuration management systems
  • Must be able to pass LAIT 3 within a reasonable period


Please note:

  • This post will be included in an on-call rota
  • You are required to be able to access the Docklands area within one hour
  • You will be required to be security screened to BS7858:1996 standard and CRB checked (this will start at your induction)
  • You are required to have the right to live and work in the UK

Closing date for applications:

11th December 2017 (unless the position is filled sooner)

To apply:

To apply for any vacancy at LINX you must have the right to live and work in the UK. Applicants should verify their right to live and work in the UK and then fill in the form below. So please tick the appropriate box below to confirm your work status.


We will only consider applicants that include (as well as your CV and covering letter saying why you think you should be considered), a brief statement explaining why your previous work experience makes you an interesting candidate for LINX. Please keep this to a maximum of 500 words.

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© London Internet Exchange, 2017 Registered office: London Internet Exchange Limited, 2nd Floor, Trinity Court, Trinity Street, Peterborough PE1 1DA United Kingdom . Registered in England, Number: 3137929
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