Network Security Specialist

Network Security Specialist

Posted 1 week ago by Infoplus Technologies UK Limited

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Negotiable
Inside
Onsite
London Area, United Kingdom
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Amazon Web Services (AWS) Border Gateway Protocol Check Point Certified Security Administrator (CCSA) R80 Cisco Meraki Computer Hardware Domain Name System (DNS) Servers Dynamic Host Configuration Protocol (DHCP) Dynamic Multipoint Virtual Private Networks Enhanced Interior Gateway Routing Protocols Firewall Firmware ICAS Chartered Accountant (CA) Management Network Address Translation Network Monitoring Network Performance Network Protocols Network Security Open Shortest Path First (OSPF) Open Systems Interconnection SSL Security Technical Support Virtual Private Networks (VPN) Wide Area Networks Wireless LAN

Summary: The role of Network and Security L2 Admin involves providing technical support and troubleshooting for a major airline in the UK. This position requires strong communication skills and hands-on technical expertise across various networking disciplines. The role is customer-facing and demands a proactive approach to network performance monitoring and incident management. The position is based onsite in London for a duration of 6 months and falls under inside IR35 regulations.

Key Responsibilities:

  • Strong working knowledge of OSI layers 1-7 for troubleshooting complex networking issues.
  • Monitor network performance and identify malfunctions in hardware and software.
  • Triage and troubleshoot incidents, coordinating with vendors and IT teams for solutions.
  • Develop relationships with customers and supporting departments.
  • Support Cisco WLAN Controllers, SSID, and Access Points.
  • Implement and troubleshoot Firewalls, VPNs, and NAT policies.
  • Configure and troubleshoot routing and switching protocols.
  • Understand LAN, WAN, and SDWAN concepts in an enterprise environment.
  • Implement and troubleshoot DNS, IPAM, and DHCP.
  • Administer F5 LTM, including SSL certificate renewal and software upgrades.
  • Analyze data from network monitoring tools to prevent crises.
  • Test and implement software patches and firmware for network devices.
  • Manage major incidents and vendor relationships.

Key Skills:

  • Routing & Switching (Cisco/Juniper)
  • DC-Core Network Protocol BGP/OSPF
  • Checkpoint Firewall and VPN concepts
  • Cisco Wireless and SD WAN concepts
  • F5 LTM administration
  • DNS/DHCP, IPAM knowledge
  • CCNP, CCSA, F5 Certification
  • Good to have: Cisco Meraki, AWS Networking, Cisco ISE & Security
  • NMS tools: BIG IQ, SolarWinds, CA Spectrum, Thousand Eyes, NetBrain
  • Firewall Monitoring Tools (Checkpoint)

Salary (Rate): undetermined

City: London

Country: United Kingdom

Working Arrangements: on-site

IR35 Status: inside IR35

Seniority Level: undetermined

Industry: IT

Detailed Description From Employer:

Job title: Network and security L2 Admin

Will the role be 100% remote, hybrid or 100% office? 100% Onsite

If the role is hybrid/ office based specify location: Waterside, London, UK

Duration of assignment: 6 months contract

InsideIR35

Role description: We are looking for Network L2 admins for one of the major airlines in UK. This role is customer facing and requires strong technical hands on and good communication skills as outlined below.

Key responsibilities:

  • Candidates should have a strong working knowledge of OSI layers 1-7, with the ability to apply analytical and troubleshooting skill sets to solve complex problems across all networking disciplines
  • Monitor the performance and capability of the network using diversified tools. Identify the malfunctioning of hardware, software, and alerts events.
  • Triage or troubleshoot the issues & incident, within the defined areas. Follow Standard Operating Manuals and coordinate with third party vendors, customer contacts, or other IT teams to implement solutions and resolution.
  • Develop strong relationships with the customer and all other supporting departments.
  • Experience on supporting the Cisco WLAN Controllers, SSID and Access Points
  • Experience on Implementing and troubleshooting Firewalls Security, VPN’s, NAT policy, Software Patch management
  • Configuring and troubleshooting routing & switching protocols: Set up and troubleshoot protocols like OSPF, BGP, EIGRP, VLANs, STPs, VRF, MC-LAG, FHRP,DMVPN, NAT Policy.
  • Solid understanding of LAN, WAN and SDWAN concepts (including wireless LAN) with experience in supporting enterprise class routers, switches in a global and enterprise network environment.
  • Experience on Implementing and troubleshooting Internal and External DNS, IPAM, DHCP for IP management.
  • Experience on Implementing and troubleshooting F5 LTM administration, SSL Certificate renewal, iRules creation, Software Upgrade & Patching
  • Proactive Analysis: Review and analyze the DATA from Network Monitoring Tools to identify the best course of action to avert potential crises.
  • Test & Implement software patches & firmware for the network & security devices
  • Vendor or Supplier coordination, Problem-solving skills and ability to meet reasonable deadlines.
  • Major / High Severity Incidents management & Problem, Vendor Management

Key skills/knowledge/experience:

  • Must Have
  • Routing & Switching (Cisco/Juniper – OEM’s) - DC
  • DC-Core Network Protocol BGP/OSPF concepts
  • Checkpoint Firewall – Network Security & VPN concepts
  • Cisco Wireless & SD WAN concepts
  • F5 LTM
  • DNS/DHCP, IPAM
  • CCNP, CCSA, F5 Certificate
  • Good to Have
  • Cisco Meraki
  • AWS Networking,
  • Cisco ISE & Security
  • NMS: BIG IQ, SolarWinds, CA Spectrum, Thousand eyes, NetBrain, Firewall Monitoring Tools (Checkpoint)

Special working conditions: L2 Admins – Physical presence in the office covering 24x7 shift

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