Senior Network Engineer

Location

London, United Kingdom (Onsite/Hybrid)

Employment Type

Full-Time

Contract Type

• B2B (Contractor)
• Job Summary
• We are seeking an experienced

Network Engineer L2 to join our team in London on a full-time B2B contract.

The successful candidate will be responsible for supporting, maintaining, troubleshooting, and optimizing enterprise network infrastructure while ensuring high availability, security, and performance.

This role requires strong hands‑on experience with Cisco networking technologies and the ability to resolve complex network incidents with minimal supervision.

Key Responsibilities

• Provide Level 2 support for enterprise LAN, WAN, WLAN, and data center network infrastructure.
• Troubleshoot and resolve network incidents related to routing, switching, wireless, VPN, and firewall connectivity.
• Configure, install, and maintain Cisco routers, switches, wireless controllers, and access points.
• Perform network monitoring, fault isolation, and root cause analysis.
• Support network upgrades, migrations, and infrastructure refresh projects.
• Implement and maintain VLANs, STP, Ether Channel, Qo S, ACLs, NAT, and network segmentation.
• Configure and troubleshoot routing protocols including OSPF, BGP, EIGRP, and static routing.
• Support VPN technologies (Site‑to‑Site and Remote Access VPN).
• Collaborate with Level 1, Level 3, Security, Infrastructure, and Project teams.
• Maintain network documentation, topology diagrams, and standard operating procedures.
• Participate in change management processes and scheduled maintenance activities.
• Ensure compliance with IT security policies and industry best practices.
• Provide on‑call or after‑hours support when required.
• Required Skills & Experience
• 3–6+ years of experience in Network Engineering or Network Support.

• Strong hands‑on experience with

• Cisco Routers and Switches
• Cisco Wireless (WLC & Access Points)
• VLANs, STP, VTP, Ether Channel
• OSPF, BGP, EIGRP
• TCP/IP, DNS, DHCP, NAT
• VPN Technologies (IPSec, SSL VPN)
• ACLs and Qo S
• Experience with network monitoring tools such as Solar Winds, PRTG, or Cisco DNA Center.
• Good understanding of firewall technologies (Cisco ASA, Fortinet, Palo Alto, or Check Point).
• Experience working in enterprise IT environments.
• Strong troubleshooting and analytical skills.
• Excellent communication and documentation abilities.
• Preferred Qualifications
• CCNA (Required)
• ITIL Foundation Certification (Preferred)
• Additional certifications in Cisco, Fortinet, or Palo Alto are advantageous.
• Soft Skills
• Strong problem‑solving abilities.
• Excellent communication and stakeholder management.
• Ability to work independently and within a team.
• Strong organizational and time management skills.
• Customer‑focused approach with attention to detail.
• Mandatory Requirements
• UK Passport Holder
• (Mandatory)
• Eligible to work in the United Kingdom.
• Willingness to work onsite in London.
• Available to work under a

Full-Time B2B Contract .

This role is ideal for a Network Engineer who enjoys working in a fast‑paced enterprise environment and has strong expertise in Cisco networking, troubleshooting, and infrastructure support.

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