Tech Zone LLC
Senior Network Engineer
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Network Engineer L2 (Full-Time | B2B Contract)
Position: Network Engineer L2
Location: London, United Kingdom (Onsite/Hybrid)
Employment Type: Full-Time
Contract Type: B2B (Contractor)
Eligibility: UK Passport Holder (Mandatory)
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, EtherChannel, QoS, 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.
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Required Skills & Experience
- 3–6+ years of experience in Network Engineering or Network Support.
- Strong hands-on experience with:
- Cisco Routers and Switches
- Cisco Catalyst & Nexus Platforms
- Cisco Wireless (WLC & Access Points)
- VLANs, STP, VTP, EtherChannel
- OSPF, BGP, EIGRP
- TCP/IP, DNS, DHCP, NAT
- VPN Technologies (IPSec, SSL VPN)
- ACLs and QoS
- Experience with network monitoring tools such as SolarWinds, 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.
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Preferred Qualifications
- CCNA (Required)
- CCNP Enterprise (Preferred)
- 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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