IT Systems Administrator

The Citco Group Limited; London; On-site; GBP 30,000 - 40,000; Full time

Job summary

A leading company is seeking an IT Systems Administrator to support and maintain their global network infrastructure. This entry-level position involves providing technical support, troubleshooting network issues, and collaborating with IT teams worldwide. The ideal candidate will have strong knowledge of networking protocols and Cisco technologies. Flexibility for on-call support and travel is required.

Qualifications

• Strong knowledge in TCP/IP protocols, OSPF, BGP, and Cisco technologies.
• Experience with IPsec VPNs and firewalling.

Responsibilities

• Provide level 1 and 2 support for network infrastructure.
• Maintain and support the global Citco network.
• Troubleshoot network issues and perform maintenance.

Skills

TCP/IP protocols

OSPF multi-area

BGP v4

Cisco routers

Cisco Switching

IPsec VPNs

Firewalling

LAN switching

QOS

Network redundancy

Job description

Join to apply for the IT Systems Administrator role at The Citco Group Limited.

About the Team & Business Line: The Network operations engineers report to the Network Manager and fulfill mainly a day-to-day operations and support role. They maintain close interaction with many other global and local IT operations groups, application support teams, and development staff worldwide. They also work routinely with telecommunications carriers, network gear manufacturers, and other providers. This position focuses on network infrastructure support and day-to-day operations, but also involves implementing small projects such as hardware refreshes and network build-outs for new offices.

Responsibilities:

• Provide worldwide level 1 and level 2 support for the network infrastructure.
• Maintain, monitor, and support the global Citco network, including WAN and LAN at data centers, remote offices worldwide, and external clients.
• Manage chronic problems to resolution.
• Exercise good judgment and decision-making skills.
• Troubleshoot network issues and collaborate with other IT groups on cross-technology problems.
• Perform general network maintenance, including software upgrades and patching of network devices (firewalls, routers, switches, SDWAN, etc.).
• Follow established processes, procedures, and policies.
• Participate in on-call support rotations.
• Maintain flexibility with working shifts.
• Travel potentially up to several times per year.

Qualifications:

About You: Strong knowledge and experience in the following areas and technologies:

• TCP/IP protocols (TCP, UDP, FTP, GRE, IPsec, etc.).
• OSPF multi-area.
• BGP v4 (iBGP and eBGP).
• Cisco routers, branch office to data center grade.
• Cisco Switching (Nexus, Catalyst, and Meraki).
• IPsec site-to-site VPNs and remote access VPNs using Ivanti and Palo Alto GlobalProtect.
• Firewalling, access lists, protocol inspection.
• LAN switching, Spanning Tree protocol, VLANs, dot1Q trunking, LACP port-channels, vPC, VSS.
• QOS on LAN and WAN.
• Wide area network circuits and services (MetroE, MPLS, etc.).
• Proven experience in implementing network hardware redundancy.

Seniority level

• Entry level

Employment type

• Full-time

Job function

• Information Technology