Network Engineer

Xantium; Greater London; On-site; GBP 50,000 - 70,000; Full time

Job summary

A fast-growing technology company based in London is seeking a Network Engineer to join their dynamic team. The successful applicant will assist with deploying and supporting network infrastructure while troubleshooting networking incidents. The role demands strong problem-solving skills and experience with networking concepts, specific tools, and scripting. Ideal candidates will have a bachelor’s degree in Computer Science and will collaborate with cross-continental teams. This opportunity is essential for supporting low-latency environments utilized in trading and research systems.

Qualifications

• Bachelor's degree in Computer Science or a related field.
• Foundational understanding of networking protocols and concepts.
• Hands-on experience with switching and routing platforms.

Responsibilities

• Assist in deploying, configuring, and supporting network infrastructure.
• Diagnose and troubleshoot networking incidents.
• Support low-latency trading and research systems.

Skills

Problem-solving abilities

Excellent communication skills

Networking fundamentals (BGP, OSPF, TCP/IP)

Hands-on experience with switching and routing

Scripting/automation (Python, Ansible, Terraform)

Education

Bachelor's degree in Computer Science or related field

Tools

Cisco

Arista

Juniper

Job description

The Xantium Group seeks a Network Engineer to join a successful and growing team. Working closely with our Head of Network Engineering, this person will assist in deploying, configuring and supporting network infrastructure. They will also diagnose and troubleshoot networking incidents and support low‑latency trading and research systems.

The Network Engineer will be based in London and collaborate with quantitative researchers and developers in both the U.S. and U.K. The successful candidate will have excellent communication skills, problem‑solving abilities and a strong work ethic.

Requirements

• Bachelor’s degree in Computer Science or a related field
• Foundational understanding of networking (BGP, OSPF, TCP/IP stack, L2/L3 routing and switching)
• Hands‑on experience with switching and routing platforms (Cisco, Arista, Juniper etc.)
• Grasp of basic security concepts (ACLs, firewalls, segmentation)
• Familiarity with automation or scripting (Python, Ansible, Terraform or Chef/Puppet)
• Experience with Linux‑based systems and Linux network stack
• Availability for on‑call and weekend work

Nice‑to‑Haves

• Expertise working in multi‑data centre or low‑latency environments
• Exposure to cloud networking (AWS, Azure or GCP)
• Experience with NetOps tooling (Git, CI/CD, Terraform, monitoring systems)