Network Engineer

Radley James; England; On-site; GBP 72,000 - 82,000; Full time

Job summary

A leading trading technology firm is seeking a Network Engineer to join their infrastructure team in London. This role involves deploying, configuring, and supporting network infrastructure in a fast-paced, low-latency environment. Candidates must have a Bachelor's in Computer Science and experience with enterprise networking platforms like Cisco and Juniper. The position offers a competitive salary range of £72,000 to £82,000 along with opportunities for collaboration across multiple regions.

Qualifications

• Bachelor’s degree in Computer Science or a related field is required.
• Strong understanding of networking fundamentals is necessary.
• Hands-on experience with enterprise networking platforms is a must.
• Familiarity with automation or scripting tools is beneficial.

Responsibilities

• Deploy, configure and support network infrastructure across environments.
• Diagnose and troubleshoot network incidents and performance issues.
• Support low-latency systems where reliability and speed are critical.
• Collaborate with engineers and researchers across multiple regions.

Skills

Networking fundamentals (BGP, OSPF, TCP/IP, L2/L3 routing)

Experience with enterprise networking platforms (Cisco, Arista, Juniper)

Basic network security concepts (ACLs, firewalls, segmentation)

Linux-based systems knowledge

Automation or scripting tools (Python, Ansible, Terraform)

Strong communication skills

Education

Bachelor’s degree in Computer Science or a related field

Tools

Cisco

Arista

Juniper

Job description

I'm recruiting for a leading Trading technology-driven firm, they're seeking a Network Engineer to join their growing infrastructure team in London. This is an excellent opportunity to work in a high-performance, low-latency environment supporting critical trading and research systems.

You’ll work closely with senior network engineers, quantitative researchers and software developers across the UK and U.S. You'll help to design, deploy and support robust network infrastructure in a fast-paced, collaborative setting.

What You’ll Do

• Deploy, configure and support network infrastructure across on-prem and data center environments
• Diagnose and troubleshoot network incidents, performance issues and outages
• Support low‑latency systems where reliability and speed are critical
• Collaborate with engineers and researchers across multiple regions
• Participate in on‑call rotations, including occasional weekend support

What They’re Looking For

• Bachelor’s degree in Computer Science or a related field
• Strong understanding of networking fundamentals (BGP, OSPF, TCP/IP, L2/L3 routing and switching)
• Hands‑on experience with enterprise networking platforms (Cisco, Arista, Juniper, or similar)
• Working knowledge of basic network security concepts (ACLs, firewalls, segmentation)
• Experience with Linux‑based systems and the Linux networking stack
• Familiarity with automation or scripting tools (Python, Ansible, Terraform, Chef, or Puppet)
• Strong communication skills and a proactive, problem‑solving mindset

Nice to Have

• Experience in low‑latency or multi‑data center environments
• Exposure to cloud networking (AWS, Azure, or GCP)
• Experience with NetOps tools and practices (Git, CI/CD, Terraform, monitoring platforms)

If this is an opportunity you’d like to explore, please get in touch:

Seniority level

Associate

Employment type

Full‑time

Job function

Finance and Information Technology

Industries

Financial Services and Capital Markets

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Location: London, United Kingdom

Salary: £72,000.00-£82,000.00