Network Engineer (Contract) – London, UK

JR United Kingdom; City Of London; On-site; GBP 60,000 - 90,000; Full time

Job summary

A leading financial services firm seeks a Network Engineer for their London office. The role includes deploying and managing network infrastructure, ensuring operational efficiency, and collaborating with various teams in a fast-paced environment. Applicants should have substantial experience, particularly in low-latency network scenarios.

Qualifications

• 5 years of experience in network solutions administration and deployment.
• Experience in low-latency environments is preferred.
• Strong documentation and problem-solving skills.

Responsibilities

• Deploy and configure Exchange networking infrastructure.
• Provide second-line support for exchange infrastructure.
• Monitor and improve network availability and performance.

Skills

OSPF

BGP

Problem-Solving

Tools

Zabbix

Fortinet

Job description

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Network Engineer (Contract) – London, UK, london (city of london)

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Client:

GFO-X

Location:

london (city of london), United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Views:

2

Posted:

16.06.2025

Expiry Date:

31.07.2025

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Job Description:

GFO-X is seeking a Network Engineer to join our growing team in London, UK.

GFO-X is the UK's first regulated and centrally cleared trading venue dedicated to digital asset derivatives.

Role:

• Deployment and configuration of Exchange networking infrastructure, including switches, routers, and firewalls
• Working with products from Cisco, Arista, FS.com, Fortinet
• Second-line support of exchange infrastructure
• Monitoring and improving the availability, resiliency, and performance of the exchange networking infrastructure.
• Monitoring platform capacity and identifying where we may have insufficient headroom
• Support of the Trading Platform Support and Exchange Operations teams to assist in daily exchange operations and resolving operational issues
• Working with the Security team to implement corporate security policies to ensure our IT environments adhere to internal and industry-standard policies and practices
• Contributing to out-of-hours market rehearsals and test sessions
• Propose and lead projects that improve our test and production environments
• Create and maintain technical documentation
• Contribution to Exchange design and architecture discussions
• Work shifts and on-call as may be required

Requirements:

• At least 5 years of experience in administering and deploying network solutions in similar industries — ideally with experience in a high-frequency or market-making environment
• Experience in configuring and managing resilient, low-latency environments is particularly welcome
• Demonstratable skills with standard network protocols: OSPF, BGP, BFD, VRRP, HSRP, RSTP
• Working knowledge of multicast architecture and protocols including PIM-SM and IGMP v2
• Experience in the configuration of multi-VRF environments
• Exposure to configuring the Zabbix monitoring platform or similar
• Familiarity with firewall appliance management (Fortinet preferred)
• Hands-on experience with identifying and mitigating platform security issues and threats
• Very strong problem-solving skills and a sense of ownership of their domain
• Demonstrable continuous learning and acquisition of new skills
• Self-starter and independent, able to work within a team. Detail-oriented with a structured approach to managing workload
• Capable of interacting with different teams throughout the organization and with external clients to identify/resolve technical issues in a professional and effective manner
• Ability to write clear, concise, and comprehensive documentation for processes and systems
• Experience in proposing and evaluating new hardware and software solutions
• Strong command of spoken and written English
• Previous working experience in a Financial Services/FinTech environment, or similar high-pressure industry.

This role is to be based at our London office headquarters. Application from any region is acceptable, but candidates based in the United Kingdom will be given preference. GFO-X is an equal opportunities employer committed to diversity and inclusion. Competitive benefits included.

If you are interested in any of our roles, please apply through the link provided in the job posting.

Inquiries from agencies should be directed to [emailprotected] . Please refrain from sending recruitment inquiries to any other email address or individual within our organization. GFO-X does not guarantee employment or engagement based solely on inquiry.

All unsolicited CVs from agencies shall be treated as such and will not be counted as submissions.