Lead Systems Engineer - Network Engineering

FactSet; London; On-site; GBP 60,000 - 90,000; Full time

Job summary

A leading company in financial technology is seeking an experienced Network Engineer in London. Role involves managing network infrastructure, project management, and providing expert troubleshooting for network issues. This position requires strong knowledge of cloud technologies and routing protocols, contributing to robust network solutions for clients.

Qualifications

• 8-12 years of relevant experience in network design and implementation.
• Fluency in English, both written and verbal.
• Relevant certifications from Cisco or other vendors.

Responsibilities

• Project manage business and network team initiatives.
• Configure Cisco and Arista routers, F5 Load Balancers, and Cloud Networking Services.
• Provide expert support during network issues and troubleshoot across all network layers.

Skills

TCP/IP

Routing Protocols

LAN Switching

Troubleshooting

Communication

Collaboration

Project Management

Education

BS degree in an engineering discipline

Tools

AWS

Azure

Python

Ansible

Job description

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Client:

FactSet

Location:

London, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Reference:

291554569709

Job Views:

14

Posted:

22.06.2025

Expiry Date:

06.08.2025

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Job Description:

Responsibilities:

• Act as a knowledgeable resource for FactSet’s clients, vendors and internal leaders.
• Project manage business and network team initiatives.
• Configure Cisco / Arista Routers / Switches / F5 Load Balancers / Cloud Networking Services to provide solutions that successfully integrate into our clients, vendors and FactSet’s own internal networks.
• Build and maintain positive working relationships with clients and stakeholders.
• Provide expert support during network issues and troubleshoot across all network layers.
• Research, design and implement new connections to market data providers and other third parties.
• Optimize processes using templates, automation, and workflow systems.
• Lead and mentor team members, supporting them in achieving their career and project goals.
• Participate in shift rotation for Saturday & Sunday on-call coverage.

Minimum Requirements:

• BS degree in an engineering discipline or equivalent.
• 8-12 years of relevant experience.
• Fluency in English, both written and verbal.
• Comprehensive understanding of routing protocols, TCP/IP, Multicast, DNS, LAN switching, and Wireshark.
• Experience with BGP, EIGRP, router/switch architectures, and protocols like HTTP/HTTPS/DNS/DHCP/SNMP/SMTP.
• Experience in network design and implementation, particularly in financial or large enterprise networks.

Critical Skills:

• Familiarity with cloud technologies (AWS, Azure) and network automation tools (Python, Ansible).
• Knowledge of network operating systems (IOS, JunOS, Linux) and modern data center architectures.
• Load-Balancers: F5 LTM, ASM, iRule, A10, AWS ELB, Global Accelerator, CDN (Content Delivery Networks)
• DNS: Infoblox, Cloudflare, AWS Route53, Efficient-IP
• Cloud: AWS and Azure networking stack
• Strong troubleshooting skills, communication, and collaboration skills.
• Ability to manage multiple projects and prioritize tasks efficiently.
• Relevant certifications (Cisco or other vendors) and eagerness to learn new technologies

Company Overview:

FactSet (NYSE:FDS | NASDAQ:FDS) helps the financial community to see more, think bigger, and work better. Our digital platform and enterprise solutions deliver financial data, analytics, and open technology to more than 8,200 global clients, including over 200,000 individual users. Clients across the buy-side and sell-side, as well as wealth managers, private equity firms, and corporations, achieve more every day with our comprehensive and connected content, flexible next-generation workflow solutions, and client-centric specialized support. As a member of the S&P 500, we are committed to sustainable growth and have been recognized among the Best Places to Work in 2023 by Glassdoor as a Glassdoor Employees’ Choice Award winner. Learn more at and follow us on and.