Lead Network Engineer

Position Summary

The role includes ongoing support and reliability of the LSEG ecosystem (Platforms, Networks, Applications, Services, and Websites). The focus of this role is to provide 2nd line support to the Operations and Project Delivery (Implementation) functions, ensuring operational stability and ongoing adaptability of the LSEG global network. The primary responsibilities involve creating and maintaining software automation that enhances the reliability and availability of digital platforms and their software delivery pipelines.

• Supports the technology lifecycle through the design, build and maintenance of systems
• Administers LSEG network services, ensuring applications and services perform against baseline levels
• Monitors network services, focusing on availability, while identifying improvement opportunities
• Handles service providers (telcos), third parties and partners as required
• Makes technical design and amendment decisions and independently manages workloads
• Crafts, reviews and maintains documentation in compliance with LSEG (industry) standards
• Defines lifecycle management strategies for hardware and software, including capacity considerations
• Supports the deployment of emerging engineering patterns across development teams
• Translates business requirements into technical (network) requirements, through analysis of data
• Collaborates to multiple projects in parallel providing regular updates to multiple partners
• Builds and validates technical requirements, emphasizing performance, resilience and operability
• Participates in design work in the infrastructure and network domain, providing innovative solutions
• Supports day‑to‑day network operational issues and manages the enterprise network

• Rich experience in identifying and solving network issues end‑to‑end
• Significant experience with routing and switching and routing protocols (CCNA/CCNP preferred)
• Significant experience in network operations, project delivery and engineering
• Excellent experience in managing enterprise networks
• Experience handling DDI/Infloblox (L1 support)
• Experience with wireless infrastructure
• Experience with network technologies including Cisco, Juniper, Arista, Fortinet & F5 – at least two of these
• Strong network skills, including HSRP, NAT, MPLS, VPN, GRE, BGP and OSPF
• Basic multicast skills including IGMP, RP and PIM
• Basic knowledge of firewall technologies, including next‑generation features and functions
• Basic knowledge of load‑balancing technologies, including application delivery control
• Good knowledge of network packet captures, tooling and analysis
• Good knowledge of datacenter networking including SDN, Cisco ACI, VxLAN
• Good scripting and automation experience (Python, Ansible, Terraform, Git, Git Lab, Rundeck)
• Outstanding interpersonal skills, both spoken (verbal) and written English language abilities
• Previous experience working with architecture, engineering or network operation teams
• Previous experience working with banking infrastructure and supporting financial institution networks
• Experience in cloud networking and standard methodologies
• Proven exposure to financial sector, including low‑latency (trading) environments
• Experience managing and handling enterprise networks

Senior Associate

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

We are proud to be an equal opportunities employer. We do not discriminate on the basis of any protected class and are committed to accommodating applicants and employees in accordance with applicable law.