Senior Reliability Engineer - Hosting & Connectivity in London

You’ll work at the heart of financial technology, leveraging Arista and Cisco networking, F5 load balancing, and advanced firewall solutions (Palo Alto, Fortinet) to maintain secure, high-speed connectivity. Your expertise with Solace messaging bus and performance monitoring tools like Netscout nPoint, Corvil, and cPacket will help guarantee flawless data flow across trading environments. This is an opportunity to shape infrastructure that underpins billions in daily transactions—where precision and reliability are paramount.

What You’ll Be Doing

• Performing installations, upgrades, migrations, and integrations of a variety of products aligned to globally consistent methodologies with moderate guidance.
• Installing and maintaining networking equipment using automation tools.
• Executing the development and implementation of solutions to appropriate standards with moderate guidance.
• Supporting initiatives for process and service improvements within the team.
• Supporting the maintenance of the integrated solution provided to clients with moderate guidance.
• Supporting members of the team to deliver on strategic priorities, with a working knowledge of basic concepts and procedures.
• Handling client queries related to professional services post‑implementation with moderate guidance.
• Supporting the technology lifecycle through the design, build and maintenance of systems, software and applications to ensure the highest quality outcomes across the domains.
• Working well as part of a dedicated project team – providing valuable input and considering business impact of decisions.
• Working well with network architects bringing designs to reality.
• Translating business requirements into technical requirements and infrastructure and network capacity needs by sourcing data and undertaking appropriate analysis.
• Ensuring relevant reporting documentation is completed and complies with internal and external standards.
• Scheduling and coordinating capacity/network upgrades, liaising with other areas of the business as needed to ensure service level objectives are met.
• Managing upgrades and coordinating internal and third parties where required.
• Creating accurate documentation and monitoring system performance to effectively contribute to business and continual improvement activities.
• Overseeing design work in the network domain and contributing to creating solutions.

What You’ll Bring

• Bachelor’s degree or equivalent in an IT related discipline.
• Extensive knowledge of routing and switching protocols.
• Demonstrable experience in network operations and project delivery with ideally Cisco, Juniper, Arista, Fortinet, Palo Alto.
• Strong network routing and switching skills including LAN, WAN, HSRP, NAT, MPLS, VPN, GRE, BGP and OSPF.
• Good knowledge of multicast including IGMP, RP and PIM.
• Knowledge of low latency and associated technologies as deployed in the financial sector.
• Excellent knowledge of network packet analysing and packet capture tools.
• Good knowledge and experience with Data Centre Networking including SDN, Cisco ACI, VxLAN, AVD, Fortimanager.
• Experience in Cloud and good understanding of network security, including best practices.
• Understanding of load balancing technologies, TCP/IP, Multicast, and internet environments.
• Good knowledge of required Service Management process, ideally ITIL knowledgeable (Service Now).
• Good scripting and automation experience (Python & Ansible).

Benefits

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

EEO Statement

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants’ and employees’ religious practices and beliefs, as well as mental health or physical disability needs.