Principal Network Engineer

LSEG (London Stock Exchange Group); St. Louis (MO); On-site; USD 100,000 - 130,000; Full time

Benefits offered by this job

Healthcare

Retirement planning

Paid volunteering days

Wellbeing initiatives

Job summary

Join LSEG (London Stock Exchange Group) as a principal network engineer based in St. Louis, MO. You will be responsible for the support and reliability of the entire LSEG ecosystem, including networks, platforms, and services. The position emphasizes expertise in Cisco WAN technologies, multicast protocols, and network automation.

Your role involves analyzing data, providing technical support, and leading system upgrades. LSEG offers tailored benefits including healthcare and retirement planning, supporting your well-being and professional growth.

Qualifications

• Proven experience in network products and services, specifically Cisco WAN technologies.
• Expertise in LAN, WAN, MPLS, and related technologies.
• Understanding of low-latency technologies in financial environments.

Responsibilities

• Ensure operational stability of the LSEG global network.
• Develop dashboards for near real-time network status.
• Lead upgrades and coordinate efforts with internal teams.

Skills

Cisco WAN technologies

Multicast protocols

Network automation

Agile methodologies

Packet analysis

Education

Bachelor's degree in a technology-related field

Tools

JIRA

Job description

Role Summary

As a highly skilled principal network engineer, you will be responsible for the ongoing support and reliability of all components within the LSEG ecosystem, encompassing platforms, networks, applications, and services. In this role, you will provide escalation support for important network services, ensuring the operational stability and performance of the LSEG global network. You will also find opportunities and improvements, then define requirements for software automation to enhance the features, functions and reliability of the network, underpinning LSEG’s digital platforms.

What You Will Be Doing

We will play a pivotal role in designing, building, and maintaining systems, software, and applications across various domains, ensuring the highest quality outcomes. We will independently make technical design and amendment decisions, effectively leading the workload.

By analysing data and understanding business requirements, we will translate them into technical specifications, ensuring alignment with infrastructure and network capacity needs. We will develop dashboards to provide near real‑time network status.

Collaborating closely with network operations and service teams, we will provide in-depth technical support and guidance for all multicast‑ and WAN‑related issues and implementations. This role requires a proactive problem solver with a deep understanding of multicast protocols, WAN infrastructure, and a passion for delivering exceptional service.

When necessary, we will lead upgrades, coordinating efforts with internal teams and third parties. Building accurate documentation and monitoring system performance are essential to support business activities and continuous improvement.

We will support the deployment of engineering patterns and contribute to creating solutions by coordinating design requirements to be automated, tested and released.

What You Will Bring

• Proven experience in network products and services, with specific focus on Cisco WAN technologies, including ASR and Nexus9K.
• Expertise in LAN, WAN, MPLS, VPLS, LDP, GRE, BGP, OSPF, and ISIS within a VRF context for L2/L3VPN services, Traffic Engineering, and RSVP.
• Comprehensive knowledge of multicast concepts, including PIM‑SM, PIM‑SSM, IGMP, MVPN, and MLDP.
• Proficiency in product‑aligned, service‑focused work, with a solid grasp of network automation, SRE, and DevOps or equivalent experience.
• Working with Agile methodologies (Scrum, Kanban) and project management tools like JIRA.
• Excellent skills in network packet analysis and packet capture tools for troubleshooting.
• Familiarity with load balancing technologies, TCP/IP, and multicast in internet environments.
• Understanding of low‑latency technologies commonly used in the financial sector.
• Experience in Data Centre Networking, including Software‑Defined Networking (SDN), Cisco ACI, VxLAN, and related technologies.
• Proficiency in Service Management processes, preferably with ITIL knowledge.
• Excellent spoken and written English skills, enabling meaningful collaboration.

Preferred Skills and Experience

• A bachelor's degree or equivalent experience in a technology‑related field is essential.
• CCIE certification, is highly desirable (including actively pursuing accreditations).
• Significant experience in technology‑focused positions is crucial.
• Extensive knowledge of routing and switching protocols.
• Substantial experience (5+ Years) as a WAN Network Engineer.
• Exposure to Network Service Providers or the Financial Services Sector.

Career Stage

Manager

Benefits

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

Equal Opportunities

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.