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Principal Network Engineer

Jobs via eFinancialCareers
St Louis, MO Full Time
POSTED ON 2/9/2026 CLOSED ON 3/8/2026

What are the responsibilities and job description for the Principal Network Engineer position at Jobs via eFinancialCareers?

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 3rd line support to the Operations and Project Delivery (Implementation) functions, ensuring operational stability and ongoing adaptability of the LSEG global network. Key responsibilities are creating and maintaining software automation that provides the reliability and availability of digital platforms and their software delivery pipelines.

Role Responsibilities

Supports the technology lifecycle through the design, build and maintenance of systems

Administer LSEG network services, ensuring applications and services perform against baselines 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 handles workloads

Crafts, reviews and maintains documentation, complaint 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, with emphasis on performance, resilience and operability

Gets involved into design work in the infrastructure and network domain, providing innovative solutions,

Support day to day network operational issues and manage enterprise network.

Required Skills & Experience

Rich experience in identifying and solving network issues, end-to-end.

Significant experience of routing and switching and Routing protocols (CCNP / CCIE preferred)

Significant experience in network operations, project delivery and engineering

Excellent experience in managing enterprise networks

Good in handling DDI/infloblox(L1 Support)

Excellent in handling and managing Wireless infra.

Significant experience with network technologies, including Cisco, Juniper, Arista, Fortinet & F5 - at least 2 of these

Excellent 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 & function

Basic knowledge of load balancing technologies, including application delivery control

Good knowledge of network packet captures, tooling and ability to analyse

Good knowledge of datacenter networking including Software Defined Networking, Cisco ACI, VxLAN

Good scripting and automation experience (Python, Ansible, Terraform, GIT, GitLab, Rundeck, etc)

Outstanding interpersonal skills, both spoken (verbal) and written English language abilities

Required Skills & Experience

Previous experience working in/with Architecture / Engineering / network operation teams

Previous experience working with banking infra and supporting financial institution network

Experience in Cloud, specifically cloud networking standard methodologies

Proven exposure to financial sector, including low latency (trading) environments

Experience in managing and handling Enterprise network.

Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you.

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership , Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.

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.

You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence . Colleagues can get involved through fundraising and volunteering.

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

Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it's used for, and how it's obtained, your rights and how to contact us as a data subject .

If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.

Salary.com Estimation for Principal Network Engineer in St Louis, MO
$117,607 to $138,399
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