Full-Time

Principal Network Engineer

Posted on 11/1/2025

LSEG

LSEG

10,001+ employees

Global financial market infrastructure and data

No salary listed

Company Does Not Provide H1B Sponsorship

St. Louis, MO, USA

In Person

Category
IT & Security (1)
Requirements
  • 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.
Responsibilities
  • 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.
Desired Qualifications
  • 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.

LSEG provides global financial market infrastructure and data across the full value chain. It operates through Data & Analytics, FTSE Russell, Risk Intelligence, Capital Markets, and Post Trade, offering data, indices, risk tools, trading, clearing and settlement services, and regulatory support. It differentiates itself by delivering an integrated, end-to-end suite that spans pre-trade analytics to post-trade processing with a global footprint. Its goal is to grow long-term value for shareholders and customers by leveraging its diversified platform and international reach.

Company Size

10,001+

Company Stage

IPO

Headquarters

London, United Kingdom

Founded

1801

Simplify Jobs

Simplify's Take

What believers are saying

  • ASX partnership upgrades ASX 24 platform in 2026 for higher volumes.
  • FY2025 delivered 7.6% revenue growth and 50% EBITDA margins.
  • £3B buyback by February 2026 boosts shareholder returns.

What critics are saying

  • Elliott Management forces £3B buyback, diverting funds from AI investments.
  • AI chatbots erode Data & Analytics pricing power in 12-24 months.
  • ASIC imposes $150M charge on ASX, delaying LSEG's 2026 rollout.

What makes LSEG unique

  • LSEG's proprietary datasets and embedded infrastructure defy AI replacement.
  • Workspace Top 50 tracks global search trends on Workspace platform.
  • Model-as-a-Service marketplace integrates Societe Generale models with Microsoft Copilot.

Help us improve and share your feedback! Did you find this helpful?

Benefits

Health Insurance

401(k) Retirement Plan

Paid Vacation

Wellness Program

Flexible Work Hours

Remote Work Options

Company News

FinTech Global
Apr 2nd, 2026
LSEG launches Workspace Top 50 to track market trends.

LSEG launches Workspace Top 50 to track market trends. April 2, 2026 LSEG, the London Stock Exchange Group, has launched the Workspace Top 50, a new monthly feature revealing the most searched commodities and equities by financial professionals globally. The Workspace Top 50 is published directly within LSEG's Workspace platform and shared via LinkedIn, offering users a monthly snapshot of the most searched commodities and equities worldwide. The feature surfaces aggregated search behaviour to highlight which market themes are gaining traction, which are fading, and where global attention is shifting across asset classes. The tool is designed to complement the broader depth of data and content already available within Workspace, providing an at-a-glance view of market sentiment as it develops - from macro-driving commodities to high-momentum equities. Users can already explore six months of historical search trends via a dedicated Workspace page, with new Top 50 updates published every month. LSEG global head of Workspace and interim co-head of Workflows Nej D'Jelal said, "Questions asked by finance professionals are one of the clearest indicators of what matters most to the market right now. The Workspace Top 50 brings those insights together in one simple, transparent view, helping our users stay ahead of developing themes and sentiment." Enjoying the stories? Investors. The following investor(s) were tagged in this article.

Semafor
Mar 27th, 2026
LSEG CEO faces activist pressure as AI fears hit shares, announces $3.8B buyback

London Stock Exchange Group CEO David Schwimmer warns that the Middle East conflict poses a "real test" for investor resilience, as markets face multiple challenges including AI disruption concerns, private credit risks and record public debt levels. Speaking after activist hedge fund Elliott Management took a significant stake in LSEG, Schwimmer defended his long-term strategy whilst announcing a £3 billion share buyback. The company structured the repurchase to maintain "healthy strategic flexibility" for acquisitions, keeping net debt around two times EBITDA. Schwimmer dismissed concerns that AI chatbots will replace LSEG's data business, noting the company's proprietary datasets and embedded infrastructure remain essential. He highlighted a cultural shift, flipping the ratio of contractors to in-house engineers from 60:40 to 40:60, enabling faster product rollouts whilst improving costs.

Business Wire
Mar 23rd, 2026
BBH receives the 2026 LSEG Lipper Fund Award for Fixed Income.

BBH receives the 2026 LSEG Lipper Fund Award for Fixed Income. NEW YORK-(BUSINESS WIRE)-Brown Brothers Harriman (BBH) is pleased to announce it has been awarded the Asset Class Group Award for Fixed Income at the 2026 LSEG Lipper Fund Awards banquet. This award recognizes superior firm-wide results in fixed income performance and was awarded to only one firm - out of 91 in the category - in the United States. It is for performance over the three-year period ending in November 2025. Presented by London Stock Exchange Group, the Lipper Fund Awards have honored funds and fund management firms for more than three decades, recognizing those that have delivered consistently strong risk-adjusted performance. The award reflects the strength of BBH's disciplined research-driven investment approach and the deep expertise of our fixed income team. At BBH, we focus on process over predictions and on purchasing durable credits only when they are available at attractive yields. We avoid investments that require predictions for satisfactory outcomes. "This award is a testament to our process and our people," said BBH Partner and Portfolio Manager Neil Hohmann. "Our process is executed by a long-tenured leadership and investment team. Our fixed income investment teams all apply the same value-focused process and collaborate across sectors, creating consistency and continuity." "The 2026 LSEG Lipper Fund Awards mark another volatile three-year stretch for global markets. The managers we're recognizing have guided investors through an environment where base rates have spiked, then diverged, as central banks navigated new and challenging inflationary landscapes, alongside uneven global growth, and heightened geopolitical risk...We applaud the 2026 LSEG Lipper Fund Award winners for delivering outperformance and the steady reassurance of consistency through changing market conditions," said Otto Christian Kober, Head of Lipper Research, LSEG Data & Analytics. About Brown Brothers Harriman and Brown Brothers Harriman Credit Partners, LLC Brown Brothers Harriman is a global financial services firm that has partnered with clients to help them achieve their vision of success for over 200 years. Today, BBH is the trusted and preferred advisor and investor for private businesses and their owners, wealthy families, and sophisticated institutional investors. Through our Capital Partners line of business, we offer multi-family office and trust solutions, investment management, private equity, and corporate advisory and banking services. Brown Brothers Harriman Credit Partners, LLC (BBH Credit Partners), a direct subsidiary of BBH, offers taxable fixed income strategies which seek to grow and preserve investor capital through opportunistic credit investing, focusing on durable credits available at attractive yields. A disciplined focus on credit durability enables consistent decision-making across market cycles. About LSEG Lipper Fund Awards For more than 30 years and in over 17 countries worldwide, the highly-respected LSEG Lipper Awards have honored funds and fund management firms that have excelled in providing consistently strong risk-adjusted performance relative to their peers and focus the investment world on top-funds. The merit of the winners is based on entirely objective, quantitative criteria. This coupled with the unmatched depth of fund data, results in a unique level of prestige and ensures the award has lasting value. Renowned fund data and proprietary methodology is the foundation of this prestigious award qualification, recognizing excellence in fund management. Find out more at www.lipperfundawards.com. The LSEG Lipper Fund Awards, granted annually, highlight funds and fund companies that have excelled in delivering consistently strong risk-adjusted performance relative to their peers. The LSEG Lipper Fund Awards are based on the Lipper Leader for Consistent Return rating, which is a risk-adjusted performance measure calculated over 36, 60 and 120 months. The fund with the highest Lipper Leader for Consistent Return (Effective Return) value in each eligible classification wins the LSEG Lipper Fund Award. For more information, see lipperfundawards.com. Although LSEG makes reasonable efforts to ensure the accuracy and reliability of the data contained herein, their accuracy is not guaranteed by LSEG Lipper. Past performance does not guarantee future results. Investing in the bond market is subject to certain risks including market, interest-rate, issuer, credit, maturity, call and inflation risk; investments may be worth more or less than the original cost when redeemed. Bond prices are sensitive to changes in interest rates and a rise in interest rates can cause a decline in their prices. For more complete information, visit www.bbhfunds.com or contact your investment professional for prospectuses. You should consider a Fund's investment objectives, risks, charges and expenses carefully before you invest. Information about these and other important subjects is in the Fund's prospectus, which you should read carefully before investing. Shares of the Fund are distributed by ALPS Distributors, Inc. and is located at 1290 Broadway, Suite 1000, Denver, CO 80203. More News From Brown Brothers Harriman NEW YORK-( BUSINESS WIRE )-Private business owners are placing renewed focus on passing down their wealth and businesses. However, new research from Brown Brothers Harriman (BBH) reveals that many owners struggle with when to tell the next generation about their plans and how best to prepare them. The survey highlights gaps in succession planning, mixed confidence in next-gen readiness, and continued emphasis on growth, even as owners reconsider dividend policies and forego equity to maintain b... PHILADELPHIA-( BUSINESS WIRE )-Brown Brothers Harriman & Co. (BBH) is pleased to announce the addition of Katie Casey to the Multi-Family Office in Philadelphia. In her new role, Katie serves as a trusted advisor to private business owners, ultra-high-net-worth individuals, and their families, delivering expert guidance in investing, philanthropy, private banking, and wealth planning. "We are excited that Katie has joined our team here in Philadelphia. Her experience will make her a tremend... NEW YORK-( BUSINESS WIRE )-Auramet International, Inc. ("Auramet"), a leading precious metals merchant, is pleased to announce that it has closed a $350 million syndicated revolving credit facility (the "Facility") led by Macquarie Group ("Macquarie"). Macquarie's Commodities and Global Markets business acted as Mandated Lead Arranger, Bookrunner and Administrative Agent for the Facility, which was well oversubscribed. The Facility complements Auramet's various bilateral banking facilities. Aur... Brown Brothers Harriman. Release Versions

Asset Servicing Times
Mar 19th, 2026
OSTTRA makes four key appointments.

OSTTRA makes four key appointments. 19 March 2026 UK Reporter: Hansa Tote Image: RISKI_STUDIO/stock.adobe.com OSTTRA has announced four key appointments to its leadership and product teams to support its strategy of post-trade transformation. Nathan Ondyak joins as chief commercial officer, Peter Altero as chief business development officer, Chris Licini as buy side strategic relationship manager, and Christian Kjaeldgaard joins as product design director. The news follows the acquisition of the firm by private equity company KKR in October last year, and builds on the further investment from a consortium of global banks announced in February 2026. The new hires will work closely with OSTTRA partners and clients to accelerate innovation and the build-out of new services that bring new capital and operational efficiencies to complex workflows, extending OSTTRA services across asset classes. Ondyak spent over 14 years at LSEG, where he led the expansion of the firm's post-trade capabilities, and most recently served as the CEO of LSEG Post Trade Services (TradeAgent) and SwapAgent. Prior to LSEG, Ondyak held senior product and sales management positions at Markit. Altero returns to OSTTRA from LSEG, where he spent three years as North America head of TradeAgent, SwapAgent, and Quantile, responsible for advancing LCH's post-trade operations outside of its core clearing business. Licini held a leading role in developing strategic customer relationships at LSEG for more than 14 years, focusing on the buy side community. Kjaeldgaard previously developed post-trade strategy and solutions across the SwapAgent offering at LSEG, having formerly played an important role in the evolution of MarkitWire in the product management team at Markit. Commenting on the appointments, Guy Rowcliffe and John Stewart, co-CEOs of OSTTRA, state: "Nathan, Peter, Chris, and Christian bring deep expertise and proven track records of innovation and collaboration across its industry. "This perfectly complements the in-house expertise we already have at OSTTRA. Their appointments will significantly accelerate our ambition to transform post-trade this year and beyond, turning shared infrastructure into shared benefit." Ondyak says: "I am excited to be joining OSTTRA at this pivotal moment and look forward to contributing significantly to writing the next chapter in the evolution of the post-trade landscape. "Our strategy focuses on working with the industry to connect and evolve our robust, trusted infrastructure with the new workflows and technologies that will define tomorrow's financial markets." Next people moves article NO FEE, NO RISK 100% ON RETURNS If you invest in only one asset servicing news source this year, make sure it is your free subscription to Asset Servicing Times

InvestorDaily
Mar 5th, 2026
ASX taps LSEG to modernise derivatives trading infrastructure

ASX taps LSEG to modernise derivatives trading infrastructure. The ASX has partnered with the uk's LSEG Markets Technology to overhaul its ASX 24 derivatives platform, aiming to boost resilience and support future growth. Reading Time: 3 mins read The Australian Securities Exchange (ASX) has signed an agreement with LSEG Markets Technology to upgrade the technology underpinning its ASX 24 derivatives trading platform, as the exchange seeks to strengthen system resilience and support future market expansion. ASX 24 is the primary venue for trading Australian and New Zealand interest rate, equity and commodity futures and options. The market operates some of the longest trading hours globally and supports a broad, liquid trading community within Australia's AAA-rated financial system. Through the partnership, LSEG Markets Technology will deliver a new trading platform designed to handle higher volumes and faster execution while reducing operational risk. The system is expected to provide the infrastructure needed for ASX 24 to expand its product offering and respond to increasingly complex global derivatives markets. LSEG's trading infrastructure, part of the London Stock Exchange Group which runs the FTSE, already supports a range of major exchanges and financial markets around the world, including platforms in Brazil, Qatar, Argentina and Singapore. According to the ASX, the two parties will now spend 2026 working on the design, testing and migration of the new system, alongside preparations with market participants to support the transition. Once implemented, the upgrade is expected to support future developments in liquidity, transparency and product innovation across one of the world's most actively traded interest-rate derivatives markets. Bruce Kellaway, global head of LSEG Markets Technology, said the collaboration would help strengthen the underlying infrastructure supporting derivatives trading. "ASX 24 plays a vital role not only in Australia but across global derivatives markets. We are proud to partner with ASX in delivering next-generation trading infrastructure that enhances resilience, strengthens performance, and enables innovation," Kellaway said. "LSEG Markets Technology underpins major exchanges around the world, and this partnership reinforces our shared commitment to maintaining strong, transparent, and globally competitive markets while demonstrating leadership in delivering world-class markets technology at scale." Farid Sammur, head of markets technology at ASX, said modernising the platform was an important step to ensure the exchange's derivatives market continues operating efficiently. "Upgrading ASX 24's trading platform is a critical investment in the long-term resilience and performance of Australia's derivatives markets platform. Our focus is on running a fast, fair, and reliable environment that enables our customers to manage their risk and discover prices," Sammur said. "This upgrade positions ASX 24 with the infrastructure to innovate faster, continue to respond to changing participant needs, and maintain a high standard of operational excellence in our market." The move follows a series of reform proposals put forward by an ASIC inquiry after it uncovered deep structural failings. Problems including a focus on short-term financial performance and shareholder returns that compromised its obligations to operate critical national market infrastructure, a lack of vision necessary for the ASX's critical role and governance structures that do not ensure the independence of its Clearing and Settlement subsidiaries and their required levels of investment. The planned reforms include: * Strengthening the independence and governance of ASX's Clearing and Settlement Facilities boards * A strategic reset of ASX's transformation program 'Accelerate', with clear milestones and accountability for delivery * The imposition of an additional $150 million capital charge on ASX Limited to ensure ASX maintains robust financial resources until remediation is complete * A commitment to stronger leadership * ASIC and the RBA will step up their review to uplift their joint supervisory model.

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