Lead Engineer - Connectivity LAN

ABOUT US:

LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. It’s how we’ve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services – and our open-access model – we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.

LSEG is headquartered in the United Kingdom, with significant operations in 70 countries across EMEA, North America, Latin America and Asia Pacific. We employ 25,000 people globally, more than half located in Asia Pacific. LSEG’s ticker symbol is LSEG.

OUR PEOPLE:

People are at the heart of what we do and drive the success of our business. Our culture of connecting, creating opportunity and delivering excellence shape how we think, how we do things and how we help our people fulfil their potential. We embrace diversity and actively seek to attract individuals with unique backgrounds and perspectives.  We break down barriers and encourage teamwork, enabling innovation and rapid development of solutions that make a difference. Our workplace generates an enriching and rewarding experience for our people and customers alike. Our vision is to build an inclusive culture in which everyone feels encouraged to fulfil their potential.

We know that real personal growth cannot be achieved by simply climbing a career ladder – which is why we encourage and enable a wealth of avenues and interesting opportunities for everyone to broaden and deepen their skills and expertise. As a global organisation spanning 70 countries and one rooted in a culture of growth, opportunity, diversity and innovation, LSEG is a place where everyone can grow, develop and fulfil your potential with meaningful careers.

ROLE SUMMARY:

This is an exciting opportunity to join a high impact engineering team responsible for designing and evolving LSEG’s mission critical LAN and data centre connectivity platforms. You will be working at the forefront of enterprise and low latency LAN network design, delivering resilient, best in class architectures that underpin global real time trading and market data systems. 

As part of the specialised network connectivity and hybrid cloud engineering teams, you will help shape and deliver high performance network services across on premise and hybrid cloud environments. The team plays a central role in the firm’s long term transformation, where innovation, technical depth, and continuous learning are core principles. 

We are looking for engineers who thrive in complex environments, enjoy solving high performance networking challenges, and want to influence the evolution of next generation connectivity platforms. 

WHAT YOU'LL BE DOING:

LAN & Connectivity Engineering 

• Lead the design, optimisation, and evolution of LAN and data centre networking architectures, including switching, routing, traffic engineering, and segmentation. 

• Deliver low latency, deterministic connectivity solutions optimised for real time trading and market data workloads. 

• Develop and maintain network topologies, high availability designs, and reference architectures for use across LSEG environments. 

• Implement and validate LAN features such as EVPN/VXLAN fabrics, QoS, multicast, and performance tuned network services. 

Technical Influence & Collaboration 

• Serve as a LAN design specialist, guiding engineering teams and contributing to architectural forums, design reviews, and platform roadmap discussions. 

• Partner closely with infrastructure, application, and cloud engineering teams to define connectivity requirements and support workload onboarding. 

• Provide consultancy and technical direction to teams integrating their services into LAN or hybrid network environments. 

Operational Excellence 

• Lead troubleshooting and root cause analysis activities across complex LAN, campus, and data centre connectivity environments. 

• Contribute to improvements in observability, monitoring, network telemetry, and performance diagnostics. 

• Evaluate emerging LAN technologies, vendors, and design innovations, presenting findings to senior engineering stakeholders. 

Ways of Working 

• Work effectively within an agile, iterative delivery model. 

• Balance multiple priorities across a dynamic, fast moving environment. 

• Champion high quality engineering standards and ensure designs support resilience, scalability, and security. 

WHAT YOU'LL BRING:

• Strong experience in LAN and data centre network design at enterprise scale. 

• Deep understanding of Layer 2/3 architectures, including STP variants, MLAG, VLANs, VXLAN/EVPN, BGP, OSPF, and ECMP. 

• Proven background in building low latency, high performance network environments (preferably financial services or similarly demanding workloads). 

• Strong knowledge of network segmentation, policy enforcement, redundancy design, and high availability strategies. 

• Solid understanding of Linux networking, packet flows, NIC capabilities, traffic shaping, and performance tuning. 

• Understanding of modern container technologies, particularly Kubernetes. 

• Awareness of container networking concepts (e.g., CNI plugins), and how workloads consume network resources in hybrid cloud or on-prem container environments. 

• Familiarity with Gitbased workflows, CI/CD principles, or automation tooling (Terraform, Ansible, scripting languages). 

• Strong communication skills with the ability to translate complex LAN design topics to technical and nontechnical stakeholders. 

• Excellent analytical and problem solving skills across layered network and infrastructure environments. 

• Comfortable working in a fastpaced environment with changing priorities. 

If you are passionate about LAN engineering, low latency performance tuning, and high impact infrastructure delivery, this role offers a unique chance to make a significant contribution to LSEG’s global platforms. 

Career Stage:

London Stock Exchange Group (LSEG) Information:

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.

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