We are looking for to lead the next evolution of LSEGs realtime market data platform (RTMDS) and associated lowlatency infrastructure. This role is central to driving the technical vision, architectural strategy, and engineering excellence required to operate one of the worlds largest realtime market data distribution platforms.

You will partner with engineering squads, product leaders, and infrastructure teams to deliver scalable, resilient, observabilityrich services that underpin missioncritical market data distribution globally.

Key Responsibilities

Leadership & Stakeholder Engagement

• Serve as a senior technical leader representing RealTime Engineering across LSEG.

• Partner with key stakeholders, including Product, Engineering, Operations, and Security to align architectural decisions with enterprise strategy.

• Mentor architects and senior engineers, fostering a strong culture of design excellence, datadriven decisionmaking, and ownership.

Infrastructure & Capacity Engineering

• Drive infrastructure modernisation across compute and network layers, including hardware lifecycle optimisation and vertical/horizontal scaling architecture.

• Guide adoption of automation, observability, and SRE principles to improve resiliency, fault isolation, and recovery.

• Work with capacity management teams to ensure adequate platform headroom.

LowLatency Network Architecture

• Lead architectural direction for ultralowlatency network connectivity supporting realtime distribution.

• Oversee design validation in vendor labs, including NIC tuning, kernel bypass techniques, routing optimisation, telemetry instrumentation, and packet capture strategies.

• Partner with Network Engineering on deterministic networking, congestion mitigation, timing synchronisation, and microbursttolerant path design.

Exchange Feed Connectivity & Market Access

• Define architectural patterns for exchange feed capture, decoding, enrichment, and firsthop distribution across global equities, derivatives, FX, fixed income, and crypto markets.

• Ensure ingestion resiliency through multipath routing, circuit diversity, colo architectural best practices, and feedhandler performance tuning.

• Lead evaluation and adoption of new exchange protocols, depth expansions, multicast upgrades, fastpath designs, and emerging transport mechanisms.

Platform Modernisation

• Define and lead a significant section of the strategy and design for a major replatform of LSEG Real-Time's application estate to private cloud

• Introduce containerisation for low latency, high performance market data applications

• Drive adoption of DevSecOps via platform automation, inclusive of use of industry-standard automation tooling, as well as generative AI.

Observability, Performance & Operational Excellence

• Collaborate with the RealTime Unified Observability team to ensure all components expose actionable metrics, traces, logs, and health checks.

• Drive systemwide performance optimisation initiatives including CPU reduction, memory efficiency, latency tuning, and network traffic reduction strategies.

• Strengthen DevSecOps practices by embedding buildrun accountability into engineering workflows.

RealTime Managed Distribution System Architecture (RTMDS)

• Own the technology platform roadmap for RTMDS, covering application and infrastructure strategy.

• Define architecture for nextgeneration realtime APIs and distribution methods, aligned to customer performance and throughput requirements.

• Lead the evolution of internal and external connectivity models including RTDS migration patterns, LSEG Real-Time API, integration, and cloudaligned delivery

Required Experience & Skills

• Extensive experience designing and operating largescale, lowlatency, highthroughput distributed systems.

• Deep knowledge of market data platforms (e.g., RTDS, exchange feedhandlers, exchange protocols and connectivity).

• Strong background in network engineering, realtime telemetry, and deterministic networking.

• Proven experience leading major transformation initiatives (replatform projects, cloud migrations and modernisation).

• Proficiency with observability platforms and SREoriented engineering practices.

• Ability to influence and collaborate across senior business and technology stakeholders.

• Experience with RWF/RTSDK, compression strategies (e.g., delta, binary packing), and entitlement systems.

• Familiarity with container orchestration and infrastructureascode frameworks, especially Kubernetes

• Strong knowledge of capital markets and real time market data

• Understanding of generative AI

• STEM degree, or equivalent industry experience

What Youll Gain

• Opportunity to shape the future of LSEGs global realtime data platform.

• Influence over architecture that supports billions of market data updates per day.

• An engineering leadership role at the centre of one of the industrys leading global market data 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 anyones 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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Location: GBR-Nottingham-1 Chapel Qtr, London, United Kingdom

Time Type: Full time