Senior Technical Lead - Real Time Platform

About the role

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: FTSE Russell (LSEG) is building the real-time platform that powers global index calculation across equity, fixed income, and multi-asset markets. We're looking for a hands-on Senior Technical Lead to help modernise and scale this platform - a cloud-native, low-latency system that operates at global scale and underpins critical investment products used worldwide. This is an individual contributor leadership role . You'll lead through architecture, engineering quality, and delivery - designing resilient, event-driven systems, shaping technical direction, and raising standards across the team. You'll work on systems where performance, data quality, and reliability are non-negotiable , while leveraging modern cloud (AWS) and AI-assisted development tooling to accelerate delivery without compromising control.

Responsibilities

• Design and build real-time, event-driven systems that calculate and distribute index data with low latency and high reliability.
• Own platform architecture and engineering quality , leading through hands-on delivery, code review, and clear technical direction.
• Scale and operate a cloud-native platform on AWS , ensuring resilience, observability, and performance under real market conditions.
• Define and evolve data models and pipelines for market and reference data, with strong focus on accuracy, auditability, and control.
• Drive engineering standards and modernisation , using AI-assisted tooling and automation to improve delivery speed without compromising quality.
• Tech Stack
• Development: Java, C#,, Python, SQL, OpenAPI.
• Cloud: AWS (Lambda, API Gateway, S3, SQS, SNS, Aurora, and others as required).
• Databases: Sybase ASE, Sybase IQ, Aurora Postgres.
• IaC and CI/CD: Terraform, AWS CLI, GitLab.
• AI Development: Agentic AI tooling (e.g. GitHub Copilot, Claude Code)

Requirements

• Strong software engineering background, with experience designing and building distributed, event-driven systems.
• Proven ability to own system design and architecture , balancing performance, scalability, and reliability.
• Hands-on experience building and operating cloud-native applications on AWS.
• Solid understanding of data modelling and relational databases in production systems.
• Experience with infrastructure as code (e.g. Terraform) and modern CI/CD practices.
• Demonstrated ability to lead through engineering quality - code reviews, testing strategy, and raising technical standards.
• Experience working on low-latency or real-time systems.
• Exposure to financial services, market data, or index products.
• Practical use of AI-assisted development tooling to improve engineering productivity.
• How We Work
• The Real Time team builds and operates the platform that calculates, manag

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