Senior Technical Lead - Real Time Platform

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 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.

• 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.

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
Infrastructure as Code & CI/CD: Terraform, AWS CLI, GitLab
AI Development: Agentic AI tooling (e.g. GitHub Copilot, Claude Code)

• 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.
• Nice to have 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.

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

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. We can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.