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Senior Technical Lead

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Onsite

Senior Technical Lead

London Stock Exchange

Senior Technical Lead

Skills

SQL QueriesReactTypescriptPythonPostgreSQLAWS LambdaGitLabSwagger/OpenAPIAIAWSGitHubWorkdayTerraform

1 month ago

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Important information


Location:

London, UK

Work mode:

Onsite

Published on:

28 September 2026

What they need


Who you are

  • 7+ years of professional software engineering experience
  • Strong expertise in system design, distributed systems, and relational data modelling
  • Solid experience building and operating cloud-native applications on AWS
  • Ability to write and maintain infrastructure as code (Terraform or equivalent)
  • Experience designing test strategies at multiple levels of the testing pyramid
  • Proficiency with AI development tooling and a clear understanding of how to use AI to accelerate delivery while maintaining quality
  • Strong debugging skills across distributed systems
  • Basic understanding of financial services or capital markets
  • Effective collaboration and the ability to communicate technical decisions to non-technical audiences

What the job involves

  • We're seeking a Senior Software Engineer to join the team building next-generation distribution capabilities for our index products
  • You'll be delivering index data to the global financial community across multiple channels including APIs, cloud data platforms, file-based delivery, and AI-native protocols
  • Reliability, security, and data quality are non-negotiable as we build out scalable, cloud-native infrastructure
  • The ideal candidate is a self-sufficient, technically excellent engineer who can lead through architectural clarity, thorough code review, and hands-on delivery
  • You combine strong expertise in system design, data modelling, and debugging with genuine passion for how AI tooling is redefining software engineering
  • This is an individual contributor role where you will lead through the quality of your thinking and your engineering standards
  • AI-First Engineering This team operates with an AI-first approach
  • We expect hands-on experience with AI development tooling: terminal-based agents, AI-augmented IDEs, and automated workflows
  • You are ultimately accountable for production quality, security, and correctness
  • This means owning infrastructure review, security validation, system observability, and operational guardrails
  • Design, build, and scale cloud-native distribution infrastructure with high resilience and performance requirements
  • Own system design and data modelling for sophisticated, multi-schema relational databases serving dynamic data workloads
  • Develop and maintain infrastructure as code, ensuring environments are reproducible, version-controlled, and secure
  • Design and implement test strategies including integration, contract, and end-to-end validation
  • Build secure, well-documented APIs and data delivery services for institutional financial clients
  • Lead technical direction through architectural guidance, code review, and pairing
  • Partner with product, operations, and client-facing teams to translate requirements into robust technical solutions
  • Development: TypeScript, Angular/React, Python, SQL, OpenAPI
  • Cloud: AWS (Lambda, API Gateway, S3, SQS, SNS, Aurora, and others as required)
  • Databases: PostgreSQL, Apache Iceberg, DynamoDB, VectorDB (e.g. ChromaDB)
  • IaC and CI/CD: Terraform, AWS CLI, GitLab
  • AI Development: Agentic AI tooling (e.g. GitHub Copilot, Claude Code)

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