Senior Software Engineer (Real-Time)

London Stock Exchange; Greater London; On-site; GBP 60,000 - 95,000; Full time

Job summary

London Stock Exchange is seeking a Software Engineer in its Real-Time Engineering organisation to help build a low-latency market data platform that processes billions of price updates daily. You will develop APIs, telemetry pipelines and synthetic monitoring services to show how data reaches customers worldwide, working with seasoned engineers to deliver production-grade software.

This is an early-career, hands-on role focused on observability, cloud-native engineering and performance.

Qualifications

• Strong software engineering fundamentals and willingness to learn.
• Ability to write perf-oriented code in Go, C++, or Rust.
• Familiarity with APIs, Git and modern software development practices.

Responsibilities

• Build APIs, telemetry pipelines and synthetic monitoring services.
• Improve observability across a globally distributed platform.
• Collaborate with engineers to deliver production-grade software.
• Develop software that ingests and processes market data from multiple exchanges.
• Contribute to telemetry and data-processing pipelines to ensure performance and reliability.

Skills

Go

C++

Rust

Observability

Distributed systems

Tools

Git

CI/CD

Containers

Job description

• As a Software Engineer in LSEG’s Real-Time Engineering organisation, you will work on a global low-latency market data platform that sends billions of price updates per-day around the globe
• In this role, you will build APIs, telemetry pipelines and synthetic monitoring services that show how reliably and quickly market data reaches customers
• You will work with experienced engineers to develop production software, measure performance and enable observability of a globally distributed platform
• Prior market-data or observability experience is not required; we are looking for strong engineering fundamentals, curiosity and a willingness to learn
• You will work with experienced engineers to build the software and data stack that measures how our Real-Time application delivers data from hundreds of global exchanges to thousands of customers
• You will help turn software signals and synthetic monitoring data into useful end-to-end insight across LSEG’s Real-Time platform
• You will contribute to software that brings together telemetry from individual applications and services, helping engineering and operations teams understand service health, performance and customer impact
• This is a hands-on development role for an engineer at an early stage of their career who wants to build experience in mission-critical distributed systems, observability, cloud-native engineering and real-time financial technology
• Build and improve software components that aggregate, correlate and present data from over 30 global distribution sites
• Develop applications and data-processing logic that help identify performance issues, service degradation and hotspots across distributed systems
• Contribute to telemetry pipelines that ingest, transform and route metrics, logs and traces into a common observability layer
• Deliver synthetic monitoring capabilities that measure the performance and experience of Real-Time services from locations around the world
• Develop APIs, automation and configuration used to manage observability services and capabilities
• Use Git, CI/CD and configuration-as-code practices to deploy and maintain software and observability assets consistently across environments
• Work with engineering squads to add and improve instrumentation within applications across Development, Test, PPE and Production environments
• Work alongside expert engineers to learn modern approaches to observability, distributed systems, cloud-native software and real-time data platforms
• Contribute ideas and improvements as the Real-Time observability platform continues to evolve

A good understanding of core software engineering concepts and an interest in building reliable, maintainable applicationsFamiliarity with APIs, Git and modern software development practicesA willingness to learn unfamiliar technologies and develop knowledge of complex systemsAn interest in one or more of the following areas: market data, observability, distributed systems, telemetry, data pipelines, real-time systems, performance engineering or cloud-native technologyHands-on software engineering experience, gained through employment, a graduate role, or open-source contributionAbility to write and explain software in a performance-oriented languages such as Go, modern C++ or RustDemonstrated analytical and problem-solving ability in complex engineering or academic domainGood communication and collaboration skills, with the ability to work effectively with engineers across different teamsMetrics, logging, distributed tracing or observability platformsFinancial markets, market data or other real-time or latency-sensitive systemsOpenTelemetry SDKs, collectors or telemetry standardsKubernetes, containers or cloud platformsCI/CD, GitOps or configuration-as-code approachesData-processing, event-streaming or telemetry-pipeline technologiesSynthetic monitoring, automated testing, probes or distributed agents