Principal Software Engineer, London Stock Exchange

Python

Salary not provided

Python

Azure

Senior and Expert level

London

1+ day a week in office ( Paternoster Square, London)

Stock exchange in the City of London

Be an early applicant

Stock exchange in the City of London

501-1000 employees

B2BMarketplaceTrading

Be an early applicant

Salary not provided

Python

Azure

Senior and Expert level

London

1+ day a week in office ( Paternoster Square, London)

501-1000 employees

B2BMarketplaceTrading

Company mission

To make things happen, out there in the real world, where it matters.

Job

Company

Role

Who you are

Expert-level Python skills
Extensive experience in software engineering with a focus on high-performance and scale
Experience working cross functionally, particularly with Product and Research teams
Experience with cloud technologies (emphasis on Azure) and deployment practices
Working knowledge of DevOps, including CI/CD pipelines, automated testing, and monitoring
Proven ability to uphold coding and design standards to ensure high-quality, maintainable code
Effective communication skills, with experience communicating with both technical and non-technical colleagues
Experience in Fintech is a plus
Education: a degree in Engineering, Computer Science, Data Science, Statistics, Mathematics, Physics or related field, or equivalent work experience

What the job involves

You will be working for a growing, high-profile organization
You will develop high-impact solutions that operate at scale
You will combine strategic thinking, strong problem-solving skills and a collegiate approach to working
Design and development of scalable software
Solve complex technical issues and provide strategic technical insights
Collaborate closely with Data Science and Product teams
Set high technical standards
This is a hands-on, individual contributor role, reporting to an Engineering Manager

Application process

End Date: October 1, 2025

Salary benchmarks

Our take

The London Stock Exchange is one of the world’s oldest stock exchanges, with a history dating back over 300 years. It operates as a part of LSEG (London Stock Exchange Group), one of the world’s leading providers of financial markets infrastructure, as a marketplace to enable stock brokers and traders to buy and sell stocks, bonds, and other securities.

The London Stock Exchange has lived through a stream of innovations; from telegraph and telephone, to the Market Price Display System, automatic trade matching, and the digitisation of issuer services. In 2019 it acquired Refinitiv, a financial information company, and in doing so became a global financial news and data business.

Most recently, the London Stock Exchange has made moves to support the evolution of private markets, and further build its presence in this space. It partnered with Floww, a platform that connects investors with private companies, with aims to launch a private primary capital raising facility, as well as explore new technologies and secondary market options for the platform.