Senior Full Stack Application Developer, London Stock Exchange
Stock exchange in the City of London
Be an early applicant
Stock exchange in the City of London
1001+ employees
Be an early applicant
1001+ employees
Company mission
To make things happen, out there in the real world, where it matters.
Role
Who you are
- Strong proficiency in React, TypeScript/JavaScript, HTML5, CSS3, Webpack, and REST API consumption
- Familiarity with UI component libraries ( is a plus
- Solid experience with Java (Java 11+), including Spring Boot, JPA/Hibernate, and RESTful service design
- Experience developing microservices is advantageous
- Proficiency with PostgreSQL, including schema design, stored procedures, query tuning, and data modelling
- Hands‑on experience with OAuth2 / OpenID Connect, specifically Keycloak (realm configuration, client setup, roles, user federation, etc.)
- Bachelor’s degree in Computer Science, Engineering, or equivalent experience
- 3+ years of hands‑on full‑stack development experience
- Strong problem‑solving and analytical mindset
- Ability to communicate technical concepts clearly to technical and non‑technical stakeholders
- Collaborative working style with a focus on quality and continuous improvement
- Self‑motivated, adaptable, and comfortable working in agile environments
Desirable
- Experience with Git, CI/CD pipelines, Docker, Kubernetes, or cloud platforms (specifically AWS)
What the job involves
- We are seeking a highly skilled Full Stack Web Developer with strong experience across modern front‑end frameworks, robust Java backend development, database design, and secure authentication/authorization frameworks
- You will play a key role in designing, developing, and maintaining enterprise-grade applications that support our core business operations
- Design, build, and maintain scalable, high‑performance web applications
- Develop rich, responsive front‑end UIs using React, following best practices in component architecture, state management, and performance optimisation
- Implement and maintain secure, reliable backend services using Java (Spring Boot preferred)
- Design and optimise relational database schemas in PostgreSQL, including queries, indexing, and data migration
- Integrate and manage user authentication and authorisation using OAuth2 / OpenID Connect with Keycloak
- Collaborate with product owners, UX designers, QA engineers, and DevOps teams to deliver end‑to‑end solutions
- Participate in code reviews, architecture discussions, and continuous improvement initiatives
- Write clean, maintainable, and testable code across the full stack
- Monitor application performance, troubleshoot issues, and ensure system robustness and stability
Application process
- End Date: March 19, 2026
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.
Steph
Company Specialist at Welcome to the Jungle
Insights
21% employee growth in 12 months
Company
Company HQ
City of London, London, UK
Leadership
David Schwimmer
(CEO)Prior to joining LSEG in 2018, David was a Managing Director at Goldman Sachs for over 20 years.
Salary benchmarks
We don't have enough data yet to provide salary benchmarks for this role.
Submit your salary to help other candidates with crowdsourced salary estimates.
Share this job
View 92 more jobs at London Stock Exchange