Full Stack Java Web Developer

Luxoft; City Of London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Luxoft in City of London is seeking a highly technical, hands-on Java developer to maintain and evolve backend and web applications within a trading platform. You will work with product owners and QA to deliver robust software across markets and time zones.

Requirements include 8+ years of software engineering, strong Java 21, Spring Boot, REST APIs, React integration, SQL databases, and modern tooling (Git, Maven/Gradle). You’ll thrive in an Agile team on Linux in a fast-paced environment.

Qualifications

• 8+ years of software engineering experience.
• Strong Java fundamentals (Java 21) including core concepts.
• Spring Framework (Spring 4+) and Spring Boot 3.x experience.
• Experience building and consuming REST APIs.
• Good knowledge of React (version 17) and integration with backend services.
• Strong understanding of web application architecture and client-server communication.
• Experience with SQL and relational databases (e.g. PostgreSQL).
• Proficiency with version control (Git) and build tools (Maven/Gradle).
• Strong focus on clean code, unit testing, and code reviews.
• Familiar with Agile development practices.
• Comfortable working in Linux/Unix environments.
• Experience with trading platforms is preferred.

Responsibilities

• Contributes to design, development, and implementation of backend services and web applications.
• Writes clean, maintainable, and well-tested code following established engineering practices.
• Participates in technical design discussions and collaborates with senior engineers and architects.
• Works closely with frontend developers to integrate backend services with UI components.
• Supports troubleshooting, debugging, and performance optimization of applications.
• Breaks down user stories into technical tasks and delivers within agreed timelines.
• Collaborates effectively in Agile teams with product owners, QA, and other developers.
• Maintains and improves existing systems while ensuring stability and reliability.
• Builds positive relationships within the team and contributes to a collaborative environment.
• Communicates technical concepts clearly to both technical and non-technical stakeholders.
• Continuously develops technical expertise and stays up to date with modern technologies and frameworks.

Skills

Java

Spring

REST APIs

React

SQL

Git

Maven/Gradle

Agile

Linux/Unix

Education

BS/MS in Computer Science

Tools

Docker

Jenkins

PostgreSQL

Maven/Gradle

Job description

Our Client is a leading global financial markets infrastructure and data provider. Their purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.Team is seeking a highly technical, hands-on Java developer. Our group is focused on bringing a new level of efficiency, transparency and openness to the trading process by building a collaborative community of investors, brokers, technology firms and content providers.Through our modular, end-to-end trade management platform, users can: execute everything from simple single stock trades to complex strategies across markets and time zones and manage their risk throughout the trade lifecycle; access our growing network of execution brokers to route Equities, Futures or Options orders globally, as well as dozens of integrated prime and clearing brokers through our growing suite of middle office tools; and collaborate with our broker and vendor partners, who are able to efficiently plug into our platform to reach our community.This role involves maintenance and enhancement of existing backend and web-based applications, and contributing to the evolution of our trading platform and web user interfaces.

Responsibilities

• Contributes to design, development, and implementation of backend services and web applications.
• Writes clean, maintainable, and well-tested code following established engineering practices.
• Participates in technical design discussions and collaborates with senior engineers and architects.
• Works closely with frontend developers to integrate backend services with UI components.
• Supports troubleshooting, debugging, and performance optimization of applications.
• Breaks down user stories into technical tasks and delivers within agreed timelines.
• Collaborates effectively in Agile teams with product owners, QA, and other developers.
• Maintains and improves existing systems while ensuring stability and reliability.
• Builds positive relationships within the team and contributes to a collaborative environment.
• Communicates technical concepts clearly to both technical and non-technical stakeholders.
• Continuously develops technical expertise and stays up to date with modern technologies and frameworks.

Must have

• 8+ years of software engineering experience.
• Strong Java fundamentals (Java 21 preferred) including core concepts (collections, concurrency, memory management).
• Solid experience with Spring Framework (Spring 4+) and Spring Boot 3.x.
• Experience building and consuming REST APIs.
• Good knowledge of React (version 17) and integration with backend services.
• Strong understanding of web application architecture and client-server communication.
• Experience with SQL and relational databases (e.g. PostgreSQL).
• Proficiency with version control (Git) and build tools (Maven/Gradle).
• Strong focus on clean code, unit testing, and code reviews.
• Familiar with Agile development practices.
• Comfortable working in Linux/Unix environments.
• Experience with trading platforms is preferred; however, candidates with broader financial services systems experience will also be considered.

Nice to have

• Experience with JSF / JSP applications and legacy UI technologies.
• Familiarity with modern frontend practices and component-based architectures.
• Experience with CI/CD pipelines and testing practices.
• Exposure to Docker / containerization.
• Basic understanding of distributed systems.
• Familiarity with Spring ecosystem tooling.
• Knowledge of financial systems or trading platforms is a plus.
• BS/MS in Computer Science or equivalent software engineering qualification.

OtherLanguages

• English: C1 Advanced