Java Developer

ABOUT US:

LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. It’s how we’ve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services – and our open-access model – we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.

LSEG is headquartered in the United Kingdom, with significant operations in 70 countries across EMEA, North America, Latin America and Asia Pacific. We employ 25,000 people globally, more than half located in Asia Pacific. LSEG’s ticker symbol is LSEG.

OUR PEOPLE:

People are at the heart of what we do and drive the success of our business. Our culture of connecting, creating opportunity and delivering excellence shape how we think, how we do things and how we help our people fulfil their potential. We embrace diversity and actively seek to attract individuals with unique backgrounds and perspectives. We break down barriers and encourage teamwork, enabling innovation and rapid development of solutions that make a difference. Our workplace generates an enriching and rewarding experience for our people and customers alike. Our vision is to build an inclusive culture in which everyone feels encouraged to fulfil their potential.

We know that real personal growth cannot be achieved by simply climbing a career ladder – which is why we encourage and enable a wealth of avenues and interesting opportunities for everyone to broaden and deepen their skills and expertise. As a global organisation spanning 70 countries and one rooted in a culture of growth, opportunity, diversity and innovation, LSEG is a place where everyone can grow, develop and fulfil your potential with meaningful careers.

ROLE SUMMARY:
We are seeking an experienced Senior Java Developer with a passion for building high-performance FX trading applications. In this role, you will contribute to the design, development, and optimization of our flagship FX Matching Venue. You will work in a dynamic, regulated financial environment and collaborate closely with product lead cross-functional teams to deliver innovative, market-leading solutions.

WHAT YOU'LL BE DOING:

Core Application Development:

• Develop, maintain, and optimize high-performance FX Matching applications using Java.
• Implement event-driven architecture principles to build responsive and scalable systems.
• Optimize Java applications and conduct OS-level tuning to meet high-frequency trading performance targets.

Technical Collaboration & Support:

• Work alongside product managers, architects, operations and other technical experts to design robust solutions that meet operational, risk, and regulatory requirements.
• Collaborate within Agile teams, contributing to code reviews, mentoring junior developers, and ensuring adherence to best practices in coding, testing, and continuous integration.
• Engage in troubleshooting, performance analysis, and proactive resolution of technical issues to enhance system reliability.

Process & Quality Assurance:

• Contribute to the evolution of efficient development processes, ensuring that high-quality, maintainable code is delivered consistently.
• Develop and maintain automated testing frameworks and participate in continuous integration/continuous deployment (CICD) initiatives.
• Implement application security practices to ensure that the software meets the highest standards of reliability and compliance.

WHAT YOU'LL BRING:

• Demonstrated experience working with high performance architecture for FX trading applications.
• Bachelor’s degree in Computer Science, Software Engineering, Electrical Engineering, or equivalent.
• Significant hands-on experience in low latency Java/C++ development.
• Experience with FIX, Binary protocols (e.g., FIX 5.x)
• Proficient in multi-threading, concurrency, and performance tuning within Java applications.
• Practical experience in implementing event-driven architecture to support scalable system design.
• Familiarity with Agile development methodologies and CI/CD tools (e.g., Git, GitLab, Bamboo, BitBucket, Sonarqube).
• Solid working knowledge of Linux environments.
• Experience with application security tools (e.g., Veracode, Coverity, Blackduck) is a plus.
• Strong problem-solving skills with the ability to analyze and address complex technical challenges.
• Excellent verbal and written communication skills, capable of collaborating effectively with both technical and non-technical stakeholders.
• A proactive, results-driven approach with a passion for continuous improvement and innovation.
• Ability to work independently as well as collaboratively within a fast-paced, Agile environment.

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce. You will be part of a collaborative and creative culture where we encourage new ideas and are committed to sustainability across our global business. You will experience the critical role we have in helping to re-engineer the financial ecosystem to support and drive sustainable economic growth. Together, we are aiming to achieve this growth by accelerating the just transition to net zero, enabling growth of the green economy and creating inclusive economic opportunity.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.

Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject.

If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.