Lead Java Trading System Engineer
Confirmed on the employer's own hiring board on Oct 19, 2026. First seen by Alion on Feb 19, 2026. London Stock Exchange Group scores B on the Alion truth index.
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 commitment to excellence in delivering the services our customers expect from us.
LSEG Data & Analytics 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 of existing backend order management applications, it also presents a unique opportunity to be a part of our vision to build the next-gen trading platform that will complement the existing suite of trading products.
Role responsibilities and key accountabilities:
Demonstrates good knowledge of technologies and/or SME knowledge of a technology, collaborating with others on design, development and implementation.
Advances tools and applications by producing expert code and producing the right solutions needed.
Handles own workload and promotes an inclusive and open culture.
Design, develop, and optimize software solutions using modern technologies.
Collaborate with product teams and architects to deliver scalable and reliable software.
Play a pivotal role in the product development life cycle, ensuring that software solutions are robust and scalable.
Engage with cross-functional teams, central technology functions, and wider stakeholders to ensure software design goals are met.
Ensure alignment of software solutions with LSEG’s technology and business goals.
Maintain up-to-date expert knowledge of relevant technologies and trends.
Communicates complex / technical information clearly and concisely in an audience appropriate format.
Continues to develop technology and industry expertise through certifications, professional qualifications and networking events.
Essential skills
Financial industry experience building buy or sell side trading systems.
Strong understanding of system architecture and design.
Strong Java fundamentals (JVM, multithreading, collections, I/O, etc).
Strong development experience in Java technology stack along with API development, Docker and Kubernetes.
Strong technical experience on writing clean code, unit tests, code reviewing and refactoring.
Good knowledge of the following software engineering principles: SOLID, DRY, Law of Demeter.
Keen understanding of the challenges in low-latency development and practical techniques for addressing them.
Experience with distributed version control systems (Git) and build automation tools (Gradle, Maven).
Experience with Linux / Unix operating systems.
Experience with RDBMS (e.g. PostgreSQL).
Familiar with Agile methodology and its implementation.
Over 5 years software engineering experience as an individual contributor.
Other desirable skills
Practical knowledge / experience with TDD (test driven development) and CI/CD (continuous integration / continuous delivery) practices.
Experience with Spring & Spring Boot, Redis and Apache Kafka.
Familiarity with cloud platforms (ideally Microsoft Azure).
Deliver service excellence on-time, on-scope and on-budget.
Strong verbal and written communication skills.
Ability and interest in working in a dynamic, focused, upbeat and constantly evolving group.
Ability to work in a fast-paced environment.
Critical and creative thinker; able to think “out of the box”. Problem-solving focused.
Educational background
BS/MS in computer science or equivalent software engineering qualification.
Career Stage:
Senior AssociateCompensation/BenefitsInformation:
LSEG is committed to offering competitive Compensation and Benefits. The anticipated base salary for this position is $113,900 - $189,900.Please be aware base salary ranges may vary by geographic location, city and state. In addition to our offered base salary, this role is eligible for our Annual Incentive Plan (AIP/”bonus plan”). Target AIP rates will be commensurate with role level and posted career stage. Individual salary will be reflective of job related knowledge, skills and equivalent experience. LSEG roles (excluding internships and part-time roles of less than 20 hours per week) are typically eligible for inclusion in our LSEG Benefits program, which includes offerings of: Annual Wellness Allowance, Paid time-off, Medical, Dental, Vision, Flex Spending & Health Savings Options, Prescription Drug plan, 401(K) Savings Plan and Company match. LSEG’s Benefits plan also includes basic life insurance, disability benefits, emergency backup dependent care, adoption assistance commuter assistance etc.London Stock Exchange Group (LSEG) Information:
Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you.
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.
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.
You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.
LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.
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.