Senior Software Engineer - FX Trading

About the Project

Are you passionate about crafting ultra‑high‑performance systems that connect global markets? Our FX Trading Aggregator enables seamless access to liquidity for top banks and traders worldwide. This is your chance to work on a mission‑critical platform trusted across global financial institutions.

The system offers flexible execution management and venue choice, delivering market prices in milliseconds. Our Java‑based platform runs across hundreds of servers in U.S., European, and Asian data centers, providing real‑time, low‑latency access to global liquidity.

Your Impact

You’ll join a team that owns the full lifecycle of the Aggregator application—from build and design to maintenance and production support. We follow Agile practices but remain ready to act quickly when production issues arise.

Responsibilities – What You’ll Do:

• Technical design and development of new functionality for the FX trading platform.
• Collaborate with product managers and engineers to analyze requirements, estimate effort, and plan work.
• Design, develop, and document scalable, resilient software solutions.
• Enhance existing applications and components.
• Conduct code reviews and mentor team members.
• Support DevOps with automation for upgrades, patching, and maintenance.
• Partner with QA to advance automated testing strategies.
• Provide L3 production support, including occasional on‑call responsibilities.
• Drive learning and development initiatives for the team.
• Lead design for Epics and break work into actionable stories.
• Apply high‑performance and low‑latency design patterns.

Requirements:

Core Technical Skills

• Strong analytical and problem‑solving abilities.
• Proven software development experience with recent Java versions.
• Ability to write complex algorithms and data structures; high analytical rigor.
• Proficiency in Rust and Java (Rust optional but strongly beneficial).
• Deep experience with Linux, SQL, and networking.
• Strong understanding of high‑performance programming and optimization techniques (GC tuning, memory optimization, profiling).
• Experience with message‑driven systems (Kafka, Tibco, Solace).
• Solid grasp of distribution systems resilience (failover, redundancy, recovery).
• Hands‑on experience building real‑time, low‑latency systems a plus
• Familiarity with middleware technologies (Kafka, Tibco, RabbitMQ).
• Cloud infrastructure & containerization (Kubernetes, Azure preferred).

Domain & Modern Engineering Skills

• Understanding of FIX lifecycle and prior experience in bank trading preferred
• Ability to use and direct AI agents to help generate, optimize, and review code.
• Agile leadership experience.
• Excellent communication and collaboration skills.
• Ability to operate independently at a senior technical level.

Why Join Us?

You’ll work on technology that moves global markets, alongside a diverse and highly skilled engineering team. We value innovation, collaboration, and continuous learning. If you’re passionate about high‑performance systems and want to make an impact you can feel globally, we’d love to speak with you.

Career Stage:

Senior Associate

Compensation/Benefits Information:

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.