Senior Java Developer

LSEG (London Stock Exchange Group); Charlotte (NC); On-site; USD 100,000 - 130,000; Full time

Job summary

A global financial markets infrastructure firm located in Charlotte, NC is seeking a Senior Java Engineer to join their Index platform development team. This role focuses on designing complex applications using Java and Python, mentoring junior developers, and understanding financial data systems. Candidates should have extensive experience in backend software development and be adept in tools like Docker and Kubernetes. The firm values innovation and offers growth opportunities for its employees.

Qualifications

• 10+ years of experience in backend software development.
• Excellent problem-solving skills and the ability to mentor junior developers.
• Experience with performance optimizations and JVM profiling.

Responsibilities

• Design, develop, and maintain complex Java and Python applications.
• Collaborate with teams to deliver outstanding products.
• Establish and maintain automated tests for robust applications.

Skills

Core Java

Python

Algorithm and Problem-Solving

Relational Database

Docker

Kubernetes

Microservices

REST APIs

CI/CD tools

Multi-threading

Education

Degree in Computer Science or Electronics / Electrical Engineering

Tools

Jenkins

GitLab

Oracle

SQL Server

Postgres SQL

Job description

United States, North Carolina, Charlotte

Jan 14, 2026

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 commitment 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, handle 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.

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 exciting 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 organization 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 Profile

We are seeking a hardworking and intellectually curious Senior Java Engineer to join the development of new Index platform for FTSE‑Russell Index Business of LSEG in our Fort Mill office. Index team is responsible for calculations and distribution of Indexes to end clients. The individual will be working on innovative technologies with a team of developers to implement solutions which support the strategic growth of the Index business, it requires requirement gathering from Index Research, implementation of some sophisticated algorithms with high precision for computation of financial data points.

If you are creative and a problem solver, this is the place to be as will be supporting you to fast‑forward your career.

What You Will be Doing

• Design, develop, and maintain Complex Java and Python based applications and services using industry‑standard methodologies and tools. Architect new systems or reuse existing systems that drive complex applications.
• Collaborate with Product Managers, UX team, and Software Engineers around the globe to deliver outstanding products.
• Engage actively from requirements gathering and design to the final stages of testing and deployment, ensuring products meet the highest standards.
• Establish and maintain automated tests, guaranteeing applications are robust, scalable, and secure. Proactively solve production issues, deduce root causes, and implement timely fixes or workarounds.
• Lead individual project priorities and target commitments.
• Perform code reviews to ensure application meets or exceeds specified standards and objectives to achieve desired level of quality.
• Demonstrates depth of knowledge and expertise in software design and development to act as the SME in working domain, mentor junior developers on a day‑to‑day basis.

Role Summary

As a developer, you will be responsible for delivering Level 3 production support by efficiently diagnosing and resolving issues to minimize disruption to business operations. This includes analysing incidents, identifying root causes, implementing preventive measures, and delivering timely fixes.

What You Will Bring

• Degree or equivalent experience in Computer Science or Electronics / Electrical Engineering
• 10+ years of shown experience in Core Backend Software Development.

Preferred Skills & Experience

• Excellent Algorithm and Problem‑Solving skills.
• Ability to convert business use cases and problems into technical solutions.
• Ability to learn quickly, creative, results driven, self‑motivated, and solutions oriented.
• Ability to work against tight objectives.
• Demonstrates a can‑do demeanour, leads change, thinks strategically.
• Experience in CI/CD tools & automation e.g., Jenkins/GitLab/similar DevOps tooling.
• Experience working on Performance Optimizations, JVM Profiling.
• Mentor team of junior developers
• Extensive hands‑on experience in:
• Core Java, good understanding of Data Structures and Algorithms
• Python core concepts and proficiency with its libraries and framework
• Relational DB for e.g. (Oracle /SQL server /Postgres SQL)
• DevOps (CI/CD)
• Docker, Kubernetes
• Microservices and REST APIs.
• Good Understanding of Multi‑threading & Concurrency.

Good to have

• Experience in financial services with an understanding of financial market data would be advantageous.
• Experience working with Highly Distributed & Data Intensive system
• Experience working as Scrum Master for the team
• Experience in Level 3 production support.
• Familiarity with technologies such as:
• In‑Memory caching
• Spring Boot
• Redis
• Apache Kafka
• BDD Testing framework such as Cucumber/Jbehave/Karate.

Career Stage

Manager

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.

Equal Opportunities Employer

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone's race, religion, color, 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.