Java Programmer Internship Jobs in Long Island, NY

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, 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.
We are looking to hire a motivated, hands-on mid-level Java engineer to help design, build, and operate large-scale trading platforms. The group is responsible for FX trading and related services. Experience with low-latency systems is beneficial, with opportunities to further develop these skills on the job.
We value technical aptitude, innovative thinking, a strong curiosity to learn, and teamwork.
We are particularly excited about engineers who have a passion for AI and emerging technologies, and who are curious and eager to learn how AI can be applied to modern software engineering and trading platforms.
Responsibilities

• Closely work with architects and other team members and groups to develop and build complex applications that meet the needs of FX Engineering.
• Design, development, and support of trading venues and related services.
• Ongoing support and development of cloud services, including working with product development groups to build cloud-aware applications.
• Develop and maintain automated processes to help prevent, identify, and resolve issues that impact service availability.
• Identify and contribute to improvements across a broad range of areas such as cost savings, security, ease of use, and reliability.
• Actively learn and adopt new technologies, tools, and practices, including AI-assisted development techniques.

Required Skills

• Strong Java programming skills with experience writing clean, maintainable code.
• Solid understanding of data structures and algorithms.
• Working knowledge of concurrency and performance optimization, with a desire to deepen expertise over time.
• Good understanding of system architecture fundamentals and memory management.
• Familiarity with profiling and performance analysis tools.
• Exposure to libraries and frameworks used in low-latency or high-performance applications.
• Knowledge of network protocols (TCP, UDP, HTTP) and an understanding of network performance considerations.
• Ability to use and direct AI agents to help generate, optimize, and review code.
• Proven ability to deliver on commitments and work effectively within a team.
• Knowledge and experience with modern agile development methodologies.
• Exposure to DevOps practices, including automation of software testing, delivery, and infrastructure changes.
• Self-motivated and able to work effectively in a globally distributed team, managing multiple priorities while collaborating with cross-functional teams.
• Strong problem-solving skills, with the ability to investigate technical issues across multiple technologies with guidance from senior engineers.

Desired Skills

• Experience with cloud technologies (e.g., AWS, Azure, or GCP).
• Experience with SQL and NoSQL databases.
• Demonstrated interest or hands-on experimentation with AI, machine learning, or AI-assisted development tools.
• Strong passion for technology and a willingness to continuously learn new skills.
• Excellent communication (written and verbal) and interpersonal skills.

Career Stage:
Manager
Compensation/Benefits Information:
LSEG is committed to offering competitive Compensation and Benefits. The anticipated base salary for this position is $129,700 - $216,100.
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.