Software Engineer Intern

Investors' Exchange LLC • New York, NY

51d

About The Position

IEX (IEX Group, Inc.) is an exchange operator and technology company dedicated to innovating for performance in capital markets. Founded in 2012, IEX launched a new kind of securities exchange in 2016 that combines a transparent business model and unique architecture designed to protect investors. Today, IEX applies its proprietary technology and experience to drive performance across asset classes, serve investors, and advocate for transparent and competitive markets. IEX is seeking a Software Engineer Intern to join our Software Engineering team. In this role, you will work alongside experienced engineers to design, build, and optimize systems that power our exchange and new product offerings. You will gain exposure to high-performance, low-latency systems and contribute to projects that directly impact how markets operate. This internship offers the opportunity to develop your technical skills while learning about market structure, electronic trading, and the unique challenges of real-time systems at scale. About You: Self-starter - takes responsibility for learning and contributing, even on smaller projects. Analytical and creative - not afraid to deep dive on technical challenges. Critical thinking and problem-solving - approaches complex tasks methodically, identifying root causes and developing practical, effective solutions. Inquisitive - asks questions and independently researches applicable solutions.

Requirements

• Pursuing a Bachelor's degree in Computer Science, Computer Engineering, or a related field.
• Fundamental understanding of computer science - algorithms, data structures, and systems concepts (i.e., memory, CPU, networking).
• Proficiency in at least one systems-oriented or analytics language (i.e., C++, Python, or Java)
• Ability to reason performance and scalability for optimized production systems.
• Familiarity with LLM assisted coding tools (i.e., Codex, Cursor, Claude Codes).

Nice To Haves

• Experience with data modeling, statistics, or machine learning is a plus.

Responsibilities

• Collaborate with technology and operations teams to design and implement solutions that support the exchange's trading systems.
• Contribute to the development and maintenance of C++ and Java-based frameworks, messaging APIs, and data structures that power critical exchange functions.
• Assist in the software development lifecycle, including building, testing, deploying, and managing application dependencies.
• Work on systems such as order entry, market data distribution, post-trade processing, and system monitoring and reporting.

What This Job Offers

• Career Level: Intern
• Industry: Securities, Commodity Contracts, and Other Financial Investments and Related Activities
• Number of Employees: 51-100 employees