Principal Engineer

Intercontinental Exchange Holdings, Inc.•New York, NY

6h•Onsite

About The Position

As a Principal Engineer, you will work on maintenance and modernization of web-based test management platform for exchange testing. The platform will be used by QA and Development teams to author, execute, and validate test cases against a trading system. You will be responsible for driving the architecture and technology decisions, building and maintaining the platform, coordinating test execution workflows, training users, and providing ongoing support.

Requirements

Bachelor's degree in Computer Science, Computer Engineering, or related Engineering field
8+ years of experience in software development
4+ years building data-intensive web applications with React/TypeScript frontends
Strong experience building complex interactive UIs — dynamic forms, data tables with large datasets, real-time streaming displays, and diff/comparison views
Experience designing and building RESTful APIs
Experience building internal tools or platforms for technical users
Proficiency in using of AI coding assistants (Claude Code, Cursor, Copilot, or equivalent) as a daily part of the development workflow

Nice To Haves

Prior experience working on development of Trading Systems Test tools is a plus
Experience with trading and financial applications
Knowledge of FIX protocol or other message-based communication protocols
Experience with custom binary or text protocol parsing
Experience building developer tools, test management platforms, or data exploration UIs
Experience building UIs that consume real-time data streams (WebSocket / SSE / gRPC-Web)
Familiarity with Kafka concepts
Experience with Python web frameworks (FastAPI, Flask, or Django) and async programming
Familiarity with C++ or Java codebases

Responsibilities

Design and build a modern web-based platform using React, TypeScript, and Python, integrating with existing testing infrastructure featuring C++, Java, and Python architectures
Build intuitive UI components for test authoring, execution monitoring, and result analysis that simplify complex protocol-level operations for QA users
Develop backend services including REST APIs, real-time streaming, custom file parsers, and in-memory data indexing for large datasets
Work side by side with QA teams to understand testing workflows and translate them into effective UI/UX designs
Perform troubleshooting of software and environment configuration issues across testing infrastructure
Gain experience with Iterative and Agile software development methodologies and participate in all aspects of the full development lifecycle