CME Group is seeking a Platform Engineer III to design, develop, and maintain scalable, high-performance trading infrastructure. The role involves collaborating with cross-functional teams to build robust platforms using technologies such as Java, Linux, and cloud environments. Candidates should have strong software engineering skills, experience with distributed systems, and knowledge of continuous integration and deployment practices. This is a full-time position based in Chicago, offering the opportunity to work in a fast-paced, innovative financial technology environment.