Opening: The Metropolitan Transportation Authority is North America's largest transportation network, serving a population of 15.3 million people across a 5,000-square-mile travel area surrounding New York City, Long Island, southeastern New York State, and Connecticut. Job Summary: The Corporate and Professional Services Sourcing Manager will ensure execution of the overall sourcing strategies and methodologies for sub-categories such as Energy, Marketing, Print, HR Benefits, Management Consulting, and Financial Services.