St. Louis, MOManager, Eligibility Implementations & Projects at... I have been with Express Scripts, Inc. for over four years. I began at ESI as a Training Facilitator, was promoted to an Operations Manager in Claims... I have been with Express Scripts, Inc. for over four years. I began at ESI as a Training Facilitator, was promoted to an Operations Manager in Claims Administration. Within my three years in Claims, I had three roles...the Ops Manager, then Manager of Quality & Training, and finally the Vendor...