Marsh McLennan Agency Sales Internship  Summer 2025   MMA's internship is a comprehensive program that will provide students with real world business, risk management and insurance experience. Learn to apply the concepts you’ve learned in the classroom through project work and client interaction. You’ll also develop professional skills that will serve you the rest of your career. Marsh McLennan Agency’s internship program gives students the chance to find their interest and place in the insurance industry. MMA’s goal is to provide our interns with insight into all areas of the insurance industry and act as a springboard into full-time careers in the role you desire.