As a Prime Brokerage - Client Transition Manager at HSBC, you will oversee the onboarding process for hedge fund and institutional clients, ensuring their commercial, trading, technical, and operational requirements are met. This role involves collaboration with various internal teams and maintaining relationships with high-level external clients. You will be responsible for managing multiple onboarding cases, providing updates, and contributing to the growth of the Prime Brokerage client base by delivering excellent client experiences and cross-selling products.