RBC Dexia Investor Services has appointed Simon Hirtenstein as head of portfolio solutions within its market products and services team (MPS). Hirtenstein will be based in the London office to direct support to enterprise custody sales, product pricing, product rollouts and enhancements. He will work closely with the MPS product managers, and will be responsible for direct sales of MPS on a third-party basis. He previously worked as a consultant director at SIAM consulting.