Slendebroek, who joined the company on 3 September, will report to chief executive Edward Bonham Carter, and will be responsible for diversifying the company’s distribution capabilities in the UK and abroad.
He left BlackRock in March this year and Alex Hoctor-Duncan took up the role of head of retail for EMEA, which formed part of Slendebroek’s role.
Jamie Dundas, chairman of Jupiter, said: “We are delighted to welcome Maarten to the Board. The depth of experience he brings will be of great value to the company and we look forward to the contribution he will make to growing the business to the benefit of both clients and shareholders.”