Sjöberg is be replaced by Stuart Connolly, who joined NEX Optimisation, the parent company of TriOptima, as head of client product development in November 2016.
Previously, Connolly spent 18 years at Goldman Sachs where he held a number of leadership positions, most recently as managing director of the securities division and head for derivatives clearing services in Europe, the Middle East and Africa.
Connolly’s ascension to CEO is subject to approval by Sweden’s Financial Supervisory Authority.
Michael Spencer, CEO of NEX Group, said: "We thank Per Sjöberg for all of his contributions since founding TriOptima in 2000. Per saw TriOptima grow from its roots in Stockholm when it was a seed of an idea, to a market leading, global business.”
“I am disappointed that he has decided to step down but he leaves the business in a strong position on which we continue to grow for the future. I am grateful for his contribution to TriOptima’s success and wish him all the best going forward."