Chief Executive Officer (CEO)

Ruben van der Zwan

Ruben van der Zwan brings extensive experience to Worldstream. Starting his internet career back in 2005 at Argeweb, a domain registration and web hosting company, he later co-founded a managed services provider called Amsio. After a while, the Sentia Group acquired this company, supported by Waterland Private Equity. In 2022, Sentia was sold to Accenture, where Ruben worked until joining Worldstream. Throughout his career, Ruben’s primary focus has been on converting Cloud technology into value for customers: first as CTO, then as managing director, and now as CEO at Worldstream.

Chief Financial Officer (CFO)

Ernst Wiemans

Known for his analytical mindset and result-driven approach, Ernst Wiemans is passionate about building high-performing teams and driving financial transparency. He has solid expertise in financial strategy, structuring, M&A, and integration. After starting at KPMG and holding leadership roles at Randstad, he became Finance Director at Sentia Group, where he reshaped the finance department and boosted financial transparency. Then, as CFO at Happy Horizon, he focused on raising debt financing, integrating acquired companies, and creating financial insights to optimise performance. Now at Worldstream, Ernst leads the finance team and drives efforts to further professionalize the company and support its growth.