Finn Madsen is a member of the Swedish Bar Association and the International Bar Association. He possesses extensive experience of Swedish and international arbitration practice, both as counsel and arbitrator, and has been appointed as arbitrator and chairperson by the SCC Institute and the ICC.

Madsen has been awarded an honorary doctorate by the University of Lund in recognition of his contribution to international arbitration law. He is a fellow at The Chartered Institute of Arbitrators and listed in a number of legal directories.  In 2017, he founded Madsen Lawfirm with offices in Stockholm and Malmo, Sweden.