Weiss joined the US firms only two years ago from construction specialist Masons, where he co-founded the project and asset finance group. He brings with him Dominic Spacie, who joins as a partner, and Francis Sergejew.
But it is understood Steven Janes, who quit for Mayer Brown & Platt alongside fellow co-founder Weiss, is not leaving.
Denton Wilde Sapte has been seeking to bolster its project finance practice since the merger last year
The appointments will bring the number of partners in the banking and finance department up to 32, 10 of which specialise in asset and project finance/PFI