Jensen is Of Counsel to Collier Walsh Nakazawa and is based in the Seattle-Tacoma area giving the firm extended reach and additional maritime and environmental capability. Prior to founding his own firm, Mauseth Legal, Jensen was an associate with a major West Coast maritime law firm and was very active in casualty response and maritime litigation. Jensen has represented plaintiffs and defendants in state and federal courts in a wide range of personal injury and commercial disputes.

In addition to his trial practice, Jensen has extensive business experience. He has managed multimillion-dollar companies, negotiated contracts worth hundreds of millions of dollars, and managed development and engineering teams. Jensen honed his management and finance skills at The Boeing Company. Starting in a specialized finance development program, Jensen moved throughout Boeing negotiating supplier contracts and working on large scale projects. Jensen served as a law clerk to the Honorable Ricardo S. Martinez in the US District Court for the Western District of Washington.