After completing medical school, Xavier trained in cardiovascular research at Case Western Reserve University.  As an entrepreneur, he was part of two class III medical device startups from initial inception through acquisition. He also led Olympus Medical as an executive, directing the development and approval of a range of medical products.

Xavier is now an independent consultant, providing strategic guidance to both startup companies and established organizations. He holds over 25 patents, has authored over 50 scientific abstracts and 13 publications, and currently serves as a mentor for the Washington Innovation Network.

His entrepreneurial journey began with the development of the Class III InControl “Metrix” implantable pacemaker/defibrillator for diagnosing and treating supraventricular arrhythmias in the field of interventional cardiology. Both the company and technology were acquired by Guidant Corporation (now part of Boston Scientific) in 1998.

Following his consultancy for Guidant and various local start-ups, Xavier co-founded Spiration Inc. in 1999 to develop minimally invasive bronchoscopic and surgical methods and devices for treating lung diseases. Spiration was built from the ground up, requiring multiple rounds of investment to support hiring personnel, research and development, intellectual property, engineering, bench, preclinical and clinical trials, regulatory affairs, quality, manufacturing, marketing, and eventually a sales team.

In 2010, Spiration was acquired by Olympus Medical Corporation, and Xavier continued as Vice President and Chief Scientific Officer, supporting R&D and clinical projects for Spiration and the Olympus Respiratory Division. In this role he developed additional products for lung cancer diagnostics, interventional bronchoscopy, interventional GI endoscopy, and surgery. The Spiration Valve System received FDA approval in 2018.

Xavier was a member of multiple Olympus executive teams and provided technological assessments for Olympus partnerships and acquisitions. He retired from Olympus in December 2021.

Since 2022, Xavier has been working as an independent consultant, focusing on strategy for medical device projects and start-up companies. In the same year, he joined the Washington Innovation Network (WIN) program as a pro bono mentor, assisting entrepreneurs and early-stage MedTech companies.

Currently, Xavier supports 13 companies in the WIN program and serves as the lead mentor for four of them. He also provides support to the University of Washington innovation programs.