Founder & CEO
Rupert is responsible for guiding the company’s strategic vision and global business strategy. He is a recognized DOD Industry Innovator internationally known for his work in commercialization of defense technologies and industrial productivity. He has served as an adviser to the U.S. Secretary of Defense Office of Economic Adjustment, the Defense Standardization Program Office, the Council on Foreign Relations, the Soros Foundation and others. A thought leader in the Internet of Things (IoT) space, Rupert has been the driving force behind XSB's SWISS(R) technology. The IoT for Publishing, SWISS®
makes Smart, Connected Documents possible. Prior to founding XSB in 1998, Rupert was the Director, Center for Alternate Sources of Parts (CASP) at Dayton T. Brown. He is also the former Long Island Regional Director of Economic Development (1987-1995).
Richard J. Gill
Treasurer, Co-Founder and Board Member
Rick has over 30 years of experience in finance and management. He has been responsible for the financial stewardship of XSB since the company’s inception in 1998. Prior to co-founding XSB, Rick worked for several years with Coopers and Lybrand (PriceWaterhouse Coopers) before becoming Controller for Transcontrol Corporation, a division of Siemens A.G. Throughout his diverse career, he has also served as CFO for United Biomedical Inc., and was a Member of the Board of Directors and CFO of Lourdes Industries Inc., a regional defense firm.
David Warren, Ph.D.
Co-Founder and Vice President of Sciences
David is a co-founder of XSB and serves as the company’s Vice President of Sciences. He is a world-renowned Computer Scientist in the field of Logic Programming, a former Chairman of the Stony Brook University Computer Science Department (1996-1999), and a Fellow of the ACM. David’s work and research have centered on a variety of topics in the field of logic programming. He initiated and led the more than 30-year effort to organize the XSB tabled logic programming community, and has spent much of his career focusing on the design and development of the open source XSB logic programming system. David is credited with having authored more than 100 technical papers that were published in major conferences and journals on topics relating to logic programming and has served as the Principal Investigator on multiple research grants from a variety of government agencies.
Chief Operating Officer
Tanya is an award-winning technology veteran. As Chief Operating Officer at XSB, Tanya is responsible for the technical direction of the company and for developing strategies to bridge the gap between XSB's traditional products and emerging technologies, such as SWISS®. Since joining XSB in 2001, Tanya has been the driving force behind XSB's core technology innovations. She has served as Principal Investigator on multiple Research & Development grants funded by the National Science Foundation and the Defense Advanced Research Projects Agency, and has authored two patents. Tanya holds a Masters Degree in Computer Science from Stony Brook University, as well as a BS in Applied Mathematics. She is also a graduate of the Harvard Business School Executive Program.
Chief Technology Officer
Stan has 20 years of experience in software design and development, writing, maintaining, and supporting enterprise software for Fortune 500 companies. As CTO at XSB, Stan oversees product lifecycle development, ensuring that the company continues to scale and innovate its products and services. Stan also leads XSB's software development and IT teams, building scalable, reliable infrastructure and user friendly applications and APIs. Stan brings a wealth of knowledge to XSB having served as the Software Development Manager of Moxie, an enterprise eCommerce solutions provider, for more than 12 years. Stan holds a Masters Degree in Computer Science from Stony Brook University, is a certified Scrum Master and has served as an Adjunct Lecturer at a number of teaching facilities including Briarcliffe and Dowling Colleges.
Vice President Operations
Daria is XSB’s Vice President of Operations where she oversees contracting, procurement, intellectual property protection, HR and finance. Daria is also directed the company's pricing cluster business. Prior to joining XSB in 2001, she held a variety of management and senior leadership positions in the software industry. Daria is a Certified Contracts Manager and holds a Masters Certificate in Federal Contract Management from George Washington University. She also holds a BA from Stony Brook University and has taken executive education courses at the Kellogg School of Management at Northwestern University.