• Robert Graybill

    Robert B. Graybill, President and CEO, has more than 40 years of HPC-related senior-level experience as a business leader, government program manager, and technology researcher. He recently gained valuable experience at the University of Southern California Information Sciences Institute working with the Council on Competitiveness following six years at DARPA, where among other assignments he headed the agency's High Productivity Computing Systems (HPCS) program. In this role he worked with firms ranging from new ventures to Fortune 100 companies, as well as with leading research institutions and academic centers. He was a member of the Senior Science Team for government HPC studies conducted by the Defense Science Board task force on DoD Supercomputing Needs and the High-End Computing Revitalization Task Force. Earlier, Mr. Graybill held increasingly responsible positions in engineering management, new business development, R&D development and other areas with companies including Westinghouse, Motorola, Martin Marietta Naval Systems, Martin Marietta Corporate Laboratories, Sanders, and Lockheed Martin Government Electronic Systems. Mr. Graybill was the key inventor and developer of Arbitron’s Portable People Meter (PPM) that revolutionized radio rating business. Mr. Graybill is currently a member of the Air Force Science Advisory Board.

  • Brian Schott

    Brian Schott, Chief Technology Officer, has over 20 years of development and technical management experience in the areas of cloud computing, high performance computing, embedded computing systems, network security, and distributed sensor networks. While at the University of Southern California, he managed over $40M in collaborative research projects involving academic, government, and commercial partners. Mr. Schott has developed several hardware and software solutions for commercial technical computing and Defense mission processing applications, including a patented FPGA system licensed by SAIC. In his most recent work at USC, his team contributed heterogeneous high performance computing extensions to the open-source OpenStack cloud. Prior to USC, Mr. Schott worked at the Institute for Defense Analyses’ Supercomputing Research Center, where he developed FPGA-based reconfigurable computing machines, tools, and compilers. He also worked for Braddock, Dunn, and McDonald at the National Security Agency. Mr. Schott has served on proposal review panels for the National Science Foundation and technical advisory panels for the Department of Energy and NASA.

  • Mark Gray

    Mark A. Gray, Vice President of Engineering Operations, has over 30 years of experience specializing in systems and software engineering in both research and development and full life cycle software development. Mark’s primary responsibilities at Nimbis include operations management, project management, federal R&D contract principal investigator, and development team member focusing on web content creation, integration testing, quality assurance, technical documentation, and customer support. Prior to joining Nimbis, Mark was one of the founders of Ingenient Technologies, a Texas Instruments funded 2000 startup that went on to become an international leader in embedded digital signal processing media solutions. Mark left Ingenient in 2009, becoming Nimbis’ first full-time employee. Prior to Ingenient, Mark owned and operated a small consulting services company for eight years specializing in engineering services for embedded high performance computing frameworks for signal processing applications. Prior to forming his consulting company, Mark worked as a software engineer at Martin Marietta Aero & Naval Systems and Hughes Aircraft Company. Mark received his BS degree in Computer Science in 1984 and his MS degree in Computer Science from Johns Hopkins University in 1992. Mark is currently pursuing a PhD in Computer Science part-time at the University of Maryland Baltimore County.