Gray Technologies was estabished in 1992 by Mark Allen Gray as a professional software engineering consulting and services company. At that time, Mark completed his Masters of Science degreee in Computer Science at Johns Hopkins University Whiting School of Engineering specializing in real-time embedded systems software design. Prior to this, Mark had worked full-time as a software engineer for Hughes Aircraft Company in El Segundo California working in the Advanced Programs Division on stealth radar systems from 1984 to 1986 then at Martin Marietta Aero & Naval Systems in Baltimore Maryland from 1987 until 1992 working on several advanced sonar systems for submarines, ships, and autonomous underwater vehicles. Mark received an award from Martin Marietta for his research and development contributions on the mission controller software for the Tactical Acoustic System (TAS) autonomous underwater vehicle, a DARPA funded R&D project in collaboration with Charles Stark Draper Laboratory.

From 1992 to 2000 Gray Technologies provided software engineering design and development services to 22 customers across 48 projects including the Department of Defense Maryland Procurement Office, Martin Marietta Laboratories, several Lockheed Martin divisions, and several other DoD prime and subcontractors. All projects focused on real-time embedded software design and development for digital signal processing (DSP) systems including radar, sonar, speech, and image processing systems on Analog Devices DSPs. During this period, Gray Technologies managed 11 employees and 10 subcontractors. Two significant projects that are deployed and operating today are the Arrow Continuation Experiments Ballistic Missile Defense Radar Seeker used by Israel in their airspace defense and the Light Airborne Multipurpose System (LAMPS) multi-mode radar on the US Navy's SH-60B Seahawk helicopter used for US maritime surveillance.

From 2000 to 2009 Gray Technologies moved from the defense market to the commercial market during the emergence and establishment of embedded multimedia in the explosion of multimedia products utilizing audio and video encoders and decoders on Texas Instruments DSPs. During this period, Mark operated a branch office for Ingeneint Technologies in Baltimore Maryland and managed project staff at an Ingenient branch office in Bangalore India as part of Ineneint's professional services business unit. Customers were worldwide primarily servicing the big commercial electronics manufacturers including GE, Hitachi, JVC, LG, Samsung, Sony, Toshiba, and many others. Drone technologies with video surveillance were under development during this period and Mark established and managed Ingenient's ITAR compliance requirements for US customers in this space.

From 2009 through Q3 2015, Mark was engaged as a founding partner of Nimbis Services, Inc. Nimbis’ primary goal is to provide low-risk, low-effort, pay-as-you go access to high performance computing (HPC) platforms and applications in the cloud for small and medium sized enterprises (SMEs) and start-ups in the engineering and manufacturing supply chain who are currently unable to move beyond technical computing on the desktop. SMEs and start-ups are critical players in the manufacturing supply chain. Because of barriers to HPC, these companies are often forced into slow and limited physical prototyping methods that do not have the advantages of modeling and simulation analysis provided by HPC. A key aspect of Nimbis’ services is to provide access to, and license management for, commercial HPC software. Through Nimbis’ online Technical Computing Marketplace, SMEs and start-ups can break down the barriers to HPC and realize the benefits of HPC without the large infrastructure price tag. Nimbis operates two business units for government and commercial customers. Mark's responsibilities in the government sector were on the management and R&D activities of projects with DARPA, DOE, and the Air Force. Mark's responsibilities in the commercial sector were on the development, testing, deployment, sales, and support of Nimbis' cloud products in the Nimbis marketplace.

In 2013, Mark was accepted as a part-time PhD student in Computer Science at the University of Maryland Baltimore County (UMBC). At UMBC, Mark is researching the integration of embedded, cloud, and HPC technologies within the context of the newly emerging Internet of Things (IoT). Mark's focus within the large and evolving domain of IoT is on cloud services for wirelesss sensor networks and more specifically on smartphone sensing as a service where the smartphone and groups of smartphones are the wireless sensor networks and the gateway to the cloud for leveraging cloud-based services. Mark's research advisor is Dr. Milton Halem, a research professor at UMBC who retired from his position as Chief Information Officer for the NASA Goddard Space Flight Center.  Mark has published two research papers, based on his research at UMBC, through international conference proceedings at conferences held in Venice Italy (May 2014) and Cambridge University (September 2015).