A veteran of the Managed Service Provider (MSP), government and enterprise markets, MacCallum leverages her extensive experience and software development skills to lead the Voyence engineering team as it further enhances the VoyenceControl NG solution to meet the unique configuration lifecycle management needs of those markets. Prior to joining Voyence, MacCallum was vice president and co-founder of Silverback Technologies, Inc, where she managed the company, product, and customers through several major technology shifts including: Linux to Windows, centralized to distributed architecture, and most recently to policy-based software as a service (SaaS) offering. Her product vision of merging network security and monitoring enabled the company to effectively enter the small to mid-size enterprise market. MacCallum's other experience includes as director of remote management services at Nortel Networks, manager of testing and development at Bay Networks, and senior engineer at Raytheon. MacCallum also held the position of senior engineer at Intermetrics, where she was responsible for the design and development of the Space Shuttle Data Management capabilities and she holds three U.S. patents.