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David Hillier is an experienced technology professional with a strong background in solutions architecture and technical consulting. Currently serving as Principal Solutions Architect at Appian Corporation since June 2017, David has previously held roles including Senior Business Solutions Consultant at BAE Systems Applied Intelligence and Product Manager & Solution Expert at Netsize. David's expertise encompasses enterprise application development, business solutions, and product management, with a focus on mobile applications, data retention, and lawful intercept systems. Earlier career roles included positions at Ericsson and IZR Solutions, complemented by a Master's degree in Computer Systems from the University of Sussex.