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Sean Tierney has extensive experience in technology and product development, holding the position of Chief Technology Officer and Senior Vice President of Product Development and Technology at TechTarget since January 2000. Prior to this role, Sean worked as a Quality Assurance Manager at Chrysalis Symbolic Design from June 1995 to January 2000, where responsibilities included managing QA, Release, and Documentation teams for an EDA Software startup. Sean's engineering career began at Raytheon, serving as a Senior Engineer from June 1989 to June 1995. Sean earned a Bachelor of Science in Electrical Engineering with concentrations in Electronics, Computer Science, and Math from Merrimack College, completing studies in June 1989.