Andrew Callahan@andrew_callahanUnited StatesFollowAboutCurrentWorkdayEducationLehigh Univervsity, BethlehemMore about meEngineer at Workday BadgesProblem SolvingDays of Code CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork ExperienceLockheed MartinZenefitsBoeingWorkdayEducationLehigh Univervsity, Bethlehem•  2014