Jian Yuan Lee@jianyuanUnited KingdomFollowAboutCurrentYoyo WalletEducationImperial College London, London BadgesProblem SolvingCPPJavaPythonSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork ExperiencePlatform EngineerYoyo Wallet•  2014EducationImperial College London, London