Sijie Dong@asksbjFollow BadgesProblem SolvingJava Certificationsasksbj has not earned any certificates yet. Work Experienceasksbj has not updated employment details yet.Educationasksbj has not updated education details yet.LinksLinkedinhttps://www.linkedin.com/in/sijie-dong-432862b2 Skillsasksbj has not updated skills details yet.