Career Dev. BannerpreviousplaynextLimited Valentine’s Day Offer!Buy 2, Get 2 Free BundleLimited Valentine’s Day Offer!Buy 2, Get 2 Free BundleEVENT2.11 - 2.17Mastering JAVA Stream with 25 Practical Backend Development ExercisesSenior Software Engineer, Seunghwan LeeBack-end Essentials: Architecture for High Capacity Service with RedisSoftware Engineer, Daemyeong KangBuilding a Highly Scalable Architecture for a Super-AppSenior iOS Engineer, Soojin Ro