Career Dev. BannerpreviousplaynextColoso Celebrates Mother's Day!Get $700 Coupon PackColoso Celebrates Mother's Day!Get $700 Coupon PackEVENT5.9 - 5.15Mastering 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