diff --git a/src/main/java/com/example/oneul/domain/user/service/UserServiceImpl.java b/src/main/java/com/example/oneul/domain/user/service/UserServiceImpl.java
index 8f2e436..525a485 100644
--- a/src/main/java/com/example/oneul/domain/user/service/UserServiceImpl.java
+++ b/src/main/java/com/example/oneul/domain/user/service/UserServiceImpl.java
@@ -2,18 +2,17 @@ package com.example.oneul.domain.user.service;
 
 import javax.servlet.http.HttpSession;
 
-import com.example.oneul.domain.user.dao.UserRepository;
-import com.example.oneul.domain.user.domain.UserEntity;
-import com.example.oneul.domain.user.exception.UserAlreadyExistException;
-import com.example.oneul.domain.user.exception.WrongUsernameAndPasswordException;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.stereotype.Service;
-import org.springframework.transaction.annotation.Isolation;
 import org.springframework.transaction.annotation.Transactional;
 
+import com.example.oneul.domain.user.dao.UserRepository;
+import com.example.oneul.domain.user.domain.UserEntity;
+import com.example.oneul.domain.user.exception.UserAlreadyExistException;
+import com.example.oneul.domain.user.exception.WrongUsernameAndPasswordException;
+
 @Service
 @Transactional
 public class UserServiceImpl implements UserService {
@@ -27,7 +26,6 @@ public class UserServiceImpl implements UserService {
     }
 
     @Override
-    @Transactional(isolation = Isolation.SERIALIZABLE)
     public UserEntity signUp(UserEntity userEntity){
         if(userRepository.findByUsername(userEntity.getUsername()).isPresent()){
             throw new UserAlreadyExistException(userEntity.getUsername() + " is already exists");
diff --git a/src/main/java/com/example/oneul/infra/config/BatchConfig.java b/src/main/java/com/example/oneul/infra/config/BatchConfig.java
index 93621db..24867c8 100644
--- a/src/main/java/com/example/oneul/infra/config/BatchConfig.java
+++ b/src/main/java/com/example/oneul/infra/config/BatchConfig.java
@@ -1,4 +1,4 @@
-package com.example.oneul.global.config;
+package com.example.oneul.infra.config;
 
 import java.time.LocalDateTime;
 import java.util.List;
diff --git a/src/main/java/com/example/oneul/infra/config/MongoConfig.java b/src/main/java/com/example/oneul/infra/config/MongoConfig.java
index 26f3b89..3a18b98 100644
--- a/src/main/java/com/example/oneul/infra/config/MongoConfig.java
+++ b/src/main/java/com/example/oneul/infra/config/MongoConfig.java
@@ -1,4 +1,4 @@
-package com.example.oneul.global.config;
+package com.example.oneul.infra.config;
 
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Bean;
diff --git a/src/main/java/com/example/oneul/infra/config/RedisConfig.java b/src/main/java/com/example/oneul/infra/config/RedisConfig.java
index 3fbb931..5677f3c 100644
--- a/src/main/java/com/example/oneul/infra/config/RedisConfig.java
+++ b/src/main/java/com/example/oneul/infra/config/RedisConfig.java
@@ -1,4 +1,4 @@
-package com.example.oneul.global.config;
+package com.example.oneul.infra.config;
 
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Bean;
diff --git a/src/main/java/com/example/oneul/global/util/BatchScheduler.java b/src/main/java/com/example/oneul/infra/util/BatchScheduler.java
similarity index 94%
rename from src/main/java/com/example/oneul/global/util/BatchScheduler.java
rename to src/main/java/com/example/oneul/infra/util/BatchScheduler.java
index e88dd17..351d8d5 100644
--- a/src/main/java/com/example/oneul/global/util/BatchScheduler.java
+++ b/src/main/java/com/example/oneul/infra/util/BatchScheduler.java
@@ -1,10 +1,8 @@
-package com.example.oneul.global.util;
+package com.example.oneul.infra.util;
 
 import java.util.HashMap;
 import java.util.Map;
 
-import com.example.oneul.global.config.BatchConfig;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.batch.core.JobParameter;
@@ -17,6 +15,8 @@ import org.springframework.batch.core.repository.JobRestartException;
 import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.stereotype.Component;
 
+import com.example.oneul.infra.config.BatchConfig;
+
 @Component
 public class BatchScheduler {
     private final Logger log = LoggerFactory.getLogger(BatchScheduler.class);