diff --git a/support-portal-backend/src/main/java/net/shyshkin/study/fullstack/supportportal/backend/domain/dto/UserDto.java b/support-portal-backend/src/main/java/net/shyshkin/study/fullstack/supportportal/backend/domain/dto/UserDto.java
new file mode 100644
index 0000000..e61b6fc
--- /dev/null
+++ b/support-portal-backend/src/main/java/net/shyshkin/study/fullstack/supportportal/backend/domain/dto/UserDto.java
@@ -0,0 +1,22 @@
+package net.shyshkin.study.fullstack.supportportal.backend.domain.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import org.springframework.web.multipart.MultipartFile;
+
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@Builder
+public class UserDto {
+    private String firstName;
+    private String lastName;
+    private String username;
+    private String email;
+    private String role;
+    private boolean isNonLocked;
+    private boolean isActive;
+    private MultipartFile profileImage;
+}
diff --git a/support-portal-backend/src/main/java/net/shyshkin/study/fullstack/supportportal/backend/service/UserService.java b/support-portal-backend/src/main/java/net/shyshkin/study/fullstack/supportportal/backend/service/UserService.java
index 6ee1d49..450a893 100644
--- a/support-portal-backend/src/main/java/net/shyshkin/study/fullstack/supportportal/backend/service/UserService.java
+++ b/support-portal-backend/src/main/java/net/shyshkin/study/fullstack/supportportal/backend/service/UserService.java
@@ -1,7 +1,9 @@
 package net.shyshkin.study.fullstack.supportportal.backend.service;
 
 import net.shyshkin.study.fullstack.supportportal.backend.domain.User;
+import net.shyshkin.study.fullstack.supportportal.backend.domain.dto.UserDto;
 import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.web.multipart.MultipartFile;
 
 import java.util.List;
 
@@ -15,4 +17,14 @@ public interface UserService extends UserDetailsService {
 
     User findByEmail(String email);
 
+    User addNewUser(UserDto userDto);
+
+    User updateUser(String username, UserDto userDto);
+
+    void deleteUser(long id);
+
+    void resetPassword(String email);
+
+    User updateProfileImage(String username, MultipartFile profileImage);
+
 }