diff --git a/core/src/main/java/hexagonal/core/domain/jpa/MemberJpaEntity.java b/core/src/main/java/hexagonal/core/domain/jpa/MemberJpaEntity.java
index 8083bf7..42a7055 100644
--- a/core/src/main/java/hexagonal/core/domain/jpa/MemberJpaEntity.java
+++ b/core/src/main/java/hexagonal/core/domain/jpa/MemberJpaEntity.java
@@ -1,6 +1,7 @@
 package hexagonal.core.domain.jpa;
 
 import lombok.AllArgsConstructor;
+import lombok.Builder;
 import lombok.Data;
 import lombok.NoArgsConstructor;
 
@@ -11,6 +12,7 @@
 @Data
 @AllArgsConstructor
 @NoArgsConstructor
+@Builder
 public class MemberJpaEntity {
 
     @Id
@@ -20,6 +22,9 @@ public class MemberJpaEntity {
     @Column
     private String name;
 
+    @Column
+    private String email;
+
     @Column
     private String type;
 }
diff --git a/core/src/main/java/hexagonal/core/repository/MemberRepository.java b/core/src/main/java/hexagonal/core/repository/MemberRepository.java
new file mode 100644
index 0000000..11fbfc3
--- /dev/null
+++ b/core/src/main/java/hexagonal/core/repository/MemberRepository.java
@@ -0,0 +1,12 @@
+package hexagonal.core.repository;
+
+import hexagonal.core.domain.jpa.MemberJpaEntity;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.Optional;
+
+@Repository
+public interface MemberRepository extends JpaRepository<MemberJpaEntity, Long> {
+    Optional<MemberJpaEntity> findByEmail(String email);
+}