diff --git a/frontend/services/application/member.service.ts b/frontend/services/application/member.service.ts
new file mode 100644
index 00000000..ba8a6381
--- /dev/null
+++ b/frontend/services/application/member.service.ts
@@ -0,0 +1,44 @@
+import { MemberItem } from '@/models/member'
+import { MemberItemListRepository } from '@/repositories/member/interface'
+
+export class MemberDTO {
+  id: number
+  user: number
+  role: number
+  username: string
+  rolename: string
+
+  constructor(item: MemberItem) {
+    this.id = item.id
+    this.user = item.user
+    this.role = item.role
+    this.username = item.username
+    this.rolename = item.rolename
+  }
+}
+
+export class MemberApplicationService {
+  constructor(
+    private readonly repository: MemberItemListRepository
+  ) {}
+
+  public async list(id: string): Promise<MemberDTO[]> {
+    const items = await this.repository.list(id)
+    return items.map(item => new MemberDTO(item))
+  }
+
+  public create(projectId: string, item: MemberDTO): void {
+    const member = new MemberItem(0, item.user, item.role, item.username, item.rolename)
+    this.repository.create(projectId, member)
+  }
+
+  public update(projectId: string, item: MemberDTO): void {
+    const member = new MemberItem(item.id, item.user, item.role, item.username, item.rolename)
+    this.repository.update(projectId, member)
+  }
+
+  public bulkDelete(projectId: string, items: MemberDTO[]): Promise<void> {
+    const ids = items.map(item => item.id)
+    return this.repository.bulkDelete(projectId, ids)
+  }
+}