diff --git a/backend-node/src/controllers/screenGroupController.ts b/backend-node/src/controllers/screenGroupController.ts
index 1c73d88a..18d8bfb5 100644
--- a/backend-node/src/controllers/screenGroupController.ts
+++ b/backend-node/src/controllers/screenGroupController.ts
@@ -2,6 +2,7 @@ import { Request, Response } from "express";
 import { getPool } from "../database/db";
 import { logger } from "../utils/logger";
 import { MultiLangService } from "../services/multilangService";
+import { AuthenticatedRequest } from "../types/auth";
 
 // pool 인스턴스 가져오기
 const pool = getPool();
@@ -645,9 +646,9 @@ export const deleteFieldJoin = async (req: Request, res: Response) => {
 // ============================================================
 
 // 데이터 흐름 목록 조회
-export const getDataFlows = async (req: Request, res: Response) => {
+export const getDataFlows = async (req: AuthenticatedRequest, res: Response) => {
   try {
-    const companyCode = (req.user as any).companyCode;
+    const companyCode = req.user!.companyCode;
     const { group_id, source_screen_id } = req.query;
 
     let query = `
@@ -695,10 +696,10 @@ export const getDataFlows = async (req: Request, res: Response) => {
 };
 
 // 데이터 흐름 생성
-export const createDataFlow = async (req: Request, res: Response) => {
+export const createDataFlow = async (req: AuthenticatedRequest, res: Response) => {
   try {
-    const companyCode = (req.user as any).companyCode;
-    const userId = (req.user as any).userId;
+    const companyCode = req.user!.companyCode;
+    const userId = req.user!.userId;
     const { 
       group_id, source_screen_id, source_action, target_screen_id, target_action,
       data_mapping, flow_type, flow_label, condition_expression, is_active
@@ -734,10 +735,10 @@ export const createDataFlow = async (req: Request, res: Response) => {
 };
 
 // 데이터 흐름 수정
-export const updateDataFlow = async (req: Request, res: Response) => {
+export const updateDataFlow = async (req: AuthenticatedRequest, res: Response) => {
   try {
     const { id } = req.params;
-    const companyCode = (req.user as any).companyCode;
+    const companyCode = req.user!.companyCode;
     const { 
       group_id, source_screen_id, source_action, target_screen_id, target_action,
       data_mapping, flow_type, flow_label, condition_expression, is_active
@@ -777,10 +778,10 @@ export const updateDataFlow = async (req: Request, res: Response) => {
 };
 
 // 데이터 흐름 삭제
-export const deleteDataFlow = async (req: Request, res: Response) => {
+export const deleteDataFlow = async (req: AuthenticatedRequest, res: Response) => {
   try {
     const { id } = req.params;
-    const companyCode = (req.user as any).companyCode;
+    const companyCode = req.user!.companyCode;
 
     let query = `DELETE FROM screen_data_flows WHERE id = $1`;
     const params: any[] = [id];
@@ -811,9 +812,9 @@ export const deleteDataFlow = async (req: Request, res: Response) => {
 // ============================================================
 
 // 화면-테이블 관계 목록 조회
-export const getTableRelations = async (req: Request, res: Response) => {
+export const getTableRelations = async (req: AuthenticatedRequest, res: Response) => {
   try {
-    const companyCode = (req.user as any).companyCode;
+    const companyCode = req.user!.companyCode;
     const { screen_id, group_id } = req.query;
 
     let query = `
@@ -860,10 +861,10 @@ export const getTableRelations = async (req: Request, res: Response) => {
 };
 
 // 화면-테이블 관계 생성
-export const createTableRelation = async (req: Request, res: Response) => {
+export const createTableRelation = async (req: AuthenticatedRequest, res: Response) => {
   try {
-    const companyCode = (req.user as any).companyCode;
-    const userId = (req.user as any).userId;
+    const companyCode = req.user!.companyCode;
+    const userId = req.user!.userId;
     const { group_id, screen_id, table_name, relation_type, crud_operations, description, is_active } = req.body;
 
     if (!screen_id || !table_name) {
@@ -893,10 +894,10 @@ export const createTableRelation = async (req: Request, res: Response) => {
 };
 
 // 화면-테이블 관계 수정
-export const updateTableRelation = async (req: Request, res: Response) => {
+export const updateTableRelation = async (req: AuthenticatedRequest, res: Response) => {
   try {
     const { id } = req.params;
-    const companyCode = (req.user as any).companyCode;
+    const companyCode = req.user!.companyCode;
     const { group_id, table_name, relation_type, crud_operations, description, is_active } = req.body;
 
     let query = `
@@ -928,10 +929,10 @@ export const updateTableRelation = async (req: Request, res: Response) => {
 };
 
 // 화면-테이블 관계 삭제
-export const deleteTableRelation = async (req: Request, res: Response) => {
+export const deleteTableRelation = async (req: AuthenticatedRequest, res: Response) => {
   try {
     const { id } = req.params;
-    const companyCode = (req.user as any).companyCode;
+    const companyCode = req.user!.companyCode;
 
     let query = `DELETE FROM screen_table_relations WHERE id = $1`;
     const params: any[] = [id];