diff --git a/backend/src/index.ts b/backend/src/index.ts
index 75f25c6..da9534b 100644
--- a/backend/src/index.ts
+++ b/backend/src/index.ts
@@ -18,6 +18,8 @@ import { healthTracker } from './services/healthTracker.js';
 import { observabilityService } from './services/observabilityService.js';
 import { reconciliationService } from './services/reconciliationService.js';
 import { reconciliationWatchdogAutoResumeService } from './services/reconciliationWatchdogAutoResumeService.js';
+import { listActiveTradeProfiles } from './services/profileRepository.js';
+import { listActiveTradingUsers } from './services/userRepository.js';
 
 async function main() {
     logger.info(`Starting ${config.PRODUCT_ID} trading backend...`);
@@ -46,7 +48,7 @@ async function main() {
     }
     // --- 0. Load User Configuration (Supabase) ---
     logger.info('Fetching active users from Supabase...');
-    const users = await supabaseService.getActiveUsers();
+    let users = await listActiveTradingUsers(supabaseService);
 
     // --- 1. Identify Primary Key (for Data Fetching) ---
     const isPlaceholder = (val: string) => !val || val === 'your_key' || val === 'your_secret';
@@ -261,7 +263,7 @@ async function main() {
     }
 
     // --- 0. Initialize Signal Subscribers (Users & Profiles) ---
-    const profiles = await supabaseService.getActiveProfiles();
+    const profiles = await listActiveTradeProfiles(supabaseService);
 
     if (profiles.length > 0) {
         logger.info(`👥 Initializing Execution Managers for ${profiles.length} Trade Profiles...`);
@@ -393,7 +395,8 @@ async function main() {
     // --- PROFILE HOT-RELOAD: Sync new/updated/deactivated profiles periodically ---
     setInterval(async () => {
         try {
-            const latestProfiles = await supabaseService.getActiveProfiles();
+            users = await listActiveTradingUsers(supabaseService);
+            const latestProfiles = await listActiveTradeProfiles(supabaseService);
             const currentIds = new Set(userContexts.map(c => c.profileId));
             const latestIds = new Set(latestProfiles.map((p: any) => p.id));
 
diff --git a/backend/src/services/userRepository.ts b/backend/src/services/userRepository.ts
new file mode 100644
index 0000000..98a3ac9
--- /dev/null
+++ b/backend/src/services/userRepository.ts
@@ -0,0 +1,52 @@
+import logger from '../utils/logger.js';
+import type { UserConfig, supabaseService } from './SupabaseService.js';
+
+type LegacySupabaseService = typeof supabaseService;
+
+function normalizeUser(row: Partial<UserConfig> | null | undefined): UserConfig | null {
+    const userId = String(row?.user_id || '').trim();
+    if (!userId) {
+        return null;
+    }
+
+    return {
+        user_id: userId,
+        first_name: String(row?.first_name || ''),
+        last_name: String(row?.last_name || ''),
+        email: String(row?.email || ''),
+        ALPACA_API_KEY: String(row?.ALPACA_API_KEY || ''),
+        ALPACA_SECRET_KEY: String(row?.ALPACA_SECRET_KEY || ''),
+        REAL_ALPACA_API_KEY: String(row?.REAL_ALPACA_API_KEY || ''),
+        REAL_ALPACA_SECRET_KEY: String(row?.REAL_ALPACA_SECRET_KEY || ''),
+        role: String(row?.role || 'member'),
+        trade_enable: Boolean(row?.trade_enable),
+        drop_threshold_for_buy: Number(row?.drop_threshold_for_buy || 0),
+        gain_threshold_for_sell: Number(row?.gain_threshold_for_sell || 0),
+        market_poll_interval_in_seconds: Number(row?.market_poll_interval_in_seconds || 0),
+    };
+}
+
+export async function listActiveTradingUsers(legacyService?: LegacySupabaseService): Promise<UserConfig[]> {
+    const client = legacyService?.getClient?.();
+    if (!client) {
+        return [];
+    }
+
+    try {
+        const { data, error } = await client
+            .from('users')
+            .select('*')
+            .eq('trade_enable', true);
+
+        if (error || !Array.isArray(data)) {
+            return [];
+        }
+
+        return data
+            .map((row) => normalizeUser(row as UserConfig))
+            .filter((user): user is UserConfig => Boolean(user));
+    } catch (error) {
+        logger.warn(`[Users] Active trading user lookup failed: ${error instanceof Error ? error.message : 'unknown error'}`);
+        return [];
+    }
+}