diff --git a/.env.sample b/.env.sample
index 5233fbac..505020cb 100644
--- a/.env.sample
+++ b/.env.sample
@@ -35,6 +35,9 @@ CORS_ALLOWED_ORIGINS=http://localhost:5000 # 쿠키 인증 사용 시 정확한
 AUDIT_WORKER_COUNT=5      # 비동기 감사 로그 처리를 위한 고루틴 워커 수
 AUDIT_QUEUE_SIZE=2000      # 감사 로그 대기열(채널) 버퍼 크기
 
+# Redis Cache Configuration
+PROFILE_CACHE_TTL=30m     # User Profile Redis 캐시 만료 시간
+
 # Descope Project ID (Required for Auth)
 DESCOPE_PROJECT_ID=P2t...your_descope_project_id
 DESCOPE_MANAGEMENT_KEY=your_descope_management_key_here
diff --git a/backend/internal/handler/auth_handler.go b/backend/internal/handler/auth_handler.go
index 3dd9c7e4..43ea6901 100644
--- a/backend/internal/handler/auth_handler.go
+++ b/backend/internal/handler/auth_handler.go
@@ -3807,8 +3807,14 @@ func (h *AuthHandler) resolveCurrentProfile(c *fiber.Ctx) (*domain.UserProfileRe
 	// 4. Save to Redis Cache (Short TTL)
 	if h.RedisService != nil && cacheKey != "" {
 		if data, err := json.Marshal(profile); err == nil {
-			// TTL: 1 minute to balance consistency and performance
-			_ = h.RedisService.Set(cacheKey, string(data), 1*time.Minute)
+			ttlStr := os.Getenv("PROFILE_CACHE_TTL")
+			ttl := 30 * time.Minute // Default TTL
+			if ttlStr != "" {
+				if parsed, err := time.ParseDuration(ttlStr); err == nil {
+					ttl = parsed
+				}
+			}
+			_ = h.RedisService.Set(cacheKey, string(data), ttl)
 		}
 	}