diff --git a/devfront/src/components/layout/AppLayout.tsx b/devfront/src/components/layout/AppLayout.tsx
index e0a1d7bb..469a9362 100644
--- a/devfront/src/components/layout/AppLayout.tsx
+++ b/devfront/src/components/layout/AppLayout.tsx
@@ -1,5 +1,11 @@
-import { BadgeCheck, LogOut, Moon, ShieldHalf, Sun } from "lucide-react";
-import { useEffect, useState } from "react";
+import {
+  BadgeCheck,
+  LogOut,
+  Moon,
+  ShieldHalf,
+  Sun,
+} from "lucide-react";
+import { useEffect, useRef, useState } from "react";
 import { useAuth } from "react-oidc-context";
 import { NavLink, Outlet, useNavigate } from "react-router-dom";
 import { t } from "../../lib/i18n";
@@ -18,10 +24,14 @@ const navItems = [
 function AppLayout() {
   const auth = useAuth();
   const navigate = useNavigate();
+  const profileMenuRef = useRef<HTMLDivElement>(null);
   const [theme, setTheme] = useState<"light" | "dark">(() => {
     const stored = window.localStorage.getItem("admin_theme");
     return stored === "dark" ? "dark" : "light";
   });
+  const [isProfileMenuOpen, setIsProfileMenuOpen] = useState(false);
+  const [isRefreshingSession, setIsRefreshingSession] = useState(false);
+  const [nowMs, setNowMs] = useState(() => Date.now());
 
   const handleLogout = () => {
     if (window.confirm(t("msg.dev.logout_confirm", "로그아웃 하시겠습니까?"))) {
@@ -41,10 +51,106 @@ function AppLayout() {
     window.localStorage.setItem("admin_theme", theme);
   }, [theme]);
 
+  useEffect(() => {
+    const timer = window.setInterval(() => {
+      setNowMs(Date.now());
+    }, 1000);
+    return () => {
+      window.clearInterval(timer);
+    };
+  }, []);
+
+  useEffect(() => {
+    const handleClickOutside = (event: MouseEvent) => {
+      if (
+        profileMenuRef.current &&
+        !profileMenuRef.current.contains(event.target as Node)
+      ) {
+        setIsProfileMenuOpen(false);
+      }
+    };
+
+    document.addEventListener("mousedown", handleClickOutside);
+    return () => {
+      document.removeEventListener("mousedown", handleClickOutside);
+    };
+  }, []);
+
   const toggleTheme = () => {
     setTheme((prev) => (prev === "light" ? "dark" : "light"));
   };
 
+  const profileName =
+    auth.user?.profile?.name?.toString().trim() ||
+    auth.user?.profile?.preferred_username?.toString().trim() ||
+    auth.user?.profile?.nickname?.toString().trim() ||
+    t("ui.dev.profile.unknown_name", "Unknown User");
+  const profileEmail =
+    auth.user?.profile?.email?.toString().trim() ||
+    t("ui.dev.profile.unknown_email", "unknown@example.com");
+  const profileInitial = profileName.charAt(0).toUpperCase();
+  const expiresAtSec = auth.user?.expires_at;
+  const remainingMs =
+    typeof expiresAtSec === "number" ? expiresAtSec * 1000 - nowMs : null;
+  const remainingTotalSec =
+    remainingMs !== null ? Math.max(0, Math.floor(remainingMs / 1000)) : null;
+  const remainingMinutes =
+    remainingTotalSec !== null ? Math.floor(remainingTotalSec / 60) : null;
+  const remainingSeconds =
+    remainingTotalSec !== null ? remainingTotalSec % 60 : null;
+
+  let sessionToneClass =
+    "border-emerald-500/30 bg-emerald-500/10 text-emerald-700 dark:text-emerald-300";
+  let sessionText = t("ui.dev.session.active", "세션 만료 시간 확인 중");
+
+  if (remainingMs === null) {
+    sessionToneClass =
+      "border-border bg-card text-muted-foreground";
+    sessionText = t("ui.dev.session.unknown", "세션 만료 시간 확인 불가");
+  } else if (remainingMs <= 0) {
+    sessionToneClass =
+      "border-rose-500/30 bg-rose-500/10 text-rose-700 dark:text-rose-300";
+    sessionText = t("ui.dev.session.expired", "세션 만료됨");
+  } else {
+    if (remainingMinutes !== null && remainingSeconds !== null && remainingMinutes <= 5) {
+      sessionToneClass =
+        "border-amber-500/30 bg-amber-500/10 text-amber-700 dark:text-amber-300";
+      sessionText = t(
+        "ui.dev.session.expiring",
+        "만료 임박: {{minutes}}분 {{seconds}}초 남음",
+        {
+        minutes: remainingMinutes,
+          seconds: remainingSeconds,
+        },
+      );
+    } else {
+      sessionText = t(
+        "ui.dev.session.remaining",
+        "만료까지 {{minutes}}분 {{seconds}}초",
+        {
+          minutes: remainingMinutes ?? 0,
+          seconds: remainingSeconds ?? 0,
+        },
+      );
+    }
+  }
+
+  const handleRefreshSessionExpiry = async () => {
+    if (isRefreshingSession) {
+      return;
+    }
+    setIsRefreshingSession(true);
+    try {
+      await auth.signinSilent();
+      setNowMs(Date.now());
+      setIsProfileMenuOpen(false);
+    } catch (error) {
+      console.error("Failed to refresh session expiry:", error);
+    } finally {
+      setIsRefreshingSession(false);
+    }
+  };
+
   return (
     <div className="grid min-h-screen bg-background text-foreground md:grid-cols-[240px,1fr]">
       <aside className="border-b border-border bg-card md:sticky md:top-0 md:h-screen md:border-b-0 md:border-r md:bg-card md:backdrop-blur flex flex-col justify-between">
@@ -141,6 +247,65 @@ function AppLayout() {
                   ? t("ui.common.theme_light", "Light")
                   : t("ui.common.theme_dark", "Dark")}
               </button>
+              <span
+                className={[
+                  "hidden rounded-full border px-3 py-2 text-xs font-medium md:inline-flex",
+                  sessionToneClass,
+                ].join(" ")}
+              >
+                {sessionText}
+              </span>
+              <div className="relative" ref={profileMenuRef}>
+                <button
+                  type="button"
+                  onClick={() => setIsProfileMenuOpen((prev) => !prev)}
+                  className="inline-flex items-center gap-3 rounded-full border border-border bg-card px-3 py-2 transition hover:bg-muted/20"
+                  aria-haspopup="menu"
+                  aria-expanded={isProfileMenuOpen}
+                  aria-label={t("ui.dev.profile.menu_aria", "계정 메뉴 열기")}
+                >
+                  <div className="grid h-8 w-8 place-items-center rounded-full bg-primary/15 text-xs font-semibold text-primary">
+                    {profileInitial}
+                  </div>
+                  <div className="hidden min-w-0 text-left md:block">
+                    <p className="truncate text-xs font-medium text-foreground">
+                      {profileName}
+                    </p>
+                    <p className="truncate text-[11px] text-muted-foreground">
+                      {profileEmail}
+                    </p>
+                  </div>
+                </button>
+                {isProfileMenuOpen ? (
+                  <div
+                    role="menu"
+                    className="absolute right-0 z-30 mt-2 w-72 rounded-xl border border-border bg-card p-3 shadow-xl"
+                  >
+                    <p className="text-xs uppercase tracking-[0.16em] text-muted-foreground">
+                      {t("ui.dev.profile.menu_title", "Account")}
+                    </p>
+                    <div className="mt-2 rounded-lg border border-border px-3 py-2">
+                      <p className="truncate text-sm font-semibold text-foreground">
+                        {profileName}
+                      </p>
+                      <p className="truncate text-xs text-muted-foreground">
+                        {profileEmail}
+                      </p>
+                    </div>
+                    <button
+                      type="button"
+                      role="menuitem"
+                      className="mt-2 w-full rounded-lg border border-border px-3 py-2 text-left text-sm text-foreground transition hover:bg-muted/20 disabled:cursor-not-allowed disabled:opacity-60"
+                      onClick={handleRefreshSessionExpiry}
+                      disabled={isRefreshingSession}
+                    >
+                      {isRefreshingSession
+                        ? t("ui.dev.session.refreshing", "세션 만료 시간 갱신 중...")
+                        : t("ui.dev.session.refresh", "세션 만료 시간 갱신")}
+                    </button>
+                  </div>
+                ) : null}
+              </div>
             </div>
           </div>
         </header>
diff --git a/docker/ory/hydra/hydra.yml b/docker/ory/hydra/hydra.yml
index 82f9fb37..7bf79b10 100644
--- a/docker/ory/hydra/hydra.yml
+++ b/docker/ory/hydra/hydra.yml
@@ -92,3 +92,7 @@ oidc:
             salt: youReallyNeedToChangeThis
     dynamic_client_registration:
         enabled: true
+
+ttl:
+    access_token: 15m
+    id_token: 15m