diff --git a/ui/src/components/StartupLogPanel.module.css b/ui/src/components/StartupLogPanel.module.css
index 4551ec5b..529a3a47 100644
--- a/ui/src/components/StartupLogPanel.module.css
+++ b/ui/src/components/StartupLogPanel.module.css
@@ -61,3 +61,15 @@
   font-size: 13px;
   color: var(--text-muted);
 }
+
+.headerRight {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+}
+
+.scrollWrap {
+  flex: 1;
+  min-height: 0;
+  overflow-y: auto;
+}
diff --git a/ui/src/components/StartupLogPanel.test.tsx b/ui/src/components/StartupLogPanel.test.tsx
new file mode 100644
index 00000000..8f679858
--- /dev/null
+++ b/ui/src/components/StartupLogPanel.test.tsx
@@ -0,0 +1,86 @@
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { render, screen, fireEvent, act } from '@testing-library/react';
+import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
+import { ThemeProvider } from '@cameleer/design-system';
+import type { ReactNode } from 'react';
+import { StartupLogPanel } from './StartupLogPanel';
+import type { Deployment } from '../api/queries/admin/apps';
+import * as logsModule from '../api/queries/logs';
+
+function wrap(ui: ReactNode) {
+  const qc = new QueryClient({ defaultOptions: { queries: { retry: false } } });
+  return render(
+    <ThemeProvider>
+      <QueryClientProvider client={qc}>{ui}</QueryClientProvider>
+    </ThemeProvider>,
+  );
+}
+
+const baseDep: Deployment = {
+  id: 'dep1', appId: 'a', appVersionId: 'v', environmentId: 'e',
+  status: 'STARTING', targetState: 'RUNNING', deploymentStrategy: 'BLUE_GREEN',
+  replicaStates: [], deployStage: 'START_REPLICAS',
+  containerId: null, containerName: null, errorMessage: null,
+  deployedAt: null, stoppedAt: null,
+  createdAt: '2026-04-23T10:00:00Z', createdBy: null,
+};
+
+const entries = [
+  { timestamp: '2026-04-23T10:00:01Z', level: 'INFO' as const, message: 'hello',
+    loggerName: null, threadName: null, stackTrace: null, exchangeId: null,
+    instanceId: null, application: null, mdc: null, source: 'container' as const },
+];
+
+describe('StartupLogPanel', () => {
+  beforeEach(() => { vi.restoreAllMocks(); });
+
+  it('passes default sort=desc to useStartupLogs', () => {
+    const spy = vi.spyOn(logsModule, 'useStartupLogs').mockReturnValue({
+      data: { data: entries, nextCursor: null, hasMore: false, levelCounts: {} },
+    } as ReturnType<typeof logsModule.useStartupLogs>);
+    wrap(<StartupLogPanel deployment={baseDep} appSlug="app" envSlug="dev" />);
+    expect(spy).toHaveBeenCalledWith('app', 'dev', '2026-04-23T10:00:00Z', true, 'desc');
+  });
+
+  it('toggle flips sort to asc', () => {
+    const spy = vi.spyOn(logsModule, 'useStartupLogs').mockReturnValue({
+      data: { data: entries, nextCursor: null, hasMore: false, levelCounts: {} },
+    } as ReturnType<typeof logsModule.useStartupLogs>);
+    wrap(<StartupLogPanel deployment={baseDep} appSlug="app" envSlug="dev" />);
+    fireEvent.click(screen.getByRole('button', { name: /oldest first|newest first/i }));
+    expect(spy).toHaveBeenLastCalledWith('app', 'dev', '2026-04-23T10:00:00Z', true, 'asc');
+  });
+
+  it('refresh button calls refetch', () => {
+    const refetch = vi.fn();
+    vi.spyOn(logsModule, 'useStartupLogs').mockReturnValue({
+      data: { data: entries, nextCursor: null, hasMore: false, levelCounts: {} },
+      refetch,
+    } as unknown as ReturnType<typeof logsModule.useStartupLogs>);
+    wrap(<StartupLogPanel deployment={baseDep} appSlug="app" envSlug="dev" />);
+    fireEvent.click(screen.getByRole('button', { name: /refresh/i }));
+    expect(refetch).toHaveBeenCalled();
+  });
+
+  it('scrolls to top after refresh when sort=desc', async () => {
+    const refetch = vi.fn().mockResolvedValue({});
+    vi.spyOn(logsModule, 'useStartupLogs').mockReturnValue({
+      data: { data: entries, nextCursor: null, hasMore: false, levelCounts: {} },
+      refetch,
+    } as unknown as ReturnType<typeof logsModule.useStartupLogs>);
+    const scrollTo = vi.fn();
+    const origScrollTo = Element.prototype.scrollTo;
+    Element.prototype.scrollTo = scrollTo as unknown as typeof Element.prototype.scrollTo;
+    try {
+      wrap(<StartupLogPanel deployment={baseDep} appSlug="app" envSlug="dev" />);
+      await act(async () => {
+        fireEvent.click(screen.getByRole('button', { name: /refresh/i }));
+        await Promise.resolve();
+      });
+      // default sort is desc → scroll to top (top === 0)
+      expect(scrollTo).toHaveBeenCalledWith(expect.objectContaining({ top: 0 }));
+    } finally {
+      Element.prototype.scrollTo = origScrollTo;
+    }
+  });
+});
diff --git a/ui/src/components/StartupLogPanel.tsx b/ui/src/components/StartupLogPanel.tsx
index 27e156ce..cc71b95e 100644
--- a/ui/src/components/StartupLogPanel.tsx
+++ b/ui/src/components/StartupLogPanel.tsx
@@ -1,5 +1,7 @@
-import { LogViewer } from '@cameleer/design-system';
+import { useRef, useState } from 'react';
+import { LogViewer, Button } from '@cameleer/design-system';
 import type { LogEntry } from '@cameleer/design-system';
+import { RefreshCw } from 'lucide-react';
 import { useStartupLogs } from '../api/queries/logs';
 import type { Deployment } from '../api/queries/admin/apps';
 import styles from './StartupLogPanel.module.css';
@@ -14,10 +16,24 @@ interface StartupLogPanelProps {
 export function StartupLogPanel({ deployment, appSlug, envSlug, className }: StartupLogPanelProps) {
   const isStarting = deployment.status === 'STARTING';
   const isFailed = deployment.status === 'FAILED';
+  const [sort, setSort] = useState<'asc' | 'desc'>('desc');
+  const scrollRef = useRef<HTMLDivElement>(null);
 
-  const { data } = useStartupLogs(appSlug, envSlug, deployment.createdAt, isStarting);
+  const query = useStartupLogs(appSlug, envSlug, deployment.createdAt, isStarting, sort);
+  const entries = query.data?.data ?? [];
 
-  const entries = data?.data ?? [];
+  const scrollToLatest = () => {
+    const el = scrollRef.current;
+    if (!el) return;
+    // asc → latest at bottom; desc → latest at top
+    const top = sort === 'asc' ? el.scrollHeight : 0;
+    el.scrollTo({ top, behavior: 'smooth' });
+  };
+
+  const handleRefresh = async () => {
+    await query.refetch?.();
+    scrollToLatest();
+  };
 
   if (entries.length === 0 && !isStarting) return null;
 
@@ -36,13 +52,35 @@ export function StartupLogPanel({ deployment, appSlug, envSlug, className }: Sta
             <span className={`${styles.badge} ${styles.badgeStopped}`}>stopped</span>
           )}
         </div>
-        <span className={styles.lineCount}>{entries.length} lines</span>
+        <div className={styles.headerRight}>
+          <span className={styles.lineCount}>{entries.length} entries</span>
+          <Button
+            variant="ghost"
+            size="sm"
+            onClick={() => setSort((s) => (s === 'asc' ? 'desc' : 'asc'))}
+            title={sort === 'asc' ? 'Oldest first' : 'Newest first'}
+            aria-label={sort === 'asc' ? 'Oldest first' : 'Newest first'}
+          >
+            {sort === 'asc' ? '\u2191' : '\u2193'}
+          </Button>
+          <Button
+            variant="ghost"
+            size="sm"
+            onClick={handleRefresh}
+            title="Refresh"
+            aria-label="Refresh"
+          >
+            <RefreshCw size={14} />
+          </Button>
+        </div>
+      </div>
+      <div ref={scrollRef} className={styles.scrollWrap}>
+        {entries.length > 0 ? (
+          <LogViewer entries={entries as unknown as LogEntry[]} />
+        ) : (
+          <div className={styles.empty}>Waiting for container output...</div>
+        )}
       </div>
-      {entries.length > 0 ? (
-        <LogViewer entries={entries as unknown as LogEntry[]} />
-      ) : (
-        <div className={styles.empty}>Waiting for container output...</div>
-      )}
     </div>
   );
 }