diff --git a/backend/ota_publish.py b/backend/ota_publish.py
new file mode 100644
index 0000000..8d89ec6
--- /dev/null
+++ b/backend/ota_publish.py
@@ -0,0 +1,108 @@
+import json
+from datetime import datetime
+from pathlib import Path
+from urllib.parse import urljoin
+
+import paramiko
+
+from backend.android_tools import find_apks
+from backend.projects_registry import find_project_by_workspace
+from backend.runtime_logs import add_log
+
+
+def _safe_name(value: str) -> str:
+    return value.strip().replace('/', '-').replace(' ', '-').lower()
+
+
+def _latest_json(settings: dict) -> dict:
+    notes_raw = settings.get('notes') or ''
+    notes = [line.strip() for line in notes_raw.splitlines() if line.strip()]
+    if not notes:
+        notes = ['Немного нового']
+
+    version = settings.get('version') or '0.0.1'
+    build = int(settings.get('build') or 1)
+    public_base_url = settings.get('public_base_url') or ''
+    latest_apk_name = settings.get('latest_apk_name') or 'pulse-latest.apk'
+    versioned_apk_name = settings.get('versioned_apk_name') or f'pulse-{version}+{build}.apk'
+
+    return {
+        'version': version,
+        'build': build,
+        'notes': notes,
+        'apk_url': urljoin(public_base_url.rstrip('/') + '/', latest_apk_name),
+        'versioned_apk_url': urljoin(public_base_url.rstrip('/') + '/', versioned_apk_name),
+    }
+
+
+def _mkdir_p_sftp(sftp, remote_path: str) -> None:
+    path = remote_path.strip('/')
+    if not path:
+        return
+    current = ''
+    for part in path.split('/'):
+        current += '/' + part
+        try:
+            sftp.stat(current)
+        except IOError:
+            sftp.mkdir(current)
+
+
+def publish_project_ota(workspace: str) -> dict:
+    project = find_project_by_workspace(workspace)
+    if not project:
+        return {'success': False, 'message': 'Project not found in registry'}
+
+    settings = project.get('ota') or {}
+    if not settings.get('enabled'):
+        return {'success': False, 'message': 'OTA publish disabled'}
+
+    apks = find_apks(workspace)
+    if not apks:
+        return {'success': False, 'message': 'APK not found'}
+
+    host = settings.get('sftp_host') or ''
+    username = settings.get('sftp_username') or ''
+    password = settings.get('sftp_password') or ''
+    remote_path = settings.get('remote_path') or ''
+
+    if not host or not username or not password or not remote_path:
+        return {'success': False, 'message': 'SFTP settings are incomplete'}
+
+    latest_apk_name = settings.get('latest_apk_name') or 'pulse-latest.apk'
+    version = settings.get('version') or '0.0.1'
+    build = int(settings.get('build') or 1)
+    versioned_apk_name = settings.get('versioned_apk_name') or f'pulse-{version}+{build}.apk'
+    latest_json_name = settings.get('latest_json_name') or 'latest.json'
+
+    latest_json = _latest_json(settings)
+    tmp_json = Path('/tmp') / f'devconsole-{_safe_name(project.get("name", "project"))}-latest.json'
+    tmp_json.write_text(json.dumps(latest_json, ensure_ascii=False, indent=4), encoding='utf-8')
+
+    apk_path = apks[0]
+
+    add_log(f'OTA publish started: {project.get("name")} -> {host}:{remote_path}')
+
+    transport = paramiko.Transport((host, int(settings.get('sftp_port') or 22)))
+    try:
+        transport.connect(username=username, password=password)
+        sftp = paramiko.SFTPClient.from_transport(transport)
+        remote_dir = '/' + remote_path.strip('/')
+        _mkdir_p_sftp(sftp, remote_dir)
+
+        sftp.put(apk_path, f'{remote_dir}/{latest_apk_name}')
+        sftp.put(apk_path, f'{remote_dir}/{versioned_apk_name}')
+        sftp.put(tmp_json.as_posix(), f'{remote_dir}/{latest_json_name}')
+        sftp.close()
+    finally:
+        transport.close()
+
+    add_log(f'OTA publish completed: {latest_json.get("apk_url")}')
+
+    return {
+        'success': True,
+        'apk': apk_path,
+        'latest_json': latest_json,
+        'uploaded': [latest_apk_name, versioned_apk_name, latest_json_name],
+        'published_at': datetime.utcnow().isoformat() + 'Z',
+    }