diff --git a/app/pages/admin/index.vue b/app/pages/admin/index.vue
index 2bc01de..0ebad13 100644
--- a/app/pages/admin/index.vue
+++ b/app/pages/admin/index.vue
@@ -264,37 +264,79 @@
                   :key="user.id"
                   class="border border-white/10 bg-black/40"
                 >
-                  <v-card-text class="flex flex-col gap-4 md:flex-row md:items-center md:justify-between">
-                    <div class="space-y-1">
-                      <p class="text-sm text-white/50">{{ formatDateTime(user.createdAt) }}</p>
-                      <h3 class="text-lg font-semibold">{{ user.email }}</h3>
-                      <p v-if="user.name" class="text-sm text-white/60">{{ user.name }}</p>
-                      <div class="flex flex-wrap gap-2 text-xs text-white/50">
-                        <span>Invitations created: {{ user.invitationCodesIssued }}</span>
-                        <span v-if="user.lastLoginAt">Last login: {{ formatRelative(user.lastLoginAt) }}</span>
+                  <v-card-text class="space-y-4">
+                    <div class="flex flex-col gap-4 md:flex-row md:items-center md:justify-between">
+                      <div class="space-y-1">
+                        <p class="text-sm text-white/50">{{ formatDateTime(user.createdAt) }}</p>
+                        <h3 class="text-lg font-semibold">{{ user.email }}</h3>
+                        <p v-if="user.name" class="text-sm text-white/60">{{ user.name }}</p>
+                        <div class="flex flex-wrap gap-2 text-xs text-white/50">
+                          <span>Invitations created: {{ user.invitationCodesIssued }}</span>
+                          <span v-if="user.lastLoginAt">Last login: {{ formatRelative(user.lastLoginAt) }}</span>
+                        </div>
+                      </div>
+                      <div class="flex flex-col items-start gap-2 md:w-48 md:items-end">
+                        <v-select
+                          v-model="userRoleDraft[user.id]"
+                          :items="userRoleEditOptions"
+                          label="Role"
+                          density="comfortable"
+                          variant="outlined"
+                          color="cyan"
+                          hide-details
+                          class="w-44 md:w-full"
+                        />
+                        <v-btn
+                          color="cyan"
+                          variant="flat"
+                          size="small"
+                          :loading="userRoleUpdating === user.id"
+                          :disabled="userRoleDraft[user.id] === user.role"
+                          @click="applyRoleChange(user.id)"
+                        >
+                          Update role
+                        </v-btn>
                       </div>
                     </div>
-                    <div class="flex flex-col items-start gap-2 md:items-end">
-                      <v-select
-                        v-model="userRoleDraft[user.id]"
-                        :items="userRoleEditOptions"
-                        label="Role"
-                        density="comfortable"
+                    <v-divider class="border-white/10" />
+                    <div class="flex flex-col gap-3 md:flex-row md:items-end md:justify-between">
+                      <v-textarea
+                        v-model="userNotesDraft[user.id]"
+                        label="Internal notes"
+                        auto-grow
+                        rows="2"
                         variant="outlined"
+                        density="comfortable"
                         color="cyan"
-                        hide-details
-                        class="w-44"
+                        :counter="2000"
+                        maxlength="2000"
+                        hide-details="auto"
+                        class="md:flex-1"
                       />
-                      <v-btn
-                        color="cyan"
-                        variant="flat"
-                        size="small"
-                        :loading="userRoleUpdating === user.id"
-                        :disabled="userRoleDraft[user.id] === user.role"
-                        @click="applyRoleChange(user.id)"
-                      >
-                        Update role
-                      </v-btn>
+                      <div class="flex flex-col gap-2 md:w-48">
+                        <v-btn
+                          color="cyan"
+                          variant="tonal"
+                          size="small"
+                          prepend-icon="mdi-content-save-outline"
+                          :loading="userNotesSaving === user.id"
+                          :disabled="(userNotesDraft[user.id] || '') === (user.adminNotes || '')"
+                          @click="saveUserNotes(user.id)"
+                        >
+                          Save notes
+                        </v-btn>
+                        <v-btn
+                          v-if="user.role === 'user'"
+                          color="red"
+                          variant="text"
+                          size="small"
+                          prepend-icon="mdi-delete-outline"
+                          :loading="userDeleteLoading === user.id"
+                          @click="deleteUserAccount(user)"
+                        >
+                          Delete user
+                        </v-btn>
+                      </div>
                     </div>
                   </v-card-text>
                 </v-card>
@@ -1224,6 +1266,7 @@ interface OverviewData {
 
 interface AdminUser extends OverviewUser {
   invitationCodesIssued: number
+  adminNotes?: string
 }
 
 interface UsersResponse {
@@ -1232,6 +1275,11 @@ interface UsersResponse {
   roles: { user: number; admin: number; dev: number }
 }
 
+interface UpdateNotesResponse {
+  success: boolean
+  notes: string
+}
+
 interface InvitationItem extends OverviewInvitation {
   createdBy?: { id: string; email: string; name?: string; role: string }
   usedBy?: { id: string; email: string; name?: string; role: string }
@@ -1424,6 +1472,9 @@ const userRoleEditOptions = [
 ]
 const userRoleUpdating = ref<string | null>(null)
 const userRoleDraft = reactive<Record<string, 'user' | 'admin' | 'dev'>>({})
+const userNotesDraft = reactive<Record<string, string>>({})
+const userNotesSaving = ref<string | null>(null)
+const userDeleteLoading = ref<string | null>(null)
 
 const invitations = ref<InvitationItem[]>([])
 const invitationPagination = reactive({ total: 0, page: 1, pages: 1, pageSize: 12 })
@@ -1699,8 +1750,15 @@ async function fetchUsers(resetPage = false) {
     if (userRoleFilter.value !== 'all') query.role = userRoleFilter.value
     const response = await api.get<UsersResponse>('/api/admin/users', { query })
     users.value = response.items
+    const itemIds = new Set(response.items.map((user) => user.id))
+    Object.keys(userNotesDraft).forEach((key) => {
+      if (!itemIds.has(key)) {
+        delete userNotesDraft[key]
+      }
+    })
     response.items.forEach((user) => {
       userRoleDraft[user.id] = user.role as 'user' | 'admin' | 'dev'
+      userNotesDraft[user.id] = user.adminNotes ?? ''
     })
     Object.assign(userPagination, response.pagination)
     Object.assign(userRoleStats, response.roles)
@@ -1736,6 +1794,47 @@ async function applyRoleChange(userId: string) {
   }
 }
 
+async function saveUserNotes(userId: string) {
+  userNotesSaving.value = userId
+  try {
+    const notes = userNotesDraft[userId] ?? ''
+    const response = await api.request<UpdateNotesResponse>(`/api/admin/users/${userId}/notes`, {
+      method: 'PATCH',
+      body: { notes },
+    })
+    const target = users.value.find((u) => u.id === userId)
+    if (target) {
+      target.adminNotes = response.notes
+    }
+    userNotesDraft[userId] = response.notes
+  } catch (error) {
+    userError.value = extractErrorMessage(error, 'Could not save notes.')
+  } finally {
+    userNotesSaving.value = null
+  }
+}
+
+async function deleteUserAccount(user: AdminUser) {
+  if (typeof window !== 'undefined') {
+    const confirmed = window.confirm(`Delete user ${user.email}? This action cannot be undone.`)
+    if (!confirmed) return
+  }
+
+  userDeleteLoading.value = user.id
+  try {
+    await api.request(`/api/admin/users/${user.id}`, { method: 'DELETE' })
+    const shouldMoveBack = users.value.length === 1 && userPagination.page > 1
+    if (shouldMoveBack) {
+      userPagination.page -= 1
+    }
+    await fetchUsers()
+  } catch (error) {
+    userError.value = extractErrorMessage(error, 'Could not delete user.')
+  } finally {
+    userDeleteLoading.value = null
+  }
+}
+
 async function fetchInvitations(resetPage = false) {
   if (resetPage) {
     invitationPagination.page = 1
diff --git a/server/api/admin/users.get.ts b/server/api/admin/users.get.ts
index eb47fa3..8ad8243 100644
--- a/server/api/admin/users.get.ts
+++ b/server/api/admin/users.get.ts
@@ -11,6 +11,7 @@ type UserListItem = {
   createdAt: string
   lastLoginAt?: string
   invitationCodesIssued: number
+  adminNotes?: string
 }
 
 function mapUser(doc: any): UserListItem {
@@ -22,6 +23,7 @@ function mapUser(doc: any): UserListItem {
     createdAt: doc.createdAt ? new Date(doc.createdAt).toISOString() : new Date().toISOString(),
     lastLoginAt: doc.lastLoginAt ? new Date(doc.lastLoginAt).toISOString() : undefined,
     invitationCodesIssued: doc.invitationCodesIssued || 0,
+    adminNotes: doc.adminNotes || '',
   }
 }
 
diff --git a/server/api/admin/users/[id]/index.delete.ts b/server/api/admin/users/[id]/index.delete.ts
new file mode 100644
index 0000000..4c3fce9
--- /dev/null
+++ b/server/api/admin/users/[id]/index.delete.ts
@@ -0,0 +1,40 @@
+import { createError, defineEventHandler } from 'h3'
+import { requireAdmin } from '../../../../utils/auth'
+import { User } from '../../../../models/User'
+import { LearnProfile } from '../../../../models/LearnProfile'
+import { BridgeToken } from '../../../../models/BridgeToken'
+import { PasswordResetToken } from '../../../../models/PasswordResetToken'
+
+export default defineEventHandler(async (event) => {
+  const admin = await requireAdmin(event)
+
+  const params = event.context.params as { id?: string }
+  const userId = params?.id
+
+  if (!userId) {
+    throw createError({ statusCode: 400, statusMessage: 'Missing user ID' })
+  }
+
+  if (String(admin._id) === userId) {
+    throw createError({ statusCode: 400, statusMessage: 'You cannot delete your own account.' })
+  }
+
+  const user = await User.findById(userId)
+  if (!user) {
+    throw createError({ statusCode: 404, statusMessage: 'User not found' })
+  }
+
+  if (user.role !== 'user') {
+    throw createError({ statusCode: 400, statusMessage: 'Only regular user accounts can be deleted.' })
+  }
+
+  await Promise.all([
+    LearnProfile.deleteOne({ user: user._id }).catch(() => null),
+    BridgeToken.deleteMany({ user: user._id }).catch(() => null),
+    PasswordResetToken.deleteMany({ user: user._id }).catch(() => null),
+  ])
+
+  await user.deleteOne()
+
+  return { success: true }
+})
diff --git a/server/api/admin/users/[id]/notes.patch.ts b/server/api/admin/users/[id]/notes.patch.ts
new file mode 100644
index 0000000..27279f4
--- /dev/null
+++ b/server/api/admin/users/[id]/notes.patch.ts
@@ -0,0 +1,39 @@
+import { createError, defineEventHandler, readBody } from 'h3'
+import { requireAdmin } from '../../../../utils/auth'
+import { User } from '../../../../models/User'
+
+interface UpdateNotesBody {
+  notes?: string
+}
+
+export default defineEventHandler(async (event) => {
+  await requireAdmin(event)
+
+  const params = event.context.params as { id?: string }
+  const userId = params?.id
+
+  if (!userId) {
+    throw createError({ statusCode: 400, statusMessage: 'Missing user ID' })
+  }
+
+  const body = await readBody<UpdateNotesBody>(event).catch(() => ({}))
+  const rawNotes = typeof body.notes === 'string' ? body.notes.replace(/\r\n/g, '\n') : ''
+  const notes = rawNotes.trim()
+
+  if (notes.length > 2000) {
+    throw createError({ statusCode: 400, statusMessage: 'Notes are too long (max 2000 characters).' })
+  }
+
+  const user = await User.findById(userId)
+  if (!user) {
+    throw createError({ statusCode: 404, statusMessage: 'User not found' })
+  }
+
+  user.adminNotes = notes
+  await user.save()
+
+  return {
+    success: true,
+    notes: user.adminNotes || '',
+  }
+})
diff --git a/server/models/User.ts b/server/models/User.ts
index 65c71c0..2651e20 100644
--- a/server/models/User.ts
+++ b/server/models/User.ts
@@ -13,6 +13,7 @@ export interface UserDocument extends mongoose.Document {
   invitationCodesIssued: number
   acceptedTermsAt: Date
   acceptedPrivacyAt: Date
+  adminNotes?: string
 }
 
 const userSchema = new mongoose.Schema<UserDocument>({
@@ -26,6 +27,7 @@ const userSchema = new mongoose.Schema<UserDocument>({
   invitationCodesIssued: { type: Number, default: 0 },
   acceptedTermsAt: { type: Date, required: true },
   acceptedPrivacyAt: { type: Date, required: true },
+  adminNotes: { type: String, trim: true, default: '' },
 })
 
 export const User =