diff --git a/frontend/components/admin/AdminRoleTab.vue b/frontend/components/admin/AdminRoleTab.vue
new file mode 100644
index 0000000..c36a706
--- /dev/null
+++ b/frontend/components/admin/AdminRoleTab.vue
@@ -0,0 +1,116 @@
+<template>
+    <div>
+        <div class="flex items-center justify-between">
+            <h2 class="text-lg font-bold text-neutral-900">{{ $t('admin.roles.title') }}</h2>
+            <MalioButton
+                icon-name="mdi:plus"
+                icon-position="left"
+                button-class="w-auto px-4"
+                :label="$t('admin.roles.addRole')"
+                @click="openCreate"
+            />
+        </div>
+
+        <DataTable
+            :columns="columns"
+            :items="items"
+            :loading="isLoading"
+            :empty-message="$t('admin.roles.empty')"
+            @row-click="openEdit"
+        >
+            <template #cell-isSystem="{ item }">
+                <span
+                    v-if="item.isSystem"
+                    class="rounded-full bg-primary-100 px-2 py-0.5 text-xs font-semibold text-primary-600"
+                >
+                    {{ $t('admin.roles.system') }}
+                </span>
+            </template>
+            <template #cell-permissions="{ item }">
+                <span class="text-neutral-600">{{ item.permissions.length }}</span>
+            </template>
+            <template #actions="{ item }">
+                <MalioButtonIcon
+                    v-if="!item.isSystem"
+                    icon="mdi:delete-outline"
+                    :aria-label="$t('common.delete')"
+                    variant="ghost"
+                    icon-size="20"
+                    button-class="text-neutral-400 hover:text-red-500"
+                    @click.stop="handleDelete(item.id)"
+                />
+            </template>
+        </DataTable>
+
+        <RoleDrawer
+            v-model="drawerOpen"
+            :item="selectedItem"
+            :permissions="permissions"
+            @saved="onSaved"
+        />
+    </div>
+</template>
+
+<script setup lang="ts">
+import type { Role } from '~/modules/core/services/roles'
+import { useRoleService } from '~/modules/core/services/roles'
+import type { Permission } from '~/modules/core/services/permissions'
+import { usePermissionService } from '~/modules/core/services/permissions'
+
+import type { DataTableColumn } from '~/components/ui/DataTable.vue'
+
+const { t } = useI18n()
+
+const columns = computed<DataTableColumn[]>(() => [
+    { key: 'label', label: t('admin.roles.label'), primary: true },
+    { key: 'code', label: t('admin.roles.code') },
+    { key: 'permissions', label: t('admin.roles.permissions') },
+    { key: 'isSystem', label: '' },
+])
+
+const roleService = useRoleService()
+const permissionService = usePermissionService()
+
+const items = ref<Role[]>([])
+const permissions = ref<Permission[]>([])
+const isLoading = ref(true)
+const drawerOpen = ref(false)
+const selectedItem = ref<Role | null>(null)
+
+async function loadItems() {
+    isLoading.value = true
+    try {
+        items.value = await roleService.list()
+    } finally {
+        isLoading.value = false
+    }
+}
+
+async function loadPermissions() {
+    permissions.value = await permissionService.list()
+}
+
+function openCreate() {
+    selectedItem.value = null
+    drawerOpen.value = true
+}
+
+function openEdit(item: Role) {
+    selectedItem.value = item
+    drawerOpen.value = true
+}
+
+async function handleDelete(id: number) {
+    await roleService.remove(id)
+    await loadItems()
+}
+
+async function onSaved() {
+    await loadItems()
+}
+
+onMounted(() => {
+    loadItems()
+    loadPermissions()
+})
+</script>
diff --git a/frontend/components/admin/RoleDrawer.vue b/frontend/components/admin/RoleDrawer.vue
new file mode 100644
index 0000000..4db0dc5
--- /dev/null
+++ b/frontend/components/admin/RoleDrawer.vue
@@ -0,0 +1,186 @@
+<template>
+    <MalioDrawer v-model="isOpen">
+        <template #header>
+            <h2 class="text-xl font-bold">
+                {{ isEditing ? $t('admin.roles.editRole') : $t('admin.roles.addRole') }}
+            </h2>
+        </template>
+        <form class="flex flex-col gap-3" @submit.prevent="handleSubmit">
+            <MalioInputText
+                v-model="form.code"
+                :label="$t('admin.roles.code')"
+                input-class="w-full"
+                :disabled="isEditing"
+                :hint="isEditing ? $t('admin.roles.codeImmutable') : $t('admin.roles.codeHint')"
+                :error="touched.code && !codeValid ? $t('admin.roles.codeInvalid') : ''"
+                @blur="touched.code = true"
+            />
+            <MalioInputText
+                v-model="form.label"
+                :label="$t('admin.roles.label')"
+                input-class="w-full"
+                :error="touched.label && !form.label.trim() ? $t('admin.roles.labelRequired') : ''"
+                @blur="touched.label = true"
+            />
+            <MalioInputTextArea
+                v-model="form.description"
+                :label="$t('admin.roles.description')"
+                input-class="w-full"
+            />
+
+            <div class="mt-2">
+                <label class="text-sm font-semibold text-neutral-700">
+                    {{ $t('admin.roles.permissions') }}
+                </label>
+                <p v-if="permissions.length === 0" class="mt-2 text-xs text-neutral-400">
+                    {{ $t('admin.roles.noPermissions') }}
+                </p>
+                <div
+                    v-for="group in groupedPermissions"
+                    :key="group.module"
+                    class="mt-3 rounded-lg border border-neutral-200 p-3"
+                >
+                    <p class="mb-2 text-xs font-bold uppercase tracking-wide text-neutral-500">
+                        {{ group.module }}
+                    </p>
+                    <div class="flex flex-col gap-2">
+                        <label
+                            v-for="perm in group.permissions"
+                            :key="perm.id"
+                            class="flex items-start gap-2 text-sm text-neutral-700"
+                        >
+                            <input
+                                v-model="form.permissions"
+                                type="checkbox"
+                                :value="perm['@id']"
+                                class="mt-0.5 rounded border-neutral-300"
+                            />
+                            <span>
+                                {{ perm.label }}
+                                <span class="block text-xs text-neutral-400">{{ perm.code }}</span>
+                            </span>
+                        </label>
+                    </div>
+                </div>
+            </div>
+
+            <div class="mt-4 flex justify-end">
+                <MalioButton
+                    :label="$t('common.save')"
+                    button-class="w-auto px-6"
+                    :disabled="isSubmitting"
+                    @click="handleSubmit"
+                />
+            </div>
+        </form>
+    </MalioDrawer>
+</template>
+
+<script setup lang="ts">
+import type { Role, RoleWrite } from '~/modules/core/services/roles'
+import { useRoleService } from '~/modules/core/services/roles'
+import type { Permission } from '~/modules/core/services/permissions'
+
+const props = defineProps<{
+    modelValue: boolean
+    item: Role | null
+    permissions: Permission[]
+}>()
+
+const emit = defineEmits<{
+    (e: 'update:modelValue', value: boolean): void
+    (e: 'saved'): void
+}>()
+
+const isOpen = computed({
+    get: () => props.modelValue,
+    set: (v) => emit('update:modelValue', v),
+})
+
+const isEditing = computed(() => !!props.item)
+const isSubmitting = ref(false)
+
+const form = reactive({
+    code: '',
+    label: '',
+    description: '',
+    permissions: [] as string[],
+})
+
+const touched = reactive({
+    code: false,
+    label: false,
+})
+
+const codeValid = computed(() => /^[a-z][a-z0-9_]*$/.test(form.code))
+
+const groupedPermissions = computed(() => {
+    const byModule = new Map<string, Permission[]>()
+    for (const perm of props.permissions) {
+        const list = byModule.get(perm.module) ?? []
+        list.push(perm)
+        byModule.set(perm.module, list)
+    }
+    return [...byModule.entries()]
+        .map(([module, permissions]) => ({ module, permissions }))
+        .sort((a, b) => a.module.localeCompare(b.module))
+})
+
+watch(() => props.modelValue, (open) => {
+    if (open) {
+        if (props.item) {
+            form.code = props.item.code
+            form.label = props.item.label
+            form.description = props.item.description ?? ''
+            form.permissions = props.item.permissions
+                .map((p) => p['@id'])
+                .filter((iri): iri is string => !!iri)
+        } else {
+            form.code = ''
+            form.label = ''
+            form.description = ''
+            form.permissions = []
+        }
+        touched.code = false
+        touched.label = false
+    }
+})
+
+const { create, update } = useRoleService()
+
+async function handleSubmit() {
+    touched.code = true
+    touched.label = true
+    if (!form.label.trim()) {
+        return
+    }
+    if (!isEditing.value && !codeValid.value) {
+        return
+    }
+
+    isSubmitting.value = true
+    try {
+        if (isEditing.value && props.item) {
+            const payload: Partial<RoleWrite> = {
+                label: form.label.trim(),
+                description: form.description.trim() || null,
+                permissions: form.permissions,
+            }
+            await update(props.item.id, payload)
+        } else {
+            const payload: RoleWrite = {
+                code: form.code.trim(),
+                label: form.label.trim(),
+                description: form.description.trim() || null,
+                permissions: form.permissions,
+            }
+            await create(payload)
+        }
+
+        emit('saved')
+        isOpen.value = false
+    } finally {
+        isSubmitting.value = false
+    }
+}
+</script>
diff --git a/frontend/i18n/locales/fr.json b/frontend/i18n/locales/fr.json
index 5711583..321bfed 100644
--- a/frontend/i18n/locales/fr.json
+++ b/frontend/i18n/locales/fr.json
@@ -195,6 +195,27 @@
         "addUser": "Ajouter un utilisateur",
         "editUser": "Modifier un utilisateur"
     },
+    "admin": {
+        "roles": {
+            "title": "Rôles",
+            "addRole": "Ajouter un rôle",
+            "editRole": "Modifier un rôle",
+            "empty": "Aucun rôle trouvé.",
+            "system": "Système",
+            "code": "Code",
+            "codeHint": "Identifiant technique en snake_case (immuable).",
+            "codeImmutable": "Le code ne peut pas être modifié après création.",
+            "codeInvalid": "Code invalide (attendu snake_case : minuscules, chiffres et underscores).",
+            "label": "Libellé",
+            "labelRequired": "Le libellé est requis.",
+            "description": "Description",
+            "permissions": "Permissions",
+            "noPermissions": "Aucune permission disponible.",
+            "created": "Rôle créé avec succès.",
+            "updated": "Rôle mis à jour avec succès.",
+            "deleted": "Rôle supprimé avec succès."
+        }
+    },
     "timeEntries": {
         "created": "Temps enregistré",
         "updated": "Temps modifié",
diff --git a/frontend/modules/core/composables/usePermissions.ts b/frontend/modules/core/composables/usePermissions.ts
new file mode 100644
index 0000000..0a9425a
--- /dev/null
+++ b/frontend/modules/core/composables/usePermissions.ts
@@ -0,0 +1,27 @@
+export function usePermissions() {
+    const auth = useAuthStore()
+
+    function isAdmin(): boolean {
+        return auth.user?.roles?.includes('ROLE_ADMIN') ?? false
+    }
+
+    function can(code: string): boolean {
+        if (!auth.user) {
+            return false
+        }
+        if (isAdmin()) {
+            return true
+        }
+        return auth.user.effectivePermissions?.includes(code) ?? false
+    }
+
+    function canAny(codes: string[]): boolean {
+        return codes.some((c) => can(c))
+    }
+
+    function canAll(codes: string[]): boolean {
+        return codes.every((c) => can(c))
+    }
+
+    return { can, canAny, canAll, isAdmin }
+}
diff --git a/frontend/modules/core/services/permissions.ts b/frontend/modules/core/services/permissions.ts
new file mode 100644
index 0000000..bcad3ea
--- /dev/null
+++ b/frontend/modules/core/services/permissions.ts
@@ -0,0 +1,22 @@
+import type { HydraCollection } from '~/utils/api'
+import { extractHydraMembers } from '~/utils/api'
+
+export type Permission = {
+    id: number
+    '@id'?: string
+    code: string
+    label: string
+    module: string
+    orphan?: boolean
+}
+
+export function usePermissionService() {
+    const api = useApi()
+
+    async function list(): Promise<Permission[]> {
+        const data = await api.get<HydraCollection<Permission>>('/permissions')
+        return extractHydraMembers(data)
+    }
+
+    return { list }
+}
diff --git a/frontend/modules/core/services/roles.ts b/frontend/modules/core/services/roles.ts
new file mode 100644
index 0000000..24bcdea
--- /dev/null
+++ b/frontend/modules/core/services/roles.ts
@@ -0,0 +1,50 @@
+import type { Permission } from './permissions'
+import type { HydraCollection } from '~/utils/api'
+import { extractHydraMembers } from '~/utils/api'
+
+export type Role = {
+    id: number
+    '@id'?: string
+    code: string
+    label: string
+    description?: string | null
+    isSystem: boolean
+    permissions: Permission[]
+}
+
+export type RoleWrite = {
+    code?: string
+    label: string
+    description?: string | null
+    /** IRIs of the granted permissions (e.g. /api/permissions/3). */
+    permissions: string[]
+}
+
+export function useRoleService() {
+    const api = useApi()
+
+    async function list(): Promise<Role[]> {
+        const data = await api.get<HydraCollection<Role>>('/roles')
+        return extractHydraMembers(data)
+    }
+
+    async function create(payload: RoleWrite): Promise<Role> {
+        return api.post<Role>('/roles', payload as Record<string, unknown>, {
+            toastSuccessKey: 'admin.roles.created',
+        })
+    }
+
+    async function update(id: number, payload: Partial<RoleWrite>): Promise<Role> {
+        return api.patch<Role>(`/roles/${id}`, payload as Record<string, unknown>, {
+            toastSuccessKey: 'admin.roles.updated',
+        })
+    }
+
+    async function remove(id: number): Promise<void> {
+        await api.delete(`/roles/${id}`, {}, {
+            toastSuccessKey: 'admin.roles.deleted',
+        })
+    }
+
+    return { list, create, update, remove }
+}
diff --git a/frontend/pages/admin.vue b/frontend/pages/admin.vue
index 998deac..f371f09 100644
--- a/frontend/pages/admin.vue
+++ b/frontend/pages/admin.vue
@@ -6,7 +6,7 @@
             <div class="mt-6 border-b border-neutral-200 overflow-x-auto">
                 <nav class="flex gap-4 sm:gap-6">
                     <button
-                        v-for="tab in tabs"
+                        v-for="tab in visibleTabs"
                         :key="tab.key"
                         class="whitespace-nowrap px-1 pb-3 text-sm font-semibold transition"
                         :class="activeTab === tab.key
@@ -27,6 +27,7 @@
             <AdminPriorityTab v-if="activeTab === 'priorities'" />
             <AdminTagTab v-if="activeTab === 'tags'" />
             <AdminUserTab v-if="activeTab === 'users'" />
+            <AdminRoleTab v-if="activeTab === 'roles' && canViewRoles" />
             <AdminGiteaTab v-if="activeTab === 'gitea'" />
             <AdminBookStackTab v-if="activeTab === 'bookstack'" />
             <AdminZimbraTab v-if="activeTab === 'zimbra'" />
@@ -41,6 +42,11 @@
 definePageMeta({ middleware: ['admin'] })
 useHead({ title: 'Administration' })
 
+const { can } = usePermissions()
+const { t } = useI18n()
+
+const canViewRoles = computed(() => can('core.roles.view'))
+
 const tabs = [
     { key: 'clients', label: 'Clients' },
     { key: 'workflows', label: 'Workflows' },
@@ -48,6 +54,7 @@ const tabs = [
     { key: 'priorities', label: 'Priorités' },
     { key: 'tags', label: 'Tags' },
     { key: 'users', label: 'Utilisateurs' },
+    { key: 'roles', label: t('admin.roles.title'), permission: 'core.roles.view' },
     { key: 'gitea', label: 'Gitea' },
     { key: 'bookstack', label: 'BookStack' },
     { key: 'zimbra', label: 'Zimbra' },
@@ -58,5 +65,9 @@ const tabs = [
 
 type TabKey = typeof tabs[number]['key']
 
+const visibleTabs = computed(() =>
+    tabs.filter((tab) => !('permission' in tab) || can(tab.permission)),
+)
+
 const activeTab = ref<TabKey>('clients')
 </script>
diff --git a/frontend/services/dto/user-data.ts b/frontend/services/dto/user-data.ts
index 3f5f5df..148bac0 100644
--- a/frontend/services/dto/user-data.ts
+++ b/frontend/services/dto/user-data.ts
@@ -7,6 +7,7 @@ export type UserData = {
     firstName?: string | null
     lastName?: string | null
     roles: string[]
+    effectivePermissions?: string[]
     avatarUrl?: string | null
     apiToken?: string | null
     // HR / absence management
diff --git a/src/Module/Core/Domain/Entity/Permission.php b/src/Module/Core/Domain/Entity/Permission.php
index 24e4047..bbd70a5 100644
--- a/src/Module/Core/Domain/Entity/Permission.php
+++ b/src/Module/Core/Domain/Entity/Permission.php
@@ -18,7 +18,7 @@ use Symfony\Component\Serializer\Attribute\Groups;
 #[ORM\Index(name: 'idx_permission_orphan', columns: ['orphan'])]
 #[ApiResource(
     operations: [
-        new GetCollection(),
+        new GetCollection(paginationEnabled: false),
         new Get(),
     ],
     normalizationContext: ['groups' => ['permission:read']],
diff --git a/src/Module/Core/Domain/Entity/Role.php b/src/Module/Core/Domain/Entity/Role.php
index 7954dad..e837008 100644
--- a/src/Module/Core/Domain/Entity/Role.php
+++ b/src/Module/Core/Domain/Entity/Role.php
@@ -25,7 +25,7 @@ use Symfony\Component\Serializer\Attribute\SerializedName;
 #[ORM\Index(name: 'idx_role_is_system', columns: ['is_system'])]
 #[ApiResource(
     operations: [
-        new GetCollection(security: "is_granted('core.roles.view')"),
+        new GetCollection(security: "is_granted('core.roles.view')", paginationEnabled: false),
         new Get(security: "is_granted('core.roles.view')"),
         new Post(security: "is_granted('core.roles.manage')", processor: RoleProcessor::class),
         new Patch(security: "is_granted('core.roles.manage')", processor: RoleProcessor::class),