diff --git a/frontend/src/components/admin/TemplateEditor.tsx b/frontend/src/components/admin/TemplateEditor.tsx
index 2410dbd..50c6549 100644
--- a/frontend/src/components/admin/TemplateEditor.tsx
+++ b/frontend/src/components/admin/TemplateEditor.tsx
@@ -39,15 +39,15 @@ interface Template {
 // ---------------------------------------------------------------------------
 
 const ALL_FIELD_DEFS: { key: string; defaultLabel: string }[] = [
-  { key: 'ebene1',                defaultLabel: 'Ebene 1' },
-  { key: 'ebene2',                defaultLabel: 'Ebene 2' },
-  { key: 'baureihe',              defaultLabel: 'Baureihe' },
+  { key: 'ebene1',                defaultLabel: 'Level 1' },
+  { key: 'ebene2',                defaultLabel: 'Level 2' },
+  { key: 'baureihe',              defaultLabel: 'Series' },
   { key: 'pim_id',                defaultLabel: 'PIM-ID' },
-  { key: 'produkt_baureihe',      defaultLabel: 'Produkt / Baureihe' },
-  { key: 'gewaehltes_produkt',    defaultLabel: 'Gewähltes Produkt' },
-  { key: 'name_cad_modell',       defaultLabel: 'Name CAD-Modell' },
-  { key: 'gewuenschte_bildnummer',defaultLabel: 'Gewünschte Bildnummer' },
-  { key: 'lagertyp',              defaultLabel: 'Lagertyp' },
+  { key: 'produkt_baureihe',      defaultLabel: 'Product / Series' },
+  { key: 'gewaehltes_produkt',    defaultLabel: 'Selected Product' },
+  { key: 'name_cad_modell',       defaultLabel: 'CAD Model Name' },
+  { key: 'gewuenschte_bildnummer',defaultLabel: 'Desired Image No.' },
+  { key: 'lagertyp',              defaultLabel: 'Bearing Type' },
   { key: 'medias_rendering',      defaultLabel: 'Medias Rendering' },
 ]
 
diff --git a/frontend/src/components/upload/ExcelSpreadsheet.tsx b/frontend/src/components/upload/ExcelSpreadsheet.tsx
index 92966e8..dbaa183 100644
--- a/frontend/src/components/upload/ExcelSpreadsheet.tsx
+++ b/frontend/src/components/upload/ExcelSpreadsheet.tsx
@@ -8,15 +8,15 @@ interface Props {
 }
 
 const STANDARD_FIELDS: { key: keyof ParsedRow; label: string; width: number; mono?: boolean }[] = [
-  { key: 'ebene1',              label: 'Ebene 1',            width: 140 },
-  { key: 'ebene2',              label: 'Ebene 2',            width: 120 },
-  { key: 'baureihe',            label: 'Baureihe',           width: 160 },
+  { key: 'ebene1',              label: 'Level 1',            width: 140 },
+  { key: 'ebene2',              label: 'Level 2',            width: 120 },
+  { key: 'baureihe',            label: 'Series',             width: 160 },
   { key: 'pim_id',              label: 'PIM-ID',             width: 110 },
-  { key: 'produkt_baureihe',    label: 'Produkt-Baureihe',   width: 150 },
-  { key: 'gewaehltes_produkt',  label: 'Gewähltes Produkt',  width: 150 },
+  { key: 'produkt_baureihe',    label: 'Product Series',     width: 150 },
+  { key: 'gewaehltes_produkt',  label: 'Selected Product',   width: 150 },
   { key: 'name_cad_modell',     label: 'CAD-Modell',         width: 190, mono: true },
-  { key: 'gewuenschte_bildnummer', label: 'Bildnummer',      width: 170, mono: true },
-  { key: 'lagertyp',            label: 'Lagertyp',           width: 100 },
+  { key: 'gewuenschte_bildnummer', label: 'Image No.',       width: 170, mono: true },
+  { key: 'lagertyp',            label: 'Bearing Type',       width: 100 },
 ]
 
 export default function ExcelSpreadsheet({ parsed, rows, onChange }: Props) {
diff --git a/frontend/src/pages/Admin.tsx b/frontend/src/pages/Admin.tsx
index 0d28f26..7330375 100644
--- a/frontend/src/pages/Admin.tsx
+++ b/frontend/src/pages/Admin.tsx
@@ -950,18 +950,18 @@ export default function AdminPage() {
             <div>
               <h2 className="font-semibold text-content">Dashboard Widget-Konfiguration</h2>
               <p className="text-xs text-content-muted mt-0.5">
-                Legt das Standard-Widget-Layout für alle Nutzer dieses Tenants fest. Nutzer können ihr eigenes Layout individuell anpassen.
+                Sets the default widget layout for all users of this tenant. Users can customize their own layout individually.
               </p>
             </div>
           </div>
           <div className="p-4 flex items-center gap-4">
             <div className="flex-1">
               <p className="text-sm text-content-secondary">
-                Tenant-Standard:{' '}
+                Tenant default:{' '}
                 <span className="font-medium text-content">
                   {tenantDefaultWidgets && tenantDefaultWidgets.length > 0
-                    ? `${tenantDefaultWidgets.length} Widget${tenantDefaultWidgets.length !== 1 ? 's' : ''} konfiguriert`
-                    : 'Noch kein Standard festgelegt (Systemvorgabe aktiv)'}
+                    ? `${tenantDefaultWidgets.length} Widget${tenantDefaultWidgets.length !== 1 ? 's' : ''} configured`
+                    : 'No default set yet (system default active)'}
                 </span>
               </p>
             </div>
@@ -970,7 +970,7 @@ export default function AdminPage() {
               className="btn-secondary text-sm flex items-center gap-2"
             >
               <LayoutDashboard size={14} />
-              Tenant-Standard-Dashboard bearbeiten
+              Edit Tenant Default Dashboard
             </button>
           </div>
         </div>
diff --git a/frontend/src/pages/OrderDetail.tsx b/frontend/src/pages/OrderDetail.tsx
index e298c26..48e5a96 100644
--- a/frontend/src/pages/OrderDetail.tsx
+++ b/frontend/src/pages/OrderDetail.tsx
@@ -584,7 +584,7 @@ export default function OrderDetailPage() {
                 <Search size={14} className="absolute left-2.5 top-1/2 -translate-y-1/2 text-content-muted pointer-events-none" />
                 <input
                   type="text"
-                  placeholder="Search name, Baureihe, Ebene…"
+                  placeholder="Search name, series, level…"
                   value={filters.search}
                   onChange={(e) => updateFilter('search', e.target.value)}
                   className="w-full pl-8 pr-3 py-1.5 text-sm border border-border-default rounded-md focus:outline-none focus:ring-2 focus:ring-accent"
@@ -955,10 +955,10 @@ function OrderItemsTable({
               Img
             </th>
             <SortableTh label="CAD Model" sortKey="name_cad_modell" current={sortKey} dir={sortDir} onSort={onSort} className="min-w-[160px]" />
-            <SortableTh label="Baureihe" sortKey="baureihe" current={sortKey} dir={sortDir} onSort={onSort} className="min-w-[110px]" />
-            <th className="py-2.5 px-3 text-left text-xs font-semibold text-content-secondary uppercase tracking-wide">Ebene 1</th>
-            <th className="py-2.5 px-3 text-left text-xs font-semibold text-content-secondary uppercase tracking-wide">Ebene 2</th>
-            <th className="py-2.5 px-3 text-left text-xs font-semibold text-content-secondary uppercase tracking-wide">Lagertyp</th>
+            <SortableTh label="Series" sortKey="baureihe" current={sortKey} dir={sortDir} onSort={onSort} className="min-w-[110px]" />
+            <th className="py-2.5 px-3 text-left text-xs font-semibold text-content-secondary uppercase tracking-wide">Level 1</th>
+            <th className="py-2.5 px-3 text-left text-xs font-semibold text-content-secondary uppercase tracking-wide">Level 2</th>
+            <th className="py-2.5 px-3 text-left text-xs font-semibold text-content-secondary uppercase tracking-wide">Bearing Type</th>
             <th className="py-2.5 px-3 text-center text-xs font-semibold text-content-secondary uppercase tracking-wide">Rendering</th>
             <th className="py-2.5 px-3 text-center text-xs font-semibold text-content-secondary uppercase tracking-wide">Parts</th>
             <th className="py-2.5 px-3 text-center text-xs font-semibold text-content-secondary uppercase tracking-wide">STEP</th>
@@ -1076,22 +1076,22 @@ function ItemTableRow({
           <p className="truncate" title={item.name_cad_modell ?? undefined}>{item.name_cad_modell || '—'}</p>
         </td>
 
-        {/* Baureihe */}
+        {/* Series */}
         <td className="py-2.5 px-3 text-content-secondary text-xs max-w-[130px]">
           <p className="truncate">{item.baureihe || '—'}</p>
         </td>
 
-        {/* Ebene 1 */}
+        {/* Level 1 */}
         <td className="py-2.5 px-3 text-content-secondary text-xs max-w-[120px]">
           <p className="truncate">{item.ebene1 || '—'}</p>
         </td>
 
-        {/* Ebene 2 */}
+        {/* Level 2 */}
         <td className="py-2.5 px-3 text-content-secondary text-xs max-w-[120px]">
           <p className="truncate">{item.ebene2 || '—'}</p>
         </td>
 
-        {/* Lagertyp */}
+        {/* Bearing Type */}
         <td className="py-2.5 px-3 text-content-secondary text-xs max-w-[110px]">
           <p className="truncate">{item.lagertyp || '—'}</p>
         </td>
@@ -1175,12 +1175,12 @@ function ItemTableRow({
                 </div>
 
                 <div className="flex-1 grid grid-cols-2 md:grid-cols-3 gap-4 text-sm">
-                  <Field label="Ebene 1" value={item.ebene1} />
+                  <Field label="Level 1" value={item.ebene1} />
                   <Field label="PIM-ID" value={item.pim_id} />
-                  <Field label="Produkt / Baureihe" value={item.produkt_baureihe} />
-                  <Field label="Gewähltes Produkt" value={item.gewaehltes_produkt} />
-                  <Field label="Bildnummer" value={item.gewuenschte_bildnummer} />
-                  <Field label="Lagertyp" value={item.lagertyp} />
+                  <Field label="Product / Series" value={item.produkt_baureihe} />
+                  <Field label="Selected Product" value={item.gewaehltes_produkt} />
+                  <Field label="Image No." value={item.gewuenschte_bildnummer} />
+                  <Field label="Bearing Type" value={item.lagertyp} />
                   <Field label="Medias Rendering" value={item.medias_rendering?.toString() ?? '—'} />
                 </div>
               </div>
@@ -1350,15 +1350,15 @@ function GalleryCard({ item, isDraft, onClick }: { item: any; isDraft: boolean;
 // ── Source Spreadsheet ────────────────────────────────────────────────────────
 
 const STD_COLS: { key: keyof OrderItem; label: string; editable?: boolean }[] = [
-  { key: 'ebene1',                 label: 'Ebene 1',         editable: true },
-  { key: 'ebene2',                 label: 'Ebene 2',         editable: true },
-  { key: 'baureihe',               label: 'Baureihe',        editable: true },
+  { key: 'ebene1',                 label: 'Level 1',         editable: true },
+  { key: 'ebene2',                 label: 'Level 2',         editable: true },
+  { key: 'baureihe',               label: 'Series',          editable: true },
   { key: 'pim_id',                 label: 'PIM-ID',          editable: true },
-  { key: 'produkt_baureihe',       label: 'Produkt/Baureihe',editable: true },
-  { key: 'gewaehltes_produkt',     label: 'Gew. Produkt',    editable: true },
+  { key: 'produkt_baureihe',       label: 'Product/Series',  editable: true },
+  { key: 'gewaehltes_produkt',     label: 'Sel. Product',    editable: true },
   { key: 'name_cad_modell',        label: 'CAD-Modell',      editable: true },
-  { key: 'gewuenschte_bildnummer', label: 'Bildnummer',      editable: true },
-  { key: 'lagertyp',               label: 'Lagertyp',        editable: true },
+  { key: 'gewuenschte_bildnummer', label: 'Image No.',       editable: true },
+  { key: 'lagertyp',               label: 'Bearing Type',    editable: true },
 ]
 
 function SourceSpreadsheet({
@@ -1606,9 +1606,9 @@ function GalleryModal({
 
         {/* Fields */}
         <div className="px-5 py-3 grid grid-cols-2 gap-x-6 gap-y-1 text-sm border-t border-border-light">
-          <Field label="Baureihe" value={item.baureihe} />
-          <Field label="Ebene 2" value={item.ebene2} />
-          <Field label="Lagertyp" value={item.lagertyp} />
+          <Field label="Series" value={item.baureihe} />
+          <Field label="Level 2" value={item.ebene2} />
+          <Field label="Bearing Type" value={item.lagertyp} />
           <Field label="Rendering" value={item.medias_rendering?.toString() ?? '—'} />
           <Field label="Components" value={String(item.components?.length ?? 0)} />
           <Field label="PIM-ID" value={item.pim_id} />
diff --git a/frontend/src/pages/Tenants.tsx b/frontend/src/pages/Tenants.tsx
index 4eb4b2d..a61f9fc 100644
--- a/frontend/src/pages/Tenants.tsx
+++ b/frontend/src/pages/Tenants.tsx
@@ -66,34 +66,34 @@ export default function TenantsPage() {
   const createMut = useMutation({
     mutationFn: (data: TenantCreate) => createTenant(data),
     onSuccess: () => {
-      toast.success('Tenant erstellt')
+      toast.success('Tenant created')
       qc.invalidateQueries({ queryKey: ['tenants'] })
       setShowCreate(false)
       setCreateForm({ name: '', slug: '', is_active: true })
       setSlugEdited(false)
     },
-    onError: (e: any) => toast.error(e.response?.data?.detail || 'Fehler beim Erstellen'),
+    onError: (e: any) => toast.error(e.response?.data?.detail || 'Failed to create'),
   })
 
   const updateMut = useMutation({
     mutationFn: ({ id, data }: { id: string; data: TenantUpdate }) => updateTenant(id, data),
     onSuccess: () => {
-      toast.success('Tenant aktualisiert')
+      toast.success('Tenant updated')
       qc.invalidateQueries({ queryKey: ['tenants'] })
       setEditingTenant(null)
     },
-    onError: (e: any) => toast.error(e.response?.data?.detail || 'Fehler beim Aktualisieren'),
+    onError: (e: any) => toast.error(e.response?.data?.detail || 'Failed to update'),
   })
 
   const deleteMut = useMutation({
     mutationFn: (id: string) => deleteTenant(id),
     onSuccess: (_data, id) => {
-      toast.success('Tenant gelöscht')
+      toast.success('Tenant deleted')
       qc.invalidateQueries({ queryKey: ['tenants'] })
       if (activeTenantId === id) setActiveTenantId(null)
       setDeletingId(null)
     },
-    onError: (e: any) => toast.error(e.response?.data?.detail || 'Fehler beim Löschen'),
+    onError: (e: any) => toast.error(e.response?.data?.detail || 'Failed to delete'),
   })
 
   // Auto-generate slug from name unless manually edited
@@ -123,7 +123,7 @@ export default function TenantsPage() {
           <Building2 size={24} className="text-accent" />
           <div>
             <h1 className="text-xl font-bold text-content">Tenants</h1>
-            <p className="text-sm text-content-muted">Mandanten verwalten und Kontext wählen</p>
+            <p className="text-sm text-content-muted">Manage tenants and select context</p>
           </div>
         </div>
         <button
@@ -131,14 +131,14 @@ export default function TenantsPage() {
           className="flex items-center gap-2 px-4 py-2 bg-accent text-accent-text rounded-md text-sm font-medium hover:bg-accent-hover transition-colors"
         >
           <Plus size={16} />
-          Neuer Tenant
+          New Tenant
         </button>
       </div>
 
       {/* Tenant Selector */}
       <div className="mb-6 p-4 bg-surface border border-border-default rounded-lg">
         <p className="text-xs font-semibold text-content-muted uppercase tracking-wider mb-2">
-          Admin Cross-Tenant-Ansicht
+          Admin Cross-Tenant View
         </p>
         <div className="relative inline-block">
           <button
@@ -147,7 +147,7 @@ export default function TenantsPage() {
           >
             <Building2 size={14} className="text-content-muted shrink-0" />
             <span className="flex-1 text-left truncate">
-              {activeTenant ? activeTenant.name : 'Alle Tenants / Admin-Ansicht'}
+              {activeTenant ? activeTenant.name : 'All Tenants / Admin View'}
             </span>
             <ChevronDown size={14} className="text-content-muted shrink-0" />
           </button>
@@ -159,7 +159,7 @@ export default function TenantsPage() {
               >
                 {activeTenantId === null && <Check size={14} className="text-accent shrink-0" />}
                 {activeTenantId !== null && <span className="w-[14px] shrink-0" />}
-                <span>Alle Tenants / Admin-Ansicht</span>
+                <span>All Tenants / Admin View</span>
               </button>
               {tenants.map((t) => (
                 <button
@@ -171,7 +171,7 @@ export default function TenantsPage() {
                   {activeTenantId !== t.id && <span className="w-[14px] shrink-0" />}
                   <span className="flex-1 truncate">{t.name}</span>
                   {!t.is_active && (
-                    <span className="text-xs px-1.5 py-0.5 rounded bg-surface-muted text-content-muted">inaktiv</span>
+                    <span className="text-xs px-1.5 py-0.5 rounded bg-surface-muted text-content-muted">inactive</span>
                   )}
                 </button>
               ))}
@@ -180,7 +180,7 @@ export default function TenantsPage() {
         </div>
         {activeTenant && (
           <p className="mt-2 text-xs text-content-muted">
-            API-Requests werden mit Header <code className="font-mono bg-surface-alt px-1 rounded">X-Tenant-ID: {activeTenant.id}</code> gesendet.
+            API requests are sent with header <code className="font-mono bg-surface-alt px-1 rounded">X-Tenant-ID: {activeTenant.id}</code>.
           </p>
         )}
       </div>
@@ -194,22 +194,22 @@ export default function TenantsPage() {
               <th className="px-4 py-3 text-left font-semibold text-content-secondary">Slug</th>
               <th className="px-4 py-3 text-left font-semibold text-content-secondary">Status</th>
               <th className="px-4 py-3 text-left font-semibold text-content-secondary">
-                <span className="flex items-center gap-1"><Users size={13} /> Nutzer</span>
+                <span className="flex items-center gap-1"><Users size={13} /> Users</span>
               </th>
-              <th className="px-4 py-3 text-left font-semibold text-content-secondary">Erstellt</th>
+              <th className="px-4 py-3 text-left font-semibold text-content-secondary">Created</th>
               <th className="px-4 py-3" />
             </tr>
           </thead>
           <tbody>
             {isLoading && (
               <tr>
-                <td colSpan={6} className="px-4 py-8 text-center text-content-muted">Lade Tenants…</td>
+                <td colSpan={6} className="px-4 py-8 text-center text-content-muted">Loading tenants…</td>
               </tr>
             )}
             {!isLoading && tenants.length === 0 && (
               <tr>
                 <td colSpan={6} className="px-4 py-8 text-center text-content-muted">
-                  Noch keine Tenants vorhanden.
+                  No tenants yet.
                 </td>
               </tr>
             )}
@@ -218,7 +218,7 @@ export default function TenantsPage() {
                 <td className="px-4 py-3 font-medium text-content">
                   <div className="flex items-center gap-2">
                     {activeTenantId === tenant.id && (
-                      <span className="w-1.5 h-1.5 rounded-full bg-accent shrink-0" title="Aktiver Kontext" />
+                      <span className="w-1.5 h-1.5 rounded-full bg-accent shrink-0" title="Active context" />
                     )}
                     {tenant.name}
                   </div>
@@ -227,11 +227,11 @@ export default function TenantsPage() {
                 <td className="px-4 py-3">
                   {tenant.is_active ? (
                     <span className="inline-flex items-center gap-1 px-2 py-0.5 rounded-full text-xs font-medium bg-status-success-bg text-status-success-text">
-                      aktiv
+                      active
                     </span>
                   ) : (
                     <span className="inline-flex items-center gap-1 px-2 py-0.5 rounded-full text-xs font-medium bg-surface-muted text-content-muted">
-                      inaktiv
+                      inactive
                     </span>
                   )}
                 </td>
@@ -244,14 +244,14 @@ export default function TenantsPage() {
                     <button
                       onClick={() => openEdit(tenant)}
                       className="p-1.5 rounded hover:bg-surface-alt text-content-muted hover:text-content transition-colors"
-                      title="Bearbeiten"
+                      title="Edit"
                     >
                       <Pencil size={15} />
                     </button>
                     <button
                       onClick={() => setDeletingId(tenant.id)}
                       className="p-1.5 rounded hover:bg-status-error-bg text-content-muted hover:text-status-error-text transition-colors"
-                      title="Löschen"
+                      title="Delete"
                     >
                       <Trash2 size={15} />
                     </button>
@@ -268,7 +268,7 @@ export default function TenantsPage() {
         <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/40">
           <div className="bg-surface rounded-xl shadow-xl w-full max-w-md mx-4 p-6">
             <div className="flex items-center justify-between mb-5">
-              <h2 className="text-lg font-semibold text-content">Neuer Tenant</h2>
+              <h2 className="text-lg font-semibold text-content">New Tenant</h2>
               <button
                 onClick={() => setShowCreate(false)}
                 className="p-1.5 rounded hover:bg-surface-alt text-content-muted transition-colors"
@@ -284,7 +284,7 @@ export default function TenantsPage() {
                   type="text"
                   value={createForm.name}
                   onChange={(e) => handleCreateNameChange(e.target.value)}
-                  placeholder="z.B. Schaeffler GmbH"
+                  placeholder="e.g. Schaeffler GmbH"
                   className="w-full px-3 py-2 rounded-md border border-border-default bg-surface text-content text-sm focus:outline-none focus:ring-2 focus:ring-accent/50"
                 />
               </div>
@@ -292,13 +292,13 @@ export default function TenantsPage() {
               <div>
                 <label className="block text-sm font-medium text-content-secondary mb-1">
                   Slug *
-                  <span className="text-xs font-normal text-content-muted ml-1">(URL-Kennung, automatisch generiert)</span>
+                  <span className="text-xs font-normal text-content-muted ml-1">(URL identifier, auto-generated)</span>
                 </label>
                 <input
                   type="text"
                   value={createForm.slug}
                   onChange={(e) => handleCreateSlugChange(e.target.value)}
-                  placeholder="z.B. schaeffler-gmbh"
+                  placeholder="e.g. schaeffler-gmbh"
                   className="w-full px-3 py-2 rounded-md border border-border-default bg-surface text-content text-sm font-mono focus:outline-none focus:ring-2 focus:ring-accent/50"
                 />
               </div>
@@ -313,7 +313,7 @@ export default function TenantsPage() {
                   />
                   <div className="w-9 h-5 bg-surface-muted rounded-full peer peer-checked:bg-accent transition-colors after:content-[''] after:absolute after:top-0.5 after:left-0.5 after:bg-white after:rounded-full after:h-4 after:w-4 after:transition-all peer-checked:after:translate-x-4" />
                 </label>
-                <span className="text-sm text-content-secondary">Aktiv</span>
+                <span className="text-sm text-content-secondary">Active</span>
               </div>
             </div>
 
@@ -322,14 +322,14 @@ export default function TenantsPage() {
                 onClick={() => setShowCreate(false)}
                 className="px-4 py-2 text-sm rounded-md border border-border-default text-content-secondary hover:bg-surface-alt transition-colors"
               >
-                Abbrechen
+                Cancel
               </button>
               <button
                 onClick={() => createMut.mutate(createForm)}
                 disabled={!createForm.name.trim() || !createForm.slug.trim() || createMut.isPending}
                 className="px-4 py-2 text-sm rounded-md bg-accent text-accent-text font-medium hover:bg-accent-hover disabled:opacity-50 disabled:cursor-not-allowed transition-colors"
               >
-                {createMut.isPending ? 'Erstelle…' : 'Erstellen'}
+                {createMut.isPending ? 'Creating…' : 'Create'}
               </button>
             </div>
           </div>
@@ -341,7 +341,7 @@ export default function TenantsPage() {
         <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/40">
           <div className="bg-surface rounded-xl shadow-xl w-full max-w-md mx-4 p-6">
             <div className="flex items-center justify-between mb-5">
-              <h2 className="text-lg font-semibold text-content">Tenant bearbeiten</h2>
+              <h2 className="text-lg font-semibold text-content">Edit Tenant</h2>
               <button
                 onClick={() => setEditingTenant(null)}
                 className="p-1.5 rounded hover:bg-surface-alt text-content-muted transition-colors"
@@ -381,7 +381,7 @@ export default function TenantsPage() {
                   />
                   <div className="w-9 h-5 bg-surface-muted rounded-full peer peer-checked:bg-accent transition-colors after:content-[''] after:absolute after:top-0.5 after:left-0.5 after:bg-white after:rounded-full after:h-4 after:w-4 after:transition-all peer-checked:after:translate-x-4" />
                 </label>
-                <span className="text-sm text-content-secondary">Aktiv</span>
+                <span className="text-sm text-content-secondary">Active</span>
               </div>
             </div>
 
@@ -390,14 +390,14 @@ export default function TenantsPage() {
                 onClick={() => setEditingTenant(null)}
                 className="px-4 py-2 text-sm rounded-md border border-border-default text-content-secondary hover:bg-surface-alt transition-colors"
               >
-                Abbrechen
+                Cancel
               </button>
               <button
                 onClick={() => updateMut.mutate({ id: editingTenant.id, data: editForm })}
                 disabled={updateMut.isPending}
                 className="px-4 py-2 text-sm rounded-md bg-accent text-accent-text font-medium hover:bg-accent-hover disabled:opacity-50 disabled:cursor-not-allowed transition-colors"
               >
-                {updateMut.isPending ? 'Speichere…' : 'Speichern'}
+                {updateMut.isPending ? 'Saving…' : 'Save'}
               </button>
             </div>
           </div>
@@ -413,9 +413,9 @@ export default function TenantsPage() {
                 <Trash2 size={16} className="text-status-error-text" />
               </div>
               <div>
-                <h2 className="text-base font-semibold text-content">Tenant löschen?</h2>
+                <h2 className="text-base font-semibold text-content">Delete tenant?</h2>
                 <p className="text-sm text-content-muted mt-1">
-                  Diese Aktion kann nicht rückgängig gemacht werden.
+                  This action cannot be undone.
                 </p>
               </div>
             </div>
@@ -424,14 +424,14 @@ export default function TenantsPage() {
                 onClick={() => setDeletingId(null)}
                 className="px-4 py-2 text-sm rounded-md border border-border-default text-content-secondary hover:bg-surface-alt transition-colors"
               >
-                Abbrechen
+                Cancel
               </button>
               <button
                 onClick={() => deleteMut.mutate(deletingId)}
                 disabled={deleteMut.isPending}
                 className="px-4 py-2 text-sm rounded-md bg-status-error-bg text-status-error-text font-medium hover:opacity-80 disabled:opacity-50 disabled:cursor-not-allowed transition-opacity"
               >
-                {deleteMut.isPending ? 'Lösche…' : 'Löschen'}
+                {deleteMut.isPending ? 'Deleting…' : 'Delete'}
               </button>
             </div>
           </div>
diff --git a/frontend/src/pages/Upload.tsx b/frontend/src/pages/Upload.tsx
index ca3de23..7374e13 100644
--- a/frontend/src/pages/Upload.tsx
+++ b/frontend/src/pages/Upload.tsx
@@ -299,7 +299,7 @@ export default function UploadPage() {
 
             <p className="text-xs text-content-secondary mb-3 leading-relaxed">
               No products have been created yet. This is a <strong>preview</strong> of what will happen when you finalize the order.
-              Each unique <strong>Produkt (Baureihe)</strong> in the Excel becomes one product in the library.
+              Each unique <strong>Product (Series)</strong> in the Excel becomes one product in the library.
             </p>
 
             <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 gap-3">
@@ -321,14 +321,14 @@ export default function UploadPage() {
                 icon={<Ban size={18} className="text-amber-600" />}
                 value={previewResult.no_pim_id_count}
                 label="rows skipped"
-                description="No PIM-ID or Baureihe found. Cannot be matched to a product."
+                description="No PIM-ID or Product Series found. Cannot be matched to a product."
                 color="bg-status-warning-bg border-border-default text-status-warning-text"
               />
               <StatCard
                 icon={<Copy size={18} className="text-orange-600" />}
                 value={previewResult.duplicate_count}
-                label="duplicate Baureihe"
-                description="Same Produkt-Baureihe appears multiple times. Pre-unchecked — only first occurrence imported."
+                label="duplicate Series"
+                description="Same Product Series appears multiple times. Pre-unchecked — only first occurrence imported."
                 color="bg-status-warning-bg border-border-default text-status-warning-text"
               />
             </div>
@@ -341,10 +341,10 @@ export default function UploadPage() {
                 <span className="text-status-warning-text font-bold text-sm shrink-0">⚠</span>
                 <div>
                   <p className="text-sm font-semibold text-status-warning-text">
-                    {previewResult.duplicate_count} duplicate Produkt-Baureihe row{previewResult.duplicate_count !== 1 ? 's' : ''} detected
+                    {previewResult.duplicate_count} duplicate Product Series row{previewResult.duplicate_count !== 1 ? 's' : ''} detected
                   </p>
                   <p className="text-xs text-status-warning-text mt-0.5">
-                    Each product is unique — only the <strong>first occurrence</strong> of a Baureihe will be imported.
+                    Each product is unique — only the <strong>first occurrence</strong> of a Product Series will be imported.
                     Duplicate rows are pre-unchecked (shown in amber). You can manually re-check them to overwrite the first.
                   </p>
                 </div>
@@ -378,7 +378,7 @@ export default function UploadPage() {
                     />
                   </th>
                   <th className="px-4 py-2 font-medium text-content-secondary">PIM-ID</th>
-                  <th className="px-4 py-2 font-medium text-content-secondary">Baureihe</th>
+                  <th className="px-4 py-2 font-medium text-content-secondary">Series</th>
                   <th className="px-4 py-2 font-medium text-content-secondary"
                     title="Gew\u00e4hltes Produkt \u2014 the specific material/coating variant from the Excel"
                   >Gew. Produkt</th>
@@ -424,14 +424,14 @@ export default function UploadPage() {
                         {!hasId ? (
                           <span
                             className="text-xs px-2 py-0.5 rounded-full bg-surface-muted text-content-muted"
-                            title="No PIM-ID or Baureihe — this row will be skipped"
+                            title="No PIM-ID or Product Series — this row will be skipped"
                           >
                             skipped
                           </span>
                         ) : row.is_duplicate ? (
                           <span
                             className="text-xs px-2 py-0.5 rounded-full bg-status-warning-bg text-status-warning-text font-medium"
-                            title={`Duplicate Produkt-Baureihe — first occurrence is row ${row.duplicate_of_row}. Uncheck to exclude.`}
+                            title={`Duplicate Product Series — first occurrence is row ${row.duplicate_of_row}. Uncheck to exclude.`}
                           >
                             Duplicate of row {row.duplicate_of_row}
                           </span>
diff --git a/frontend/src/pages/WorkflowEditor.tsx b/frontend/src/pages/WorkflowEditor.tsx
index 9a2269e..2ada68f 100644
--- a/frontend/src/pages/WorkflowEditor.tsx
+++ b/frontend/src/pages/WorkflowEditor.tsx
@@ -81,7 +81,7 @@ function InputNode({ selected }: { selected?: boolean }) {
       label="STEP Input"
       icon={<FileUp size={14} />}
       color="green"
-      description="STEP-Datei Eingang"
+      description="STEP file input"
       selected={selected}
       hasTarget={false}
     />
@@ -91,7 +91,7 @@ function InputNode({ selected }: { selected?: boolean }) {
 function ConvertNode({ selected }: { selected?: boolean }) {
   return (
     <BaseNode
-      label="STL Konvertierung"
+      label="STL Conversion"
       icon={<RefreshCw size={14} />}
       color="blue"
       description="STEP → STL (cadquery)"
@@ -144,7 +144,7 @@ function OutputNode({ data, selected }: { data: { label?: string }; selected?: b
       label={data.label ?? 'Output'}
       icon={<Download size={14} />}
       color="gray"
-      description="Ergebnis-Datei"
+      description="Output file"
       selected={selected}
       hasSource={false}
     />
@@ -168,7 +168,7 @@ function workflowToGraph(config: WorkflowConfig): { nodes: Node[]; edges: Edge[]
   if (config.type === 'still') {
     const nodes: Node[] = [
       { id: 'input', type: 'inputNode', position: { x: 0, y: Y }, data: { label: 'STEP Input' } },
-      { id: 'convert', type: 'convertNode', position: { x: 220, y: Y }, data: { label: 'STL Konvertierung' } },
+      { id: 'convert', type: 'convertNode', position: { x: 220, y: Y }, data: { label: 'STL Conversion' } },
       { id: 'render', type: 'renderNode', position: { x: 440, y: Y }, data: { label: 'Still Render', params: config.params } },
       { id: 'output', type: 'outputNode', position: { x: 660, y: Y }, data: { label: 'PNG Output' } },
     ]
@@ -238,7 +238,7 @@ function ConfigSidepanel({
 }) {
   return (
     <div className="w-72 border-l border-border-default bg-surface p-4 space-y-5 overflow-y-auto">
-      <h3 className="font-semibold text-content">Node-Konfiguration</h3>
+      <h3 className="font-semibold text-content">Node Configuration</h3>
 
       {/* Render Engine */}
       <div>
@@ -282,7 +282,7 @@ function ConfigSidepanel({
 
       {/* Resolution */}
       <div>
-        <label className="text-sm text-content-secondary mb-2 block">Auflösung</label>
+        <label className="text-sm text-content-secondary mb-2 block">Resolution</label>
         <div className="flex gap-2">
           {([[1024, 1024], [2048, 2048], [4096, 4096]] as [number, number][]).map(([w]) => (
             <button
@@ -325,7 +325,7 @@ function ConfigSidepanel({
       {/* Duration */}
       <div>
         <label className="text-sm text-content-secondary mb-2 block">
-          Dauer (s): <span className="font-semibold text-content">{params.duration_s ?? 5}</span>
+          Duration (s): <span className="font-semibold text-content">{params.duration_s ?? 5}</span>
         </label>
         <input
           type="range"
@@ -367,7 +367,7 @@ function NewWorkflowModal({ onClose, onCreate, isLoading }: NewWorkflowModalProp
     <div className="fixed inset-0 bg-black/40 flex items-center justify-center z-50">
       <div className="bg-surface rounded-xl shadow-xl w-full max-w-md p-6">
         <div className="flex items-center justify-between mb-4">
-          <h2 className="text-lg font-semibold text-content">Neuer Workflow</h2>
+          <h2 className="text-lg font-semibold text-content">New Workflow</h2>
           <button onClick={onClose} className="text-content-muted hover:text-content">
             <X size={20} />
           </button>
@@ -378,7 +378,7 @@ function NewWorkflowModal({ onClose, onCreate, isLoading }: NewWorkflowModalProp
             <label className="block text-sm text-content-secondary mb-1">Name</label>
             <input
               className="w-full border border-border-default rounded-lg px-3 py-2 text-sm bg-surface text-content focus:outline-none focus:ring-2 focus:ring-accent"
-              placeholder="z.B. Still Render Standard"
+              placeholder="e.g. Still Render Standard"
               value={name}
               onChange={e => setName(e.target.value)}
               autoFocus
@@ -386,7 +386,7 @@ function NewWorkflowModal({ onClose, onCreate, isLoading }: NewWorkflowModalProp
           </div>
 
           <div>
-            <label className="block text-sm text-content-secondary mb-1">Typ</label>
+            <label className="block text-sm text-content-secondary mb-1">Type</label>
             <div className="grid grid-cols-2 gap-2">
               {([
                 { value: 'still', label: 'Still', desc: 'Single PNG image' },
@@ -417,14 +417,14 @@ function NewWorkflowModal({ onClose, onCreate, isLoading }: NewWorkflowModalProp
             onClick={onClose}
             className="px-4 py-2 text-sm rounded-lg border border-border-default text-content-secondary hover:bg-surface-hover"
           >
-            Abbrechen
+            Cancel
           </button>
           <button
             disabled={!name.trim() || isLoading}
             onClick={() => onCreate(name.trim(), type)}
             className="px-4 py-2 text-sm rounded-lg bg-accent text-white hover:bg-accent-hover disabled:opacity-50 disabled:cursor-not-allowed"
           >
-            {isLoading ? 'Erstelle…' : 'Erstellen'}
+            {isLoading ? 'Creating…' : 'Create'}
           </button>
         </div>
       </div>
@@ -529,7 +529,7 @@ function FlowCanvas({ workflow, onSave, isSaving }: FlowCanvasProps) {
     <div className="flex flex-col flex-1 min-h-0">
       {/* Canvas Toolbar */}
       <div className="flex items-center gap-2 px-4 py-2 border-b border-border-default bg-surface">
-        <span className="text-sm font-medium text-content-secondary mr-2">Nodes:</span>
+        <span className="text-sm font-medium text-content-secondary mr-2">Nodes</span>
         {NODE_PALETTE.map(item => (
           <div
             key={item.type}
@@ -551,7 +551,7 @@ function FlowCanvas({ workflow, onSave, isSaving }: FlowCanvasProps) {
             className="flex items-center gap-1.5 px-3 py-1.5 text-sm rounded-lg bg-accent text-white hover:bg-accent-hover disabled:opacity-50"
           >
             <Save size={14} />
-            {isSaving ? 'Speichere…' : 'Speichern'}
+            {isSaving ? 'Saving…' : 'Save'}
           </button>
         </div>
       </div>
@@ -605,9 +605,9 @@ export default function WorkflowEditor() {
       queryClient.invalidateQueries({ queryKey: ['workflows'] })
       setSelectedId(wf.id)
       setShowNewModal(false)
-      toast.success('Workflow erstellt')
+      toast.success('Workflow created')
     },
-    onError: () => toast.error('Fehler beim Erstellen'),
+    onError: () => toast.error('Failed to create workflow'),
   })
 
   const updateMutation = useMutation({
@@ -615,9 +615,9 @@ export default function WorkflowEditor() {
       updateWorkflow(id, { config }),
     onSuccess: () => {
       queryClient.invalidateQueries({ queryKey: ['workflows'] })
-      toast.success('Workflow gespeichert')
+      toast.success('Workflow saved')
     },
-    onError: () => toast.error('Fehler beim Speichern'),
+    onError: () => toast.error('Failed to save workflow'),
   })
 
   const deleteMutation = useMutation({
@@ -625,9 +625,9 @@ export default function WorkflowEditor() {
     onSuccess: () => {
       queryClient.invalidateQueries({ queryKey: ['workflows'] })
       setSelectedId(null)
-      toast.success('Workflow gelöscht')
+      toast.success('Workflow deleted')
     },
-    onError: () => toast.error('Fehler beim Löschen'),
+    onError: () => toast.error('Failed to delete workflow'),
   })
 
   const handleCreate = (name: string, type: WorkflowConfig['type']) => {
@@ -675,7 +675,7 @@ export default function WorkflowEditor() {
           <button
             onClick={() => setShowNewModal(true)}
             className="p-1 rounded hover:bg-surface-hover text-content-muted hover:text-content"
-            title="Neuer Workflow"
+            title="New Workflow"
           >
             <Plus size={16} />
           </button>
@@ -683,17 +683,17 @@ export default function WorkflowEditor() {
 
         <div className="flex-1 overflow-y-auto p-2 space-y-1">
           {isLoading && (
-            <p className="text-xs text-content-muted px-2 py-4 text-center">Lade…</p>
+            <p className="text-xs text-content-muted px-2 py-4 text-center">Loading…</p>
           )}
           {!isLoading && workflows.length === 0 && (
             <p className="text-xs text-content-muted px-2 py-4 text-center">
-              Noch keine Workflows.
+              No workflows yet.
               <br />
               <button
                 onClick={() => setShowNewModal(true)}
                 className="mt-1 text-accent hover:underline"
               >
-                + Neu erstellen
+                + Create new
               </button>
             </p>
           )}
@@ -712,12 +712,12 @@ export default function WorkflowEditor() {
                 <button
                   onClick={e => {
                     e.stopPropagation()
-                    if (confirm(`Workflow "${wf.name}" löschen?`)) {
+                    if (confirm(`Delete workflow "${wf.name}"?`)) {
                       deleteMutation.mutate(wf.id)
                     }
                   }}
                   className="opacity-0 group-hover:opacity-100 p-0.5 rounded hover:bg-red-100 hover:text-red-600 text-content-muted flex-shrink-0"
-                  title="Löschen"
+                  title="Delete"
                 >
                   <Trash2 size={12} />
                 </button>
@@ -730,7 +730,7 @@ export default function WorkflowEditor() {
                 {typeLabel[wf.config.type]}
               </span>
               {!wf.is_active && (
-                <span className="ml-1 text-xs text-content-muted">(inaktiv)</span>
+                <span className="ml-1 text-xs text-content-muted">(inactive)</span>
               )}
             </button>
           ))}
@@ -742,7 +742,7 @@ export default function WorkflowEditor() {
         {/* Header */}
         <div className="px-6 py-4 border-b border-border-default bg-surface flex items-center justify-between">
           <div>
-            <h1 className="text-xl font-semibold text-content">Workflow-Editor</h1>
+            <h1 className="text-xl font-semibold text-content">Workflow Editor</h1>
             {selectedWorkflow && (
               <p className="text-sm text-content-muted mt-0.5">{selectedWorkflow.name}</p>
             )}
@@ -752,7 +752,7 @@ export default function WorkflowEditor() {
             className="flex items-center gap-2 px-4 py-2 rounded-lg bg-accent text-white text-sm font-medium hover:bg-accent-hover transition-colors"
           >
             <Plus size={16} />
-            Neuer Workflow
+            New Workflow
           </button>
         </div>
 
@@ -768,16 +768,16 @@ export default function WorkflowEditor() {
           <div className="flex-1 flex items-center justify-center text-center">
             <div>
               <GitBranch size={48} className="mx-auto text-content-muted mb-4" />
-              <p className="text-content-secondary font-medium">Kein Workflow ausgewählt</p>
+              <p className="text-content-secondary font-medium">No workflow selected</p>
               <p className="text-sm text-content-muted mt-1">
-                Wähle einen Workflow aus der Liste oder erstelle einen neuen.
+                Select a workflow from the list or create a new one.
               </p>
               <button
                 onClick={() => setShowNewModal(true)}
                 className="mt-4 flex items-center gap-2 px-4 py-2 mx-auto rounded-lg bg-accent text-white text-sm font-medium hover:bg-accent-hover"
               >
                 <Plus size={16} />
-                Workflow erstellen
+                Create workflow
               </button>
             </div>
           </div>