diff --git a/api/src/routes/id-upload.ts b/api/src/routes/id-upload.ts
index 89dec37..86d0418 100644
--- a/api/src/routes/id-upload.ts
+++ b/api/src/routes/id-upload.ts
@@ -27,7 +27,6 @@ async function presign(key: string, method: "GET" | "PUT", expires = 3600): Prom
     if (!r.ok) return null;
     const data = (await r.json()) as { url?: string };
     let url = data.url || null;
-    // Rewrite internal minio:9000 to public HTTPS endpoint
     if (url) {
       url = url.replace(/^http:\/\/minio:9000\//, "https://minio.performancewest.net/");
     }
@@ -37,12 +36,9 @@ async function presign(key: string, method: "GET" | "PUT", expires = 3600): Prom
   }
 }
 
-/** Upload a buffer to MinIO using a presigned PUT URL. */
+/** Upload a buffer to MinIO via the workers. */
 async function uploadToMinio(key: string, buffer: Buffer, contentType: string): Promise<boolean> {
-  const putUrl = await presign(key, "PUT", 300);
-  if (!putUrl) return false;
   try {
-    // The presigned PUT URL may have internal hostname — use the workers endpoint directly
     const r = await fetch(`${WORKER_URL}/jobs/minio-upload`, {
       method: "POST",
       headers: { "Content-Type": "application/json" },
@@ -53,19 +49,11 @@ async function uploadToMinio(key: string, buffer: Buffer, contentType: string):
         bucket: MINIO_BUCKET,
       }),
     });
-    return r.ok;
+    if (!r.ok) return false;
+    const data = (await r.json()) as { success?: boolean };
+    return !!data.success;
   } catch {
-    // Fallback: try presigned PUT
-    try {
-      const resp = await fetch(putUrl.replace("https://minio.performancewest.net/", "http://minio:9000/"), {
-        method: "PUT",
-        headers: { "Content-Type": contentType },
-        body: buffer,
-      });
-      return resp.ok;
-    } catch {
-      return false;
-    }
+    return false;
   }
 }
 
diff --git a/scripts/workers/job_server.py b/scripts/workers/job_server.py
index d5292fa..4e73845 100644
--- a/scripts/workers/job_server.py
+++ b/scripts/workers/job_server.py
@@ -1910,6 +1910,30 @@ class JobHandler(BaseHTTPRequestHandler):
             self._handle_rmd_preview()
             return
 
+        if self.path == "/jobs/presign":
+            # Synchronous presign — used by API routes
+            content_length = int(self.headers.get("Content-Length", 0))
+            body = self.rfile.read(content_length)
+            try:
+                payload = json.loads(body)
+                result = handle_presign(payload)
+                self._respond(200, result)
+            except Exception as exc:
+                self._respond(500, {"error": str(exc)})
+            return
+
+        if self.path == "/jobs/minio-upload":
+            # Synchronous MinIO upload — used by id-upload
+            content_length = int(self.headers.get("Content-Length", 0))
+            body = self.rfile.read(content_length)
+            try:
+                payload = json.loads(body)
+                result = handle_minio_upload(payload)
+                self._respond(200, result)
+            except Exception as exc:
+                self._respond(500, {"error": str(exc)})
+            return
+
         if self.path != "/jobs":
             self._respond(404, {"error": "Not found"})
             return