diff --git a/.changeset/poor-coats-boil.md b/.changeset/poor-coats-boil.md
new file mode 100644
index 0000000000..b81843806b
--- /dev/null
+++ b/.changeset/poor-coats-boil.md
@@ -0,0 +1,6 @@
+---
+'@backstage/plugin-notifications-backend': minor
+'@backstage/plugin-notifications': minor
+---
+
+notifications-backend URL query parameters changed from sort/sortOrder to orderField and created_after to createdAfter to unify with other plugins
diff --git a/plugins/notifications-backend/src/service/router.ts b/plugins/notifications-backend/src/service/router.ts
index 959cd7e280..e72775f06f 100644
--- a/plugins/notifications-backend/src/service/router.ts
+++ b/plugins/notifications-backend/src/service/router.ts
@@ -206,8 +206,8 @@ export async function createRouter(
       opts.saved = false;
       // or keep undefined
     }
-    if (req.query.created_after) {
-      const sinceEpoch = Date.parse(String(req.query.created_after));
+    if (req.query.createdAfter) {
+      const sinceEpoch = Date.parse(String(req.query.createdAfter));
       if (isNaN(sinceEpoch)) {
         throw new InputError('Unexpected date format');
       }
diff --git a/plugins/notifications/src/api/NotificationsClient.test.ts b/plugins/notifications/src/api/NotificationsClient.test.ts
index daf9e71232..e9acd04fc9 100644
--- a/plugins/notifications/src/api/NotificationsClient.test.ts
+++ b/plugins/notifications/src/api/NotificationsClient.test.ts
@@ -60,7 +60,7 @@ describe('NotificationsClient', () => {
       server.use(
         rest.get(`${mockBaseUrl}/`, (req, res, ctx) => {
           expect(req.url.search).toBe(
-            '?limit=10&offset=0&search=find+me&read=true&created_after=1970-01-01T00%3A00%3A00.005Z',
+            '?limit=10&offset=0&search=find+me&read=true&createdAfter=1970-01-01T00%3A00%3A00.005Z',
           );
           return res(ctx.json(expectedResp));
         }),
diff --git a/plugins/notifications/src/api/NotificationsClient.ts b/plugins/notifications/src/api/NotificationsClient.ts
index 047c594530..c4fffded9e 100644
--- a/plugins/notifications/src/api/NotificationsClient.ts
+++ b/plugins/notifications/src/api/NotificationsClient.ts
@@ -65,7 +65,7 @@ export class NotificationsClient implements NotificationsApi {
       queryString.append('saved', options.saved ? 'true' : 'false');
     }
     if (options?.createdAfter !== undefined) {
-      queryString.append('created_after', options.createdAfter.toISOString());
+      queryString.append('createdAfter', options.createdAfter.toISOString());
     }
     if (options?.minimumSeverity !== undefined) {
       queryString.append('minimal_severity', options.minimumSeverity);