diff --git a/batch/create/create_batch_custom_network.js b/batch/create/create_batch_custom_network.js
new file mode 100644
index 0000000000..a866d10d91
--- /dev/null
+++ b/batch/create/create_batch_custom_network.js
@@ -0,0 +1,134 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+'use strict';
+
+async function main() {
+  // [START batch_create_custom_network]
+  // Imports the Batch library
+  const batchLib = require('@google-cloud/batch');
+  const batch = batchLib.protos.google.cloud.batch.v1;
+
+  // Instantiates a client
+  const batchClient = new batchLib.v1.BatchServiceClient();
+
+  /**
+   * TODO(developer): Update these variables before running the sample.
+   */
+  // Project ID or project number of the Google Cloud project you want to use.
+  const projectId = await batchClient.getProjectId();
+  // Name of the region you want to use to run the job. Regions that are
+  // available for Batch are listed on: https://cloud.google.com/batch/docs/get-started#locations
+  const region = 'europe-central2';
+  // The name of the job that will be created.
+  // It needs to be unique for each project and region pair.
+  const jobName = 'example-job';
+  // The name of a VPC network in the current project or a Shared VPC network that is hosted by
+  // or shared with the current project.
+  const network = 'global/networks/test-network';
+  // The name of a subnetwork that is part of the VPC network and is located
+  // in the same region as the VMs for the job.
+  const subnetwork = `regions/${region}/subnetworks/subnet`;
+
+  // Define what will be done as part of the job.
+  const runnable = new batch.Runnable({
+    script: new batch.Runnable.Script({
+      commands: ['-c', 'echo Hello world! This is task ${BATCH_TASK_INDEX}.'],
+    }),
+  });
+
+  // Specify what resources are requested by each task.
+  const computeResource = new batch.ComputeResource({
+    // In milliseconds per cpu-second. This means the task requires 50% of a single CPUs.
+    cpuMilli: 500,
+    // In MiB.
+    memoryMib: 16,
+  });
+
+  const task = new batch.TaskSpec({
+    runnables: [runnable],
+    computeResource,
+    maxRetryCount: 2,
+    maxRunDuration: {seconds: 3600},
+  });
+
+  // Tasks are grouped inside a job using TaskGroups.
+  const group = new batch.TaskGroup({
+    taskCount: 3,
+    taskSpec: task,
+  });
+
+  // Specify VPC network and a subnet for Allocation Policy
+  const networkPolicy = new batch.AllocationPolicy.NetworkPolicy({
+    networkInterfaces: [
+      new batch.AllocationPolicy.NetworkInterface({
+        // Set the network name
+        network,
+        // Set the subnetwork name
+        subnetwork,
+        // Blocks external access for all VMs
+        noExternalIpAddress: true,
+      }),
+    ],
+  });
+
+  // Policies are used to define on what kind of virtual machines the tasks will run on.
+  // In this case, we tell the system to use "e2-standard-4" machine type.
+  // Read more about machine types here: https://cloud.google.com/compute/docs/machine-types
+  const instancePolicy = new batch.AllocationPolicy.InstancePolicy({
+    machineType: 'e2-standard-4',
+  });
+
+  const allocationPolicy = new batch.AllocationPolicy.InstancePolicyOrTemplate({
+    policy: instancePolicy,
+    network: networkPolicy,
+  });
+
+  const job = new batch.Job({
+    name: jobName,
+    taskGroups: [group],
+    labels: {env: 'testing', type: 'script'},
+    allocationPolicy,
+    // We use Cloud Logging as it's an option available out of the box
+    logsPolicy: new batch.LogsPolicy({
+      destination: batch.LogsPolicy.Destination.CLOUD_LOGGING,
+    }),
+  });
+
+  // The job's parent is the project and region in which the job will run
+  const parent = `projects/${projectId}/locations/${region}`;
+
+  async function callCreateBatchCustomNetwork() {
+    // Construct request
+    const request = {
+      parent,
+      jobId: jobName,
+      job,
+    };
+
+    // Run request
+    const [response] = await batchClient.createJob(request);
+    console.log(JSON.stringify(response));
+  }
+
+  await callCreateBatchCustomNetwork();
+  // [END batch_create_custom_network]
+}
+
+main().catch(err => {
+  console.error(err.message);
+  process.exitCode = 1;
+});
diff --git a/batch/test/advanced_creation.test.js b/batch/test/advanced_creation.test.js
index 875f47274a..d7075263bb 100644
--- a/batch/test/advanced_creation.test.js
+++ b/batch/test/advanced_creation.test.js
@@ -18,14 +18,9 @@ const path = require('path');
 const cp = require('child_process');
 const {describe, it, before} = require('mocha');
 const {BatchServiceClient} = require('@google-cloud/batch').v1;
-const batchClient = new BatchServiceClient();
 const {Storage} = require('@google-cloud/storage');
-const storage = new Storage();
 const {ProjectsClient} = require('@google-cloud/resource-manager').v3;
-const resourcemanagerClient = new ProjectsClient();
 const compute = require('@google-cloud/compute');
-const instanceTemplatesClient = new compute.InstanceTemplatesClient();
-
 // get a short ID for this test run that only contains characters that are valid in UUID
 // (a plain UUID won't do because we want the "test-job-js" prefix and that would exceed the length limit)
 const {customAlphabet} = require('nanoid');
@@ -36,6 +31,11 @@ const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
 
 const cwd = path.join(__dirname, '..');
 
+const batchClient = new BatchServiceClient();
+const storage = new Storage();
+const resourcemanagerClient = new ProjectsClient();
+const instanceTemplatesClient = new compute.InstanceTemplatesClient();
+
 describe('Create jobs with container, template and bucket', () => {
   let projectId;
   let bucketName;
diff --git a/batch/test/batchClient_operations.js b/batch/test/batchClient_operations.js
deleted file mode 100644
index 84342be856..0000000000
--- a/batch/test/batchClient_operations.js
+++ /dev/null
@@ -1,30 +0,0 @@
-// Copyright 2024 Google LLC
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     https://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-'use strict';
-
-async function deleteJob(batchClient, projectId, region, jobId) {
-  const request = {
-    name: `projects/${projectId}/locations/${region}/jobs/${jobId}`,
-  };
-  try {
-    await batchClient.deleteJob(request);
-  } catch (err) {
-    console.error('Deleting job failed: ', err);
-  }
-}
-
-module.exports = {
-  deleteJob,
-};
diff --git a/batch/test/create_batch_custom_events.test.js b/batch/test/create_batch_custom_events.test.js
index 3a5463042d..dc0ba14a41 100644
--- a/batch/test/create_batch_custom_events.test.js
+++ b/batch/test/create_batch_custom_events.test.js
@@ -17,18 +17,18 @@
 'use strict';
 
 const path = require('path');
-const assert = require('assert');
+const assert = require('node:assert/strict');
 const {describe, it} = require('mocha');
-const cp = require('child_process');
-const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
 const cwd = path.join(__dirname, '..');
 const {BatchServiceClient} = require('@google-cloud/batch').v1;
-const {deleteJob} = require('./batchClient_operations');
-const batchClient = new BatchServiceClient();
+
+const cp = require('child_process');
+const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
 
 describe('Create batch custom events job', async () => {
   const jobName = 'batch-custom-events-job';
   const region = 'europe-central2';
+  const batchClient = new BatchServiceClient();
   let projectId;
 
   before(async () => {
@@ -36,7 +36,9 @@ describe('Create batch custom events job', async () => {
   });
 
   after(async () => {
-    await deleteJob(batchClient, projectId, region, jobName);
+    await batchClient.deleteJob({
+      name: `projects/${projectId}/locations/${region}/jobs/${jobName}`,
+    });
   });
 
   it('should create a new job with custom events', () => {
diff --git a/batch/test/create_batch_custom_network.test.js b/batch/test/create_batch_custom_network.test.js
new file mode 100644
index 0000000000..54449b09e0
--- /dev/null
+++ b/batch/test/create_batch_custom_network.test.js
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+'use strict';
+
+const path = require('path');
+const assert = require('node:assert/strict');
+const {describe, it} = require('mocha');
+const cp = require('child_process');
+const {BatchServiceClient} = require('@google-cloud/batch').v1;
+
+const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
+const cwd = path.join(__dirname, '..');
+
+describe('Create batch custom network', async () => {
+  const jobName = 'example-job';
+  const region = 'europe-central2';
+  const batchClient = new BatchServiceClient();
+  let projectId;
+
+  before(async () => {
+    projectId = await batchClient.getProjectId();
+  });
+
+  after(async () => {
+    await batchClient.deleteJob({
+      name: `projects/${projectId}/locations/${region}/jobs/${jobName}`,
+    });
+  });
+
+  it('should create a new job with custom network', async () => {
+    const expectedNetwork = {
+      networkInterfaces: [
+        {
+          network: 'global/networks/test-network',
+          noExternalIpAddress: true,
+          subnetwork: `regions/${region}/subnetworks/subnet`,
+        },
+      ],
+    };
+
+    const response = JSON.parse(
+      execSync('node ./create/create_batch_custom_network.js', {
+        cwd,
+      })
+    );
+
+    assert.deepEqual(response.allocationPolicy.network, expectedNetwork);
+  });
+});
diff --git a/batch/test/create_batch_labels_allocation.test.js b/batch/test/create_batch_labels_allocation.test.js
index 262f647549..cf1a9f4714 100644
--- a/batch/test/create_batch_labels_allocation.test.js
+++ b/batch/test/create_batch_labels_allocation.test.js
@@ -17,18 +17,18 @@
 'use strict';
 
 const path = require('path');
-const assert = require('assert');
+const assert = require('node:assert/strict');
 const {describe, it} = require('mocha');
 const cp = require('child_process');
+const {BatchServiceClient} = require('@google-cloud/batch').v1;
+
 const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
 const cwd = path.join(__dirname, '..');
-const {BatchServiceClient} = require('@google-cloud/batch').v1;
-const {deleteJob} = require('./batchClient_operations');
-const batchClient = new BatchServiceClient();
 
 describe('Create batch labels allocation', async () => {
   const jobName = 'batch-labels-allocation-job';
   const region = 'europe-central2';
+  const batchClient = new BatchServiceClient();
   let projectId;
 
   before(async () => {
@@ -36,7 +36,9 @@ describe('Create batch labels allocation', async () => {
   });
 
   after(async () => {
-    await deleteJob(batchClient, projectId, region, jobName);
+    await batchClient.deleteJob({
+      name: `projects/${projectId}/locations/${region}/jobs/${jobName}`,
+    });
   });
 
   it('should create a new job with allocation policy labels', async () => {
diff --git a/batch/test/create_batch_labels_job.test.js b/batch/test/create_batch_labels_job.test.js
index 1777973ec1..ff7bb900fb 100644
--- a/batch/test/create_batch_labels_job.test.js
+++ b/batch/test/create_batch_labels_job.test.js
@@ -17,18 +17,18 @@
 'use strict';
 
 const path = require('path');
-const assert = require('assert');
+const assert = require('node:assert/strict');
 const {describe, it} = require('mocha');
 const cp = require('child_process');
+const {BatchServiceClient} = require('@google-cloud/batch').v1;
+
 const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
 const cwd = path.join(__dirname, '..');
-const {BatchServiceClient} = require('@google-cloud/batch').v1;
-const {deleteJob} = require('./batchClient_operations');
-const batchClient = new BatchServiceClient();
 
 describe('Create batch labels for job', async () => {
   const jobName = 'batch-labels-job';
   const region = 'europe-central2';
+  const batchClient = new BatchServiceClient();
   let projectId;
 
   before(async () => {
@@ -36,7 +36,9 @@ describe('Create batch labels for job', async () => {
   });
 
   after(async () => {
-    await deleteJob(batchClient, projectId, region, jobName);
+    await batchClient.deleteJob({
+      name: `projects/${projectId}/locations/${region}/jobs/${jobName}`,
+    });
   });
 
   it('should create a new job with labels', async () => {
diff --git a/batch/test/create_batch_labels_runnable.test.js b/batch/test/create_batch_labels_runnable.test.js
index aeffd9a3a7..5a4c79234c 100644
--- a/batch/test/create_batch_labels_runnable.test.js
+++ b/batch/test/create_batch_labels_runnable.test.js
@@ -20,15 +20,15 @@ const path = require('path');
 const assert = require('assert');
 const {describe, it} = require('mocha');
 const cp = require('child_process');
+const {BatchServiceClient} = require('@google-cloud/batch').v1;
+
 const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
 const cwd = path.join(__dirname, '..');
-const {BatchServiceClient} = require('@google-cloud/batch').v1;
-const {deleteJob} = require('./batchClient_operations');
-const batchClient = new BatchServiceClient();
 
 describe('Create batch labels runnable', async () => {
   const jobName = 'example-job';
   const region = 'us-central1';
+  const batchClient = new BatchServiceClient();
   let projectId;
 
   before(async () => {
@@ -36,7 +36,9 @@ describe('Create batch labels runnable', async () => {
   });
 
   after(async () => {
-    await deleteJob(batchClient, projectId, region, jobName);
+    await batchClient.deleteJob({
+      name: `projects/${projectId}/locations/${region}/jobs/${jobName}`,
+    });
   });
 
   it('should create a new job with labels for runnables', async () => {
diff --git a/batch/test/create_batch_notifications.test.js b/batch/test/create_batch_notifications.test.js
index 164d110d74..ea85682d6f 100644
--- a/batch/test/create_batch_notifications.test.js
+++ b/batch/test/create_batch_notifications.test.js
@@ -17,30 +17,19 @@
 'use strict';
 
 const path = require('path');
-const assert = require('assert');
+const assert = require('node:assert/strict');
 const {describe, it} = require('mocha');
 const cp = require('child_process');
-const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
-const cwd = path.join(__dirname, '..');
 const {BatchServiceClient} = require('@google-cloud/batch').v1;
-const batchClient = new BatchServiceClient();
 
-async function deleteJob(projectId, region, jobId) {
-  const request = {
-    name: `projects/${projectId}/locations/${region}/jobs/${jobId}`,
-  };
-  try {
-    await batchClient.deleteJob(request);
-  } catch (err) {
-    console.error('Error deleting job:', err);
-  }
-}
+const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
+const cwd = path.join(__dirname, '..');
 
 describe('Create batch notifications', async () => {
   const jobName = 'job-name-batch-notifications';
   const region = 'europe-central2';
   const topicId = 'topic-id';
-
+  const batchClient = new BatchServiceClient();
   let projectId;
 
   before(async () => {
@@ -48,7 +37,9 @@ describe('Create batch notifications', async () => {
   });
 
   after(async () => {
-    await deleteJob(projectId, region, jobName);
+    await batchClient.deleteJob({
+      name: `projects/${projectId}/locations/${region}/jobs/${jobName}`,
+    });
   });
 
   it('should create a new job with batch notifications', async () => {
diff --git a/batch/test/create_batch_using_service_account.test.js b/batch/test/create_batch_using_service_account.test.js
index e0d2cebffb..8d27822cc0 100644
--- a/batch/test/create_batch_using_service_account.test.js
+++ b/batch/test/create_batch_using_service_account.test.js
@@ -17,18 +17,17 @@
 'use strict';
 
 const path = require('path');
-const assert = require('assert');
+const assert = require('node:assert/strict');
 const {describe, it} = require('mocha');
 const cp = require('child_process');
-const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
-const cwd = path.join(__dirname, '..');
 const {BatchServiceClient} = require('@google-cloud/batch').v1;
 const {ProjectsClient} = require('@google-cloud/resource-manager').v3;
-const {deleteJob} = require('./batchClient_operations');
-const batchClient = new BatchServiceClient();
-const resourceManagerClient = new ProjectsClient();
+
+const cwd = path.join(__dirname, '..');
+const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
 
 async function getProjectNumber(projectId) {
+  const resourceManagerClient = new ProjectsClient();
   // Construct request
   const request = {
     name: `projects/${projectId}`,
@@ -42,6 +41,7 @@ async function getProjectNumber(projectId) {
 describe('Create batch job using service account', async () => {
   const jobName = 'batch-service-account-job';
   const region = 'europe-central2';
+  const batchClient = new BatchServiceClient();
   let projectId, serviceAccountEmail;
 
   before(async () => {
@@ -50,7 +50,9 @@ describe('Create batch job using service account', async () => {
   });
 
   afterEach(async () => {
-    await deleteJob(batchClient, projectId, region, jobName);
+    await batchClient.deleteJob({
+      name: `projects/${projectId}/locations/${region}/jobs/${jobName}`,
+    });
   });
 
   it('should create a new job using serviceAccount', async () => {
diff --git a/batch/test/create_gpu_job.test.js b/batch/test/create_gpu_job.test.js
index 58c076d017..634916c9bb 100644
--- a/batch/test/create_gpu_job.test.js
+++ b/batch/test/create_gpu_job.test.js
@@ -17,28 +17,18 @@
 'use strict';
 
 const path = require('path');
-const assert = require('assert');
+const assert = require('node:assert/strict');
 const {describe, it} = require('mocha');
 const cp = require('child_process');
-const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
-const cwd = path.join(__dirname, '..');
 const {BatchServiceClient} = require('@google-cloud/batch').v1;
-const batchClient = new BatchServiceClient();
 
-async function deleteJob(projectId, region, jobId) {
-  const request = {
-    name: `projects/${projectId}/locations/${region}/jobs/${jobId}`,
-  };
-  try {
-    await batchClient.deleteJob(request);
-  } catch (err) {
-    console.error('Error deleting job:', err);
-  }
-}
+const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
+const cwd = path.join(__dirname, '..');
 
 describe('Create batch GPU job', async () => {
   const jobName = 'batch-gpu-job';
   const region = 'europe-central2';
+  const batchClient = new BatchServiceClient();
   let projectId;
 
   before(async () => {
@@ -46,7 +36,9 @@ describe('Create batch GPU job', async () => {
   });
 
   after(async () => {
-    await deleteJob(projectId, region, jobName);
+    await batchClient.deleteJob({
+      name: `projects/${projectId}/locations/${region}/jobs/${jobName}`,
+    });
   });
 
   it('should create a new job with GPU', async () => {
diff --git a/batch/test/create_gpu_job_n1.test.js b/batch/test/create_gpu_job_n1.test.js
index a26ea8b7ab..f0c52b9021 100644
--- a/batch/test/create_gpu_job_n1.test.js
+++ b/batch/test/create_gpu_job_n1.test.js
@@ -17,28 +17,18 @@
 'use strict';
 
 const path = require('path');
-const assert = require('assert');
+const assert = require('node:assert/strict');
 const {describe, it} = require('mocha');
 const cp = require('child_process');
-const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
-const cwd = path.join(__dirname, '..');
 const {BatchServiceClient} = require('@google-cloud/batch').v1;
-const batchClient = new BatchServiceClient();
 
-async function deleteJob(projectId, region, jobId) {
-  const request = {
-    name: `projects/${projectId}/locations/${region}/jobs/${jobId}`,
-  };
-  try {
-    await batchClient.deleteJob(request);
-  } catch (err) {
-    console.error('Error deleting job:', err);
-  }
-}
+const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
+const cwd = path.join(__dirname, '..');
 
 describe('Create batch GPU job on N1', async () => {
   const jobName = 'batch-gpu-job-n1';
   const region = 'europe-central2';
+  const batchClient = new BatchServiceClient();
   let projectId;
 
   before(async () => {
@@ -46,7 +36,9 @@ describe('Create batch GPU job on N1', async () => {
   });
 
   after(async () => {
-    await deleteJob(projectId, region, jobName);
+    await batchClient.deleteJob({
+      name: `projects/${projectId}/locations/${region}/jobs/${jobName}`,
+    });
   });
 
   it('should create a new job with GPU on N1', async () => {
diff --git a/batch/test/create_local_ssd_job.test.js b/batch/test/create_local_ssd_job.test.js
index 773f6ffa7e..f2396dff56 100644
--- a/batch/test/create_local_ssd_job.test.js
+++ b/batch/test/create_local_ssd_job.test.js
@@ -17,29 +17,18 @@
 'use strict';
 
 const path = require('path');
-const assert = require('assert');
+const assert = require('node:assert/strict');
 const {describe, it} = require('mocha');
 const cp = require('child_process');
-const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
-const cwd = path.join(__dirname, '..');
 const {BatchServiceClient} = require('@google-cloud/batch').v1;
-const batchClient = new BatchServiceClient();
 
-async function deleteJob(projectId, region, jobId) {
-  const request = {
-    name: `projects/${projectId}/locations/${region}/jobs/${jobId}`,
-  };
-  try {
-    await batchClient.deleteJob(request);
-  } catch (err) {
-    console.error('Error deleting job:', err);
-  }
-}
+const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
+const cwd = path.join(__dirname, '..');
 
 describe('Create batch local ssd job', async () => {
   const jobName = 'batch-local-ssd-job';
   const region = 'europe-central2';
-
+  const batchClient = new BatchServiceClient();
   let projectId;
 
   before(async () => {
@@ -47,7 +36,9 @@ describe('Create batch local ssd job', async () => {
   });
 
   after(async () => {
-    await deleteJob(projectId, region, jobName);
+    await batchClient.deleteJob({
+      name: `projects/${projectId}/locations/${region}/jobs/${jobName}`,
+    });
   });
 
   it('should create a new job with local ssd', async () => {
diff --git a/batch/test/create_nfs_job.test.js b/batch/test/create_nfs_job.test.js
index f463da5020..ff73d979d5 100644
--- a/batch/test/create_nfs_job.test.js
+++ b/batch/test/create_nfs_job.test.js
@@ -17,19 +17,18 @@
 'use strict';
 
 const path = require('path');
-const assert = require('assert');
+const assert = require('node:assert/strict');
 const {describe, it} = require('mocha');
 const cp = require('child_process');
+const {BatchServiceClient} = require('@google-cloud/batch').v1;
+
 const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
 const cwd = path.join(__dirname, '..');
-const {BatchServiceClient} = require('@google-cloud/batch').v1;
-const {deleteJob} = require('./batchClient_operations');
-const batchClient = new BatchServiceClient();
 
 describe('Create batch NFS job', async () => {
   const jobName = 'batch-nfs-job';
   const region = 'europe-central2';
-
+  const batchClient = new BatchServiceClient();
   let projectId;
 
   before(async () => {
@@ -37,7 +36,9 @@ describe('Create batch NFS job', async () => {
   });
 
   after(async () => {
-    await deleteJob(batchClient, projectId, region, jobName);
+    await batchClient.deleteJob({
+      name: `projects/${projectId}/locations/${region}/jobs/${jobName}`,
+    });
   });
 
   it('should create a new job with NFS', async () => {
diff --git a/batch/test/create_persistent_disk_job.test.js b/batch/test/create_persistent_disk_job.test.js
index e373e95ed6..9228273a6b 100644
--- a/batch/test/create_persistent_disk_job.test.js
+++ b/batch/test/create_persistent_disk_job.test.js
@@ -17,29 +17,18 @@
 'use strict';
 
 const path = require('path');
-const assert = require('assert');
+const assert = require('node:assert/strict');
 const {describe, it} = require('mocha');
 const cp = require('child_process');
-const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
-const cwd = path.join(__dirname, '..');
 const {BatchServiceClient} = require('@google-cloud/batch').v1;
-const batchClient = new BatchServiceClient();
 
-async function deleteJob(projectId, region, jobId) {
-  const request = {
-    name: `projects/${projectId}/locations/${region}/jobs/${jobId}`,
-  };
-  try {
-    await batchClient.deleteJob(request);
-  } catch (err) {
-    console.error('Error deleting job:', err);
-  }
-}
+const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
+const cwd = path.join(__dirname, '..');
 
 describe('Create batch job with persistent disk', async () => {
   const jobName = 'batch-create-persistent-disk-job';
   const region = 'europe-central2';
-
+  const batchClient = new BatchServiceClient();
   let projectId;
 
   before(async () => {
@@ -47,7 +36,9 @@ describe('Create batch job with persistent disk', async () => {
   });
 
   after(async () => {
-    await deleteJob(projectId, region, jobName);
+    await batchClient.deleteJob({
+      name: `projects/${projectId}/locations/${region}/jobs/${jobName}`,
+    });
   });
 
   it('should create a new job with persistent disk', async () => {
diff --git a/batch/test/create_using_secret_manager.test.js b/batch/test/create_using_secret_manager.test.js
index 6a963dd174..fbe45f15e6 100644
--- a/batch/test/create_using_secret_manager.test.js
+++ b/batch/test/create_using_secret_manager.test.js
@@ -17,19 +17,18 @@
 'use strict';
 
 const path = require('path');
-const assert = require('assert');
+const assert = require('node:assert/strict');
 const {describe, it} = require('mocha');
 const cp = require('child_process');
+const {BatchServiceClient} = require('@google-cloud/batch').v1;
+
 const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
 const cwd = path.join(__dirname, '..');
-const {BatchServiceClient} = require('@google-cloud/batch').v1;
-const {deleteJob} = require('./batchClient_operations');
-const batchClient = new BatchServiceClient();
 
 describe('Create batch using secret manager', async () => {
   const jobName = 'batch-job-secret-manager';
   const region = 'europe-central2';
-
+  const batchClient = new BatchServiceClient();
   let projectId;
 
   before(async () => {
@@ -37,7 +36,9 @@ describe('Create batch using secret manager', async () => {
   });
 
   after(async () => {
-    await deleteJob(batchClient, projectId, region, jobName);
+    await batchClient.deleteJob({
+      name: `projects/${projectId}/locations/${region}/jobs/${jobName}`,
+    });
   });
 
   it('should create a new job using secret manager', async () => {