diff --git a/.github/workflows/_ci.yaml b/.github/workflows/_ci.yaml
index 9345ecd89..dc89a349f 100644
--- a/.github/workflows/_ci.yaml
+++ b/.github/workflows/_ci.yaml
@@ -399,6 +399,161 @@ jobs:
         *-execution-combine.log
     secrets: inherit
 
+  test-nsys-jax-eks:
+    needs: build-jax
+    if: inputs.ARCHITECTURE == 'amd64' # arm64 runners n/a
+    runs-on: eks
+    env:
+      POST_PROCESS_JOB_DESCRIPTION: |
+        apiVersion: batch/v1
+        kind: Job
+        metadata:
+          name: ${{ github.run_id }}-${{ github.run_attempt }}-postprocess
+        spec:
+          template:
+            spec:
+              restartPolicy: Never
+              initContainers:
+              - name: download
+                image: amazon/aws-cli
+                command:
+                - aws
+                - s3
+                - cp
+                - --recursive
+                - --exclude
+                - "*"
+                - --include
+                - "${{ github.run_id }}-${{ github.run_attempt }}-rank*.zip"
+                - s3://jax-toolbox-eks-output/
+                - /opt/output
+                volumeMounts:
+                - mountPath: /opt/output
+                  name: output
+              containers:
+              - name: jax
+                image: ghcr.io/nvidia/jax:jax-2024-11-08
+                command:
+                - bash
+                - -exo
+                - pipefail
+                - -c
+                - nsys-jax-combine -o /opt/output/combined.zip /opt/output/*.zip --analysis communication
+                # FIXME: GPU not actually needed, but the test cluster doesn't have appropriate non-GPU nodes
+                resources:
+                  limits:
+                    nvidia.com/gpu: 1
+                volumeMounts:
+                - mountPath: /opt/output
+                  name: output
+              volumes:
+              - name: output
+                emptyDir: {}
+      JOB_DESCRIPTION: |
+        apiVersion: v1
+        kind: Service
+        metadata:
+          name: jax-headless-svc
+        spec:
+          clusterIP: None # clusterIP must be None to create a headless service
+          selector:
+            job-name: ${{ github.run_id }}-${{ github.run_attempt }}-jax # must match Job name
+        ---
+        apiVersion: batch/v1
+        kind: Job
+        metadata:
+          name: ${{ github.run_id }}-${{ github.run_attempt }}-jax
+        spec:
+          completions: 2 # number of nodes
+          parallelism: 2 # number of nodes
+          completionMode: Indexed
+          template:
+            spec:
+              subdomain: jax-headless-svc # has to match Service name
+              restartPolicy: Never
+              containers:
+              - name: jax
+                image: ghcr.io/nvidia/jax:jax-2024-11-08
+                ports:
+                - containerPort: 3389
+                command:
+                - sh
+                - -c
+                - |
+                  install-efa.sh
+                  nsys-jax \
+                    --output=/opt/output/rank%q{JOB_COMPLETION_INDEX}.zip \
+                    -- \
+                    jax-nccl-test \
+                    --coordinator-address \
+                    ${{ github.run_id }}-${{ github.run_attempt }}-jax-0.jax-headless-svc:3389 \
+                    --distributed \
+                    --gpus-per-process=8 \
+                    --process-count=2 \
+                    --process-id=$JOB_COMPLETION_INDEX
+                  touch /opt/output/.done
+                env:
+                - name: XLA_FLAGS
+                  value: --xla_gpu_enable_command_buffer=
+                resources:
+                  limits:
+                    nvidia.com/gpu: 8
+                    vpc.amazonaws.com/efa: 32
+                volumeMounts:
+                - mountPath: /dev/shm
+                  name: shmem
+                - mountPath: /opt/output
+                  name: output
+              - name: upload
+                image: amazon/aws-cli
+                command:
+                - sh
+                - -c
+                - |
+                  while [[ ! -f /opt/output/.done ]]; do
+                    sleep 1
+                  done
+                  aws s3 cp \
+                    /opt/output/rank${JOB_COMPLETION_INDEX}.zip \
+                    s3://jax-toolbox-eks-output/${{ github.run_id }}-${{ github.run_attempt }}-rank${JOB_COMPLETION_INDEX}.zip
+                volumeMounts:
+                - mountPath: /opt/output
+                  name: output
+              volumes:
+              - name: output
+                emptyDir: {}
+              - name: shmem
+                emptyDir:
+                  medium: Memory
+                  sizeLimit: 8Gi
+    steps:
+    - name: Submit Kubernetes job
+      run: kubectl apply -f - <<< "${JOB_DESCRIPTION}"
+    - name: Wait for Kubernetes job to start
+      run: |
+        while [[ -n $(kubectl get pods --selector=batch.kubernetes.io/job-name=${{ github.run_id }}-${{ github.run_attempt }}-jax --output=jsonpath='{.items[?(@.status.phase == "Pending")].metadata.name}') ]]; do
+          sleep 2
+        done
+    - name: Stream Kubernetes job output
+      run: kubectl logs --all-containers=true --all-pods=true --follow job/${{ github.run_id }}-${{ github.run_attempt }}-jax
+    # Clean up in case of errors as well as success
+    - name: Delete Kubernetes job
+      if: always()
+      run: kubectl delete job ${{ github.run_id }}-${{ github.run_attempt }}-jax
+    - name: Submit post-processing Kubernetes job
+      run: kubectl apply -f - <<< "${POST_PROCESS_JOB_DESCRIPTION}"
+    - name: Wait for post-processing Kubernetes job to start
+      run: |
+        while [[ -n $(kubectl get pods --selector=batch.kubernetes.io/job-name=${{ github.run_id }}-${{ github.run_attempt }}-postprocess --output=jsonpath='{.items[?(@.status.phase == "Pending")].metadata.name}') ]]; do
+          sleep 2
+        done
+    - name: Stream post-processing Kubernetes job output
+      run: kubectl logs --all-containers=true --all-pods=true --follow job/${{ github.run_id }}-${{ github.run_attempt }}-postprocess
+    # Clean up in case of errors as well as success
+    - name: Delete post-processing Kubernetes job
+      if: always()
+      run: kubectl delete job ${{ github.run_id }}-${{ github.run_attempt }}-postprocess
+
   # test-equinox:
   #   needs: build-equinox
   #   if: inputs.ARCHITECTURE == 'amd64' # arm64 runners n/a