diff --git a/README.md b/README.md
index 67b95939..2e9caa56 100644
--- a/README.md
+++ b/README.md
@@ -680,6 +680,21 @@ See also [`config-gradle`](#config-gradle) input environment variables.
 | `provenance`                | Whether to generate provenance attestation for built artifacts                                                               | `false`                                                                                     |
 | `provenance-artifact-paths` | Relative paths of artifacts for provenance attestation (glob pattern). See [Provenance Attestation](#provenance-attestation) | (optional)                                                                                  |
 | `generate-summary`          | Whether to generate a workflow summary after the build                                                                       | `true`                                                                                      |
+| `job-identifier`            | Unique identifier for the problems-report artifact name. Set to a matrix dimension (e.g. `${{ matrix.module }}`) when using this action inside a reusable workflow invoked in a matrix. Auto-generated UUID when omitted. | (optional) |
+
+> [!TIP]
+> When using this action inside a reusable workflow that is itself called in a matrix, set
+> `job-identifier` to a matrix dimension to produce readable artifact names:
+>
+> ```yaml
+> - uses: SonarSource/ci-github-actions/build-gradle@v1
+>   with:
+>     job-identifier: ${{ matrix.module }}
+> ```
+>
+> Without this, a UUID is generated automatically — artifact names will be unique but opaque.
+
+<!-- -->
 
 > [!TIP]
 > When using `working-directory`, Java must be available at root due to a limitation
@@ -957,6 +972,19 @@ See also [`config-npm`](#config-npm) input environment variables.
 | `provenance`                | Whether to generate provenance attestation for built artifacts                                                               | `false`                                                                                      |
 | `provenance-artifact-paths` | Relative paths of artifacts for provenance attestation (glob pattern). See [Provenance Attestation](#provenance-attestation) | (optional)                                                                                   |
 | `generate-summary`          | Whether to generate a workflow summary after the build                                                                       | `true`                                                                                       |
+| `job-identifier`            | Unique identifier for the npm-logs artifact name. Set to a matrix dimension (e.g. `${{ matrix.module }}`) when using this action inside a reusable workflow invoked in a matrix. Auto-generated UUID when omitted. | (optional) |
+
+> [!TIP]
+> When using this action inside a reusable workflow that is itself called in a matrix, set
+> `job-identifier` to a matrix dimension to produce readable artifact names:
+>
+> ```yaml
+> - uses: SonarSource/ci-github-actions/build-npm@v1
+>   with:
+>     job-identifier: ${{ matrix.module }}
+> ```
+>
+> Without this, a UUID is generated automatically — artifact names will be unique but opaque.
 
 ### Outputs
 
diff --git a/build-gradle/action.yml b/build-gradle/action.yml
index 99fceea7..8c2e517d 100644
--- a/build-gradle/action.yml
+++ b/build-gradle/action.yml
@@ -67,6 +67,13 @@ inputs:
   generate-summary:
     description: Whether to generate a workflow summary after the build.
     default: 'true'
+  job-identifier:
+    description: >-
+      Unique identifier appended to the artifact name (`problems-report-<job-identifier>`).
+      Set this to a matrix dimension value (e.g. the value of `matrix.module`) when calling this action
+      from a reusable workflow that is invoked in a matrix, to produce human-readable artifact
+      names. When omitted, a random value is generated to guarantee uniqueness.
+    default: ''
 
 outputs:
   project-version:
@@ -175,11 +182,17 @@ runs:
       working-directory: ${{ inputs.working-directory }}
       run: $ACTION_PATH_BUILD_GRADLE/build.sh
 
+    - name: Generate unique job ID
+      id: uid
+      if: always()
+      shell: bash
+      run: echo "value=$RANDOM$RANDOM" >> "$GITHUB_OUTPUT"
+
     - name: Archive problems report
       if: always()
       uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
       with:
-        name: problems-report-${{ github.job }}${{ strategy.job-index }}
+        name: problems-report-${{ inputs.job-identifier != '' && inputs.job-identifier || steps.uid.outputs.value }}
         path: build/reports/problems/problems-report.html
         if-no-files-found: ignore
 
diff --git a/build-npm/action.yml b/build-npm/action.yml
index c85288a1..b703eb2b 100644
--- a/build-npm/action.yml
+++ b/build-npm/action.yml
@@ -59,6 +59,13 @@ inputs:
   generate-summary:
     description: Whether to generate a workflow summary after the build.
     default: 'true'
+  job-identifier:
+    description: >-
+      Unique identifier appended to the artifact name (`npm-logs-<job-identifier>`).
+      Set this to a matrix dimension value (e.g. the value of `matrix.module`) when calling this action
+      from a reusable workflow that is invoked in a matrix, to produce human-readable artifact
+      names. When omitted, a random value is generated to guarantee uniqueness.
+    default: ''
 
 outputs:
   BUILD_NUMBER:
@@ -173,11 +180,17 @@ runs:
       working-directory: ${{ inputs.working-directory }}
       run: $ACTION_PATH_BUILD_NPM/build.sh
 
+    - name: Generate unique job ID
+      id: uid
+      if: always()
+      shell: bash
+      run: echo "value=$RANDOM$RANDOM" >> "$GITHUB_OUTPUT"
+
     - name: Archive logs
       if: failure()
       uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
       with:
-        name: npm-logs-${{ github.job }}${{ strategy.job-index }}
+        name: npm-logs-${{ inputs.job-identifier != '' && inputs.job-identifier || steps.uid.outputs.value }}
         path: ~/.npm/_logs/
         if-no-files-found: ignore