diff --git a/tests/etl/taskcluster_pulse/test_handler.py b/tests/etl/taskcluster_pulse/test_handler.py
index ecfe4e0ce17..018dc75ea2d 100644
--- a/tests/etl/taskcluster_pulse/test_handler.py
+++ b/tests/etl/taskcluster_pulse/test_handler.py
@@ -1,6 +1,48 @@
 import pytest
 
-from treeherder.etl.taskcluster_pulse.handler import handle_message, handle_task_defined
+from treeherder.etl.taskcluster_pulse.handler import (
+    create_log_reference,
+    handle_message,
+    handle_task_defined,
+)
+
+ROOT_URL = "https://firefox-ci-tc.services.mozilla.com"
+TASK_ID = "AJBb7wqZT6K9kz4niYAatg"
+
+
+def test_create_log_reference_emits_live_backing_log_by_default():
+    logs = create_log_reference(ROOT_URL, TASK_ID, 0)
+    assert len(logs) == 1
+    assert logs[0]["name"] == "live_backing_log"
+    assert logs[0]["url"].endswith(f"task/{TASK_ID}/runs/0/artifacts/public/logs/live_backing.log")
+
+
+def test_create_log_reference_only_live_backing_log_when_no_raw_log():
+    artifacts = [
+        {"name": "public/logs/live_backing.log"},
+        {"name": "public/test_info/something.txt"},
+    ]
+    logs = create_log_reference(ROOT_URL, TASK_ID, 0, artifacts=artifacts)
+    assert len(logs) == 1
+    assert logs[0]["url"].endswith("artifacts/public/logs/live_backing.log")
+
+
+def test_create_log_reference_appends_raw_log_when_present():
+    artifacts = [
+        {"name": "public/logs/live_backing.log"},
+        {"name": "public/test_info/xpcshell_raw.log"},
+        {"name": "public/test_info/mochitest_raw.log"},
+    ]
+    logs = create_log_reference(ROOT_URL, TASK_ID, 0, artifacts=artifacts)
+    assert [log["name"] for log in logs] == [
+        "live_backing_log",
+        "structured_log",
+        "structured_log",
+    ]
+    urls = [log["url"] for log in logs]
+    assert urls[0].endswith("artifacts/public/logs/live_backing.log")
+    assert urls[1].endswith("artifacts/public/test_info/xpcshell_raw.log")
+    assert urls[2].endswith("artifacts/public/test_info/mochitest_raw.log")
 
 
 @pytest.mark.asyncio
diff --git a/treeherder/etl/jobs.py b/treeherder/etl/jobs.py
index 785d57cd856..caacdedcb03 100644
--- a/treeherder/etl/jobs.py
+++ b/treeherder/etl/jobs.py
@@ -344,7 +344,7 @@ def _schedule_log_parsing(job, job_logs, result, repository):
     # importing here to avoid an import loop
     from treeherder.log_parser.tasks import parse_logs
 
-    task_types = {"errorsummary_json", "live_backing_log"}
+    task_types = {"errorsummary_json", "live_backing_log", "structured_log"}
     sheriffed_repos = {
         "autoland",
         "mozilla-central",
diff --git a/treeherder/etl/taskcluster_pulse/handler.py b/treeherder/etl/taskcluster_pulse/handler.py
index 1bbc13da36c..f01321c41e3 100644
--- a/treeherder/etl/taskcluster_pulse/handler.py
+++ b/treeherder/etl/taskcluster_pulse/handler.py
@@ -56,16 +56,31 @@ def result_from_run(job_run):
         return "unknown"
 
 
-# Creates a log entry for Treeherder to retrieve and parse.  This log is
-# displayed on the Treeherder Log Viewer once parsed.
-def create_log_reference(root_url, task_id, run_id):
-    log_url = taskcluster_urls.api(
-        root_url, "queue", "v1", "task/{taskId}/runs/{runId}/artifacts/public/logs/live_backing.log"
-    ).format(taskId=task_id, runId=run_id)
-    return {
-        "name": "live_backing_log",
-        "url": log_url,
-    }
+# Creates the log entries for Treeherder to retrieve and parse. These logs
+# are displayed on the Treeherder Log Viewer once parsed.
+# `public/logs/live_backing.log` is always included. Any artifact whose name
+# ends with `_raw.log` is appended as an additional reference. All entries
+# share the `live_backing_log` JobLog name so the existing parser dispatch
+# (jobs.py:_schedule_log_parsing, log_parser/tasks.py:parser_tasks) handles
+# them; JobLog's `(job, name, url)` unique constraint allows the duplicates.
+def create_log_reference(root_url, task_id, run_id, artifacts=None):
+    def _ref(name, artifact_path):
+        return {
+            "name": name,
+            "url": taskcluster_urls.api(
+                root_url,
+                "queue",
+                "v1",
+                f"task/{{taskId}}/runs/{{runId}}/artifacts/{artifact_path}",
+            ).format(taskId=task_id, runId=run_id),
+        }
+
+    logs = [_ref("live_backing_log", "public/logs/live_backing.log")]
+    for artifact in artifacts or []:
+        name = artifact.get("name", "")
+        if name.endswith("_raw.log"):
+            logs.append(_ref("structured_log", name))
+    return logs
 
 
 # Filters the task routes for the treeherder specific route.  Once found,
@@ -371,11 +386,23 @@ async def handle_task_completed(push_info, task, message, session):
 
     job["timeStarted"] = job_run["started"]
     job["timeCompleted"] = job_run["resolved"]
-    job["logs"] = [
-        create_log_reference(message["root_url"], payload["status"]["taskId"], job_run["runId"]),
-    ]
+
+    task_id = payload["status"]["taskId"]
+    run_id = job_run["runId"]
+    try:
+        artifacts = await fetch_artifacts(message["root_url"], task_id, run_id, session)
+    except Exception:
+        logger.debug("Artifacts could not be found for task: %s run: %s", task_id, run_id)
+        artifacts = []
+
+    job["logs"] = create_log_reference(message["root_url"], task_id, run_id, artifacts=artifacts)
     job = await add_artifact_uploaded_links(
-        message["root_url"], payload["status"]["taskId"], payload["runId"], job, session
+        message["root_url"],
+        task_id,
+        payload["runId"],
+        job,
+        session,
+        artifacts=artifacts,
     )
     return job
 
@@ -434,13 +461,13 @@ async def fetch_artifacts(root_url, task_id, run_id, session):
 # fetch them in order to determine if there is an error_summary log;
 # TODO refactor this when there is a way to only retrieve the error_summary
 # artifact: https://bugzilla.mozilla.org/show_bug.cgi?id=1629716
-async def add_artifact_uploaded_links(root_url, task_id, run_id, job, session):
-    artifacts = []
-    try:
-        artifacts = await fetch_artifacts(root_url, task_id, run_id, session)
-    except Exception:
-        logger.debug("Artifacts could not be found for task: %s run: %s", task_id, run_id)
-        return job
+async def add_artifact_uploaded_links(root_url, task_id, run_id, job, session, artifacts=None):
+    if artifacts is None:
+        try:
+            artifacts = await fetch_artifacts(root_url, task_id, run_id, session)
+        except Exception:
+            logger.debug("Artifacts could not be found for task: %s run: %s", task_id, run_id)
+            return job
 
     seen = {}
     links = []
diff --git a/treeherder/log_parser/tasks.py b/treeherder/log_parser/tasks.py
index 827a2bb2e50..bfeaf0c8408 100644
--- a/treeherder/log_parser/tasks.py
+++ b/treeherder/log_parser/tasks.py
@@ -6,11 +6,13 @@
 from requests.exceptions import HTTPError
 
 from treeherder.etl.artifact import serialize_artifact_json_blobs, store_job_artifacts
+from treeherder.etl.text import astral_filter
 from treeherder.log_parser.artifactbuildercollection import (
     ArtifactBuilderCollection,
     LogSizeError,
 )
-from treeherder.model.models import Job, JobLog
+from treeherder.model.models import Job, JobLog, StructuredLogError
+from treeherder.utils.http import fetch_text
 from treeherder.workers.task import retryable_task
 
 from . import failureline, intermittents
@@ -33,6 +35,7 @@ def parse_logs(job_id, job_log_ids, priority):
     parser_tasks = {
         "errorsummary_json": store_failure_lines,
         "live_backing_log": post_log_artifacts,
+        "structured_log": post_structured_log_artifacts,
     }
 
     # We don't want to stop parsing logs for most Exceptions however we still
@@ -122,6 +125,79 @@ def post_log_artifacts(job_log):
         raise
 
 
+def post_structured_log_artifacts(job_log):
+    """Download a structured (mozlog JSON-lines) log and store error entries."""
+    logger.info("Downloading/parsing structured log for log %s", job_log.id)
+
+    try:
+        log_text = fetch_text(job_log.url)
+    except HTTPError as e:
+        job_log.update_status(JobLog.FAILED)
+        if e.response is not None and e.response.status_code in (403, 404):
+            logger.warning("Unable to retrieve structured log for %s: %s", job_log.id, e)
+            return
+        logger.error("Failed to download structured log for %s: %s", job_log.id, e)
+        raise
+    except Exception as e:
+        job_log.update_status(JobLog.FAILED)
+        logger.error("Failed to download structured log for %s: %s", job_log.id, e)
+        raise
+
+    if not log_text:
+        job_log.update_status(JobLog.PARSED)
+        return
+
+    error_entries = []
+    for raw_line in log_text.splitlines():
+        try:
+            entry = json.loads(raw_line)
+        except (ValueError, TypeError):
+            continue
+        if not isinstance(entry, dict):
+            continue
+        level = (entry.get("level") or "").upper()
+        if level not in ("ERROR", "CRITICAL"):
+            continue
+
+        time_value = entry.get("time")
+        if isinstance(time_value, float):
+            time_value = int(time_value)
+        elif not isinstance(time_value, int):
+            time_value = None
+
+        pid_value = entry.get("pid")
+        if not isinstance(pid_value, int) or pid_value < 0:
+            pid_value = None
+
+        error_entries.append(
+            StructuredLogError(
+                job_log=job_log,
+                action=str(entry.get("action") or "")[:32],
+                time=time_value,
+                thread=astral_filter(str(entry.get("thread") or ""))[:255],
+                pid=pid_value,
+                source=astral_filter(str(entry.get("source") or ""))[:255],
+                message=astral_filter(str(entry.get("message") or "")),
+                level=level[:16],
+            )
+        )
+
+    try:
+        StructuredLogError.objects.filter(job_log=job_log).delete()
+        if error_entries:
+            StructuredLogError.objects.bulk_create(error_entries)
+        job_log.update_status(JobLog.PARSED)
+        logger.info(
+            "Stored structured log errors for %s %s %s",
+            job_log.job.repository.name,
+            job_log.job.id,
+            job_log.id,
+        )
+    except Exception as e:
+        logger.error("Failed to store structured log errors for %s: %s", job_log.id, e)
+        raise
+
+
 def extract_text_log_artifacts(job_log):
     """Generate a set of artifacts by parsing from the raw text log."""
 
diff --git a/treeherder/model/migrations/0049_structuredlogerror.py b/treeherder/model/migrations/0049_structuredlogerror.py
new file mode 100644
index 00000000000..dcb7c626930
--- /dev/null
+++ b/treeherder/model/migrations/0049_structuredlogerror.py
@@ -0,0 +1,37 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("model", "0048_alter_failureline_action"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="StructuredLogError",
+            fields=[
+                ("id", models.BigAutoField(primary_key=True, serialize=False)),
+                ("action", models.CharField(blank=True, max_length=32)),
+                ("time", models.BigIntegerField(blank=True, null=True)),
+                ("thread", models.CharField(blank=True, max_length=255)),
+                ("pid", models.PositiveIntegerField(blank=True, null=True)),
+                ("source", models.CharField(blank=True, max_length=255)),
+                ("message", models.TextField(blank=True)),
+                ("level", models.CharField(blank=True, max_length=16)),
+                (
+                    "job_log",
+                    models.ForeignKey(
+                        on_delete=models.deletion.CASCADE,
+                        related_name="structured_log_error",
+                        to="model.joblog",
+                    ),
+                ),
+            ],
+            options={
+                "db_table": "structured_log_error",
+                "indexes": [
+                    models.Index(fields=["job_log"], name="structured__job_log_idx"),
+                ],
+            },
+        ),
+    ]
diff --git a/treeherder/model/models.py b/treeherder/model/models.py
index 3b2d04fc134..9eaa36c90e3 100644
--- a/treeherder/model/models.py
+++ b/treeherder/model/models.py
@@ -1324,6 +1324,29 @@ def get_failure_line(self):
             return None
 
 
+class StructuredLogError(models.Model):
+    """A detected error entry from a structured (mozlog JSON-lines) log."""
+
+    id = models.BigAutoField(primary_key=True)
+    job_log = models.ForeignKey(
+        JobLog, on_delete=models.CASCADE, related_name="structured_log_error"
+    )
+    action = models.CharField(max_length=32, blank=True)
+    time = models.BigIntegerField(null=True, blank=True)
+    thread = models.CharField(max_length=255, blank=True)
+    pid = models.PositiveIntegerField(null=True, blank=True)
+    source = models.CharField(max_length=255, blank=True)
+    message = models.TextField(blank=True)
+    level = models.CharField(max_length=16, blank=True)
+
+    class Meta:
+        db_table = "structured_log_error"
+        indexes = [models.Index(fields=["job_log"])]
+
+    def __str__(self):
+        return f"{self.id} {self.job_log_id}"
+
+
 class TextLogErrorMetadata(models.Model):
     """
     Link matching TextLogError and FailureLine instances.