{
    "as_of": "2026-05-03T10:19:36+00:00",
    "corpus_total": 278,
    "company_filter": "Canonical",
    "summary": {
        "unique_role_keys": 271,
        "clustered_role_keys": 6,
        "total_reposts": 7,
        "repost_pct": 2.5,
        "tier_breakdown": {
            "duplicate": 5,
            "persistent": 1,
            "chronic": 0
        }
    },
    "top_clusters": [
        {
            "title": "Project Manager - Ubuntu Embedded Systems",
            "company": "canonical",
            "count": 3,
            "first_seen": "2026-04-01T10:33:02+00:00",
            "last_seen": "2026-04-01T10:35:42+00:00",
            "tier": "persistent"
        },
        {
            "title": "Linux Enablement - Software Engineering Manager",
            "company": "canonical",
            "count": 2,
            "first_seen": "2026-03-31T17:18:20+00:00",
            "last_seen": "2026-03-31T17:18:49+00:00",
            "tier": "duplicate"
        },
        {
            "title": "Sales Development Representative",
            "company": "canonical",
            "count": 2,
            "first_seen": "2026-04-01T12:40:02+00:00",
            "last_seen": "2026-04-01T12:41:33+00:00",
            "tier": "duplicate"
        },
        {
            "title": "Senior Product Marketing Manager ",
            "company": "canonical",
            "count": 2,
            "first_seen": "2026-04-13T16:58:17+00:00",
            "last_seen": "2026-04-13T16:58:17+00:00",
            "tier": "duplicate"
        },
        {
            "title": "Senior Ubuntu Embedded IoT System Engineer",
            "company": "canonical",
            "count": 2,
            "first_seen": "2026-03-31T17:09:00+00:00",
            "last_seen": "2026-03-31T17:09:00+00:00",
            "tier": "duplicate"
        },
        {
            "title": "Ubuntu Enablement Engineer",
            "company": "canonical",
            "count": 2,
            "first_seen": "2026-03-31T17:18:50+00:00",
            "last_seen": "2026-03-31T17:18:52+00:00",
            "tier": "duplicate"
        }
    ],
    "docs": "https://remnavi.com/editorial/ghost-jobs/",
    "methodology_note": "Clusters are jobs sharing a normalised (title, company) key. A cluster of N listings counts (N-1) as reposts. This is an observation, not a verdict \u2014 some duplicates are legitimate cross-team or cross-region postings of the same role."
}