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    {
      "skill": "Hive",
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    {
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    {
      "skill": "Big Data",
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    {
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    {
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        "roles_from_db": [
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            "slug": "full-stack-engineer",
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          {
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            "rationale": null,
            "role_archetype": "Engineering",
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          "source": "db"
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        "outcome_line": "Existing dimension (library) \u00b7 Role\u2194dimension skipped (dimension not under chosen role)",
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        "roles_from_db": [
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            "display_name": "Cyber Security Engineer",
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        ],
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        "skipped_reason": null
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          "display_name": "Programming Languages for ML Systems",
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          "rationale": "Languages used to build training code, inference services, evaluation jobs, and ML glue code. This is the primary implementation surface for ML engineers across experimentation and productionization.",
          "slug": "programming-languages-for-ml-systems",
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        "outcome_line": "Existing dimension (library) \u00b7 Role\u2194dimension skipped (dimension not under chosen role)",
        "role_dimension_saved": false,
        "roles_from_db": [
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            "slug": "ml-ops-engineer",
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        "roles_from_db": [
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        "dimension": {
          "difficulty_hint": "well_known",
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        "outcome_line": "Existing dimension (library) \u00b7 Role\u2194dimension skipped (dimension not under chosen role)",
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            "slug": "ml-ops-engineer",
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          "rationale": "Asynchronous communication patterns and broker technologies used to decouple backend services and move work off the request path. Includes queues, pub/sub, event streams, consumer groups, dead-letter queues, and delivery semantics across systems such as Kafka, RabbitMQ, NATS, SQS/SNS, Pulsar, and ActiveMQ.",
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            "display_name": "Node.js Backend Developer",
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            "role_archetype": "Engineering",
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            "slug": "android-engineer",
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            "rationale": null,
            "role_archetype": "Engineering",
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            "display_name": "Hybrid Mobile Developer",
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            "rationale": null,
            "role_archetype": null,
            "slug": "hybrid-mobile-developer",
            "source": "db"
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            "display_name": "Native Mobile Developer",
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            "rationale": null,
            "role_archetype": "Engineering",
            "slug": "native-mobile-developer",
            "source": "db"
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            "display_name": "React Native Developer",
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            "source": "db"
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            "display_name": "iOS Developer",
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            "slug": "ios-engineer",
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          "rationale": "Building interactive web user interfaces with React.js, including component composition, state management, hooks, and rendering patterns. React.js belongs here because it is a core library for client-side UI development in modern web applications.",
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        "input_skill": "Agile",
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        "outcome_line": "Existing dimension (library) \u00b7 Role\u2194dimension skipped (dimension not under chosen role)",
        "role_dimension_saved": false,
        "roles_from_db": [],
        "skill_dimension_saved": true,
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