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        "rationale": "Languages used to implement data pipelines, transformations, and operational glue. This is the primary coding surface for building ingestion, enrichment, and automation logic in data engineering.",
        "slug": "programming-languages-for-data-work",
        "source": "db"
      },
      "input_skill": "Python",
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        }
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    },
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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.",
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        "source": "db"
      },
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        {
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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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    },
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        "rationale": "Languages used to implement shared mobile features across iOS and Android from a common codebase. This is the primary coding surface for hybrid app logic, UI behavior, and platform-specific branching.",
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        "source": "db"
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      "input_skill": "TypeScript",
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      ]
    },
    {
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        "rationale": "Primary implementation languages for browser client code, UI logic, and shared frontend utilities. These languages are the main coding surface for building interactive web experiences in this role.",
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        }
      ]
    },
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        {
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    },
    {
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        "display_name": "Meta-Frameworks \u0026 SSR",
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        "rationale": "Frameworks that build on UI libraries to provide routing, server-side rendering, and static site generation.",
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        "source": "db"
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          "role_archetype": null,
          "slug": "frontend-engineer",
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        }
      ]
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        "rationale": "Component frameworks and rendering models used to build browser screens, reusable UI, and interactive client flows. This is a core cluster because frontend engineers spend much of their time composing and updating view hierarchies.",
        "slug": "ui-frameworks-and-rendering",
        "source": "db"
      },
      "input_skill": "Next.js",
      "llm_role": null,
      "roles_from_db": [
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          "role_archetype": null,
          "slug": "frontend-engineer",
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        {
          "display_name": "Full Stack Engineer",
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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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        "rationale": "Operational stack for building, serving, evaluating, and orchestrating LLM-based systems. This includes vector retrieval, prompt workflows, LLM serving, and observability for generative applications.",
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      "input_skill": "LangChain",
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      "roles_from_db": [
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          "slug": "ai-engineer",
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        },
        {
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          "slug": "ml-engineer",
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        "source": "db"
      },
      "input_skill": "LlamaIndex",
      "llm_role": null,
      "roles_from_db": [
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          "display_name": "AI Engineer",
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          "slug": "ai-engineer",
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        {
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          "slug": "ml-engineer",
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        },
        {
          "display_name": "ML Ops Engineer",
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          "rationale": null,
          "role_archetype": null,
          "slug": "ml-ops-engineer",
          "source": "db"
        }
      ]
    },
    {
      "dimension": {
        "difficulty_hint": "well_known",
        "display_name": "LLM Provider APIs",
        "id": 195,
        "rationale": "Direct integration with hosted model APIs used to generate, classify, extract, and transform content. This is the primary vendor surface for shipping AI features because it determines model choice, request shape, streaming, tool use, and cost/latency tradeoffs.",
        "slug": "llm-provider-apis",
        "source": "db"
      },
      "input_skill": "OpenAI API",
      "llm_role": null,
      "roles_from_db": [
        {
          "display_name": "AI Engineer",
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          "rationale": null,
          "role_archetype": null,
          "slug": "ai-engineer",
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      ]
    },
    {
      "dimension": {
        "difficulty_hint": "well_known",
        "display_name": "React Frontend Development",
        "id": 96,
        "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.",
        "slug": "d_init_01",
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      "input_skill": "RAG",
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      "roles_from_db": []
    },
    {
      "dimension": {
        "difficulty_hint": "well_known",
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        "rationale": "Operational stack for building, serving, evaluating, and orchestrating LLM-based systems. This includes vector retrieval, prompt workflows, LLM serving, and observability for generative applications.",
        "slug": "llm-operations-and-orchestration",
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      },
      "input_skill": "Pinecone",
      "llm_role": null,
      "roles_from_db": [
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          "slug": "ai-engineer",
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        {
          "display_name": "ML Ops Engineer",
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      ]
    },
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        "rationale": "Specialized storage and indexing systems used to persist embeddings and support similarity search. This is a distinct vendor-family cluster because AI features often depend on a concrete vector store choice and its operational behavior.",
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        "source": "db"
      },
      "input_skill": "Pinecone",
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      "roles_from_db": [
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          "slug": "ai-engineer",
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        }
      ]
    },
    {
      "dimension": {
        "difficulty_hint": "well_known",
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        "rationale": "Specialized storage and indexing systems used to persist embeddings and support similarity search. This is a distinct vendor-family cluster because AI features often depend on a concrete vector store choice and its operational behavior.",
        "slug": "vector-databases",
        "source": "db"
      },
      "input_skill": "Weaviate",
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      "roles_from_db": [
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          "display_name": "AI Engineer",
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          "role_archetype": null,
          "slug": "ai-engineer",
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        }
      ]
    },
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        "rationale": "Underlying cloud providers that host the managed services or infrastructure used by the role, such as AWS, Azure, and GCP.",
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        "source": "db"
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      "input_skill": "Distributed Systems",
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          "display_name": "DevOps Engineer",
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        {
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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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    },
    {
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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.",
        "slug": "d_init_01",
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    },
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        "difficulty_hint": "well_known",
        "display_name": "API Integration and Data Fetching",
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        "rationale": "Client-side integration with backend endpoints and third-party services, including request shaping, response handling, and synchronization with UI state. This is central to frontend work because most screens depend on remote data.",
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      "input_skill": "Claude API",
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          "slug": "frontend-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.",
        "slug": "d_init_01",
        "source": "db"
      },
      "input_skill": "Gemini API",
      "llm_role": null,
      "roles_from_db": []
    },
    {
      "dimension": {
        "difficulty_hint": "well_known",
        "display_name": "LLM Serving \u0026 Deployment",
        "id": 209,
        "rationale": "Tools and frameworks for hosting and serving LLM models in production environments.",
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        "source": "db"
      },
      "input_skill": "LLMOps",
      "llm_role": null,
      "roles_from_db": [
        {
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