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        "rationale": "Knowledge of major cloud and hosting vendor platforms for deploying and managing PHP applications.",
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        "display_name": "Native Mobile Languages",
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        "rationale": "Primary implementation languages used to build platform-specific app features, UI logic, and device integrations. This is the core coding surface for native mobile work on one platform.",
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        "display_name": "Pega Programming Languages \u0026 DSLs",
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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.",
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      "roles_from_db": [
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        "rationale": "Libraries, patterns, and abstractions used in application service code to map objects/entities to relational databases and encapsulate persistence access. This includes ORM frameworks, repository/DAO patterns, entity/object mapping, query composition/execution, transactions, and connection handling across Scala and Java ecosystems (for example Slick, Doobie, Quill, Hibernate, JPA, Spring Data JPA, JPQL, and Criteria-style query APIs).",
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        "difficulty_hint": "well_known",
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        "rationale": "Designing backend service interfaces and contracts that other systems consume, including endpoint and operation shape, request/response payloads, schema and validation, pagination, filtering, idempotency, versioning, status codes, and backward compatibility across REST, GraphQL, gRPC, and OpenAPI-based APIs.",
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      "input_skill": "JSON",
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        {
          "display_name": "Go Backend Developer",
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          "rationale": null,
          "role_archetype": "Engineering",
          "slug": "go-backend-developer",
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          "role_archetype": "Engineering",
          "slug": "kotlin-server-backend-developer",
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          "display_name": "Node.js Backend Developer",
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          "rationale": null,
          "role_archetype": "Engineering",
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        {
          "display_name": "PHP Backend Developer",
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          "rationale": null,
          "role_archetype": "Engineering",
          "slug": "php-backend-developer",
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        },
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