Fullstack Expert (2026 Polyglot & Systems Edition)

English | Bahasa Indonesia

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English

Orchestration & Integration

Connects and orchestrates with domain skills:

• Frontend & Fullstack DX: senior-frontend, nextjs-app-router-expert, design-system-architect, and monorepo-architect for shared workspace types and end-to-end type safety.
• Polyglot Backends: js-backend-expert, python-programming-expert, go-programming-expert, and rust-programming-expert for heterogeneous microservices and high-throughput pipelines.
• Contracts & APIs: api-design-expert, openapi-swagger-codegen-expert, spec-driven-development-expert, and graphql-apollo-expert.
• Database & State: database-orm-expert (Prisma/Drizzle/SQLx) and vector-db-rag-expert (pgvector).
• Quality & Anti-Slop: anti-slop, autonomous-tdd-debugger, and e2e-testing-expert.
• Master Orchestrator: brainstorming and zero-to-prod-orchestrator.

Description

Expert-level fullstack development across multiple languages and frameworks. Focuses on polyglot backend architectures, system design patterns (Event-Driven Saga, CQRS), API contracts (OpenAPI 3.1, gRPC), and monorepo shared types.

Trigger Conditions

• Choosing the right language and framework for a multi-service architecture.
• Designing API contracts (REST, gRPC, Hono RPC) between heterogeneous services.
• Implementing distributed system design patterns (Saga, CQRS).
• Setting up a polyglot monorepo with shared types across frontend and backend.

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2026 Polyglot Architecture Matrix

For comprehensive frontend UI architecture, see senior-frontend and nextjs-app-router-expert. For dedicated AI agent workflows and LLM integrations, see ai-llm-integration-expert and multi-agent-orchestration.

Language	Primary Frameworks	Ideal Workloads
TypeScript	Hono, Fastify 5, NestJS	Serverless, Edge APIs, type-safe RPC
Python	FastAPI 0.115+, Django 5	Data science, LLM orchestration, async queues
Go	net/http (Go 1.25+), Gin, Echo	Ultra-high throughput microservices, networking, CLIs
Rust	Axum 0.8, Actix-web 4	High-performance compute, memory safety, WASM

Infrastructure & Multi-Service Storage

• Primary OLTP: PostgreSQL with connection pooling (PgBouncer / Supavisor).
• Analytics OLAP: ClickHouse / DuckDB for high-speed aggregations.
• Cache & Ephemeral State: Redis / Upstash with TTL.
• Vector Search: pgvector or Qdrant for semantic search.

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API Design Standards

REST — OpenAPI 3.1

openapi: "3.1.0"
info:
  title: "SaaS Multi-Service API"
  version: "1.0.0"
paths:
  /api/v1/workspaces/{id}:
    get:
      summary: "Get workspace by ID"
      parameters:
        - name: id
          in: path
          required: true
          schema: { type: string, format: uuid }
      responses:
        "200":
          content:
            application/json:
              schema: { $ref: "#/components/schemas/Workspace" }
        "404":
          content:
            application/json:
              schema: { $ref: "#/components/schemas/ProblemDetail" }

gRPC — Protocol Buffers (proto3)

syntax = "proto3";
package user.v1;

service UserService {
  rpc GetUser (GetUserRequest) returns (User);
  rpc ListUsers (ListUsersRequest) returns (stream User);
  rpc CreateUser (CreateUserRequest) returns (User);
}

message User {
  string id = 1;
  string email = 2;
  string name = 3;
  repeated string workspace_ids = 4;
}

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Microservice Patterns

Event-Driven (Saga Pattern with Compensations)

Order Service ──publishes──> "order.created" ──> Payment Service
                                                      │
                                               ┌──────┴──────┐
                                          success?       failure?
                                               │               │
                                    "payment.succeeded"  "payment.failed"
                                               │               │
                                       Inventory Service  Order Service
                                       (reserve stock)    (cancel order)

CQRS (Command Query Responsibility Segregation)

• Write side: Commands validate and update the primary relational database.
• Read side: Events project into read-optimized denormalized views or ClickHouse tables for high-frequency queries.

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AI-Native Backend Integration

import { generateObject } from 'ai';
import { anthropic } from '@ai-sdk/anthropic';
import { z } from 'zod';

app.post('/api/analyze', async (c) => {
  const { content } = await c.req.json();
  const { object } = await generateObject({
    model: anthropic('claude-3-7-sonnet-20250219'),
    schema: z.object({
      sentiment: z.enum(['positive', 'neutral', 'negative']),
      topics: z.array(z.string()),
      summary: z.string().max(200),
    }),
    prompt: `Analyze: ${content}`,
  });
  return c.json(object);
});

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Monorepo with Shared Types

// packages/types/src/index.ts — single source of truth
export interface User {
  id: string;
  email: string;
  name: string;
  plan: 'free' | 'pro' | 'enterprise';
  isSuperAdmin: boolean;
}

Production Security Checklist

• User inputs validated with Zod / Pydantic on the server.
• Parameterized queries enforced across all database layers.
• Rate limiting on all public endpoints (rate-limit-abuse-prevention).
• Super Admin routes strictly isolated to dedicated subdomain.

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Bahasa Indonesia

Integrasi Orkestrasi

Terhubung dan mengorkestrasi bersama skill domain:

• Frontend & Fullstack DX: senior-frontend, nextjs-app-router-expert, design-system-architect, dan monorepo-architect untuk tipe data bersama monorepo dan keamanan tipe end-to-end.
• Backend Polyglot: js-backend-expert, python-programming-expert, go-programming-expert, dan rust-programming-expert untuk microservices heterogen dan pipeline komputasi tinggi.
• Kontrak & API: api-design-expert, openapi-swagger-codegen-expert, spec-driven-development-expert, dan graphql-apollo-expert.
• Database & State: database-orm-expert (Prisma/Drizzle/SQLx) dan vector-db-rag-expert (pgvector).
• Kualitas & Anti-Slop: anti-slop, autonomous-tdd-debugger, dan e2e-testing-expert.
• Orkestrator Utama: brainstorming dan zero-to-prod-orchestrator.

Deskripsi

Panduan pengembangan fullstack tingkat ahli lintas bahasa pemrograman dan framework. Berfokus pada arsitektur backend polyglot, pola desain sistem terdistribusi (Event-Driven Saga, CQRS), kontrak antarmuka API (OpenAPI 3.1, gRPC), dan monorepo dengan type sharing terpadu.

Kondisi Pemicu

• Memilih bahasa dan framework yang tepat untuk arsitektur multi-service (TypeScript, Python, Go, Rust).
• Merancang kontrak API (REST, gRPC, Hono RPC) antar-layanan heterogen.
• Mengimplementasikan pola arsitektur terdistribusi (Saga dengan rollback kompensasi, CQRS).
• Menyiapkan monorepo polyglot dengan tipe data yang dibagikan antara frontend dan backend.

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Matriks Arsitektur Polyglot 2026

Bahasa	Framework Utama	Kasus Penggunaan Ideal
TypeScript	Hono, Fastify 5, NestJS	Edge APIs, Serverless, RPC type-safe end-to-end
Python	FastAPI 0.115+, Pydantic AI	Pipeline data, orkestrasi LLM, antrean tugas ML
Go	net/http (Go 1.25+), Gin, Echo	Microservice throughput ultra-tinggi, networking, CLI tools
Rust	Axum 0.8, Actix-web	Komputasi performa kritis, keamanan memori, WASM

Infrastruktur & Database Multi-Service

• OLTP Primer: PostgreSQL dengan connection pooling (PgBouncer / Supavisor).
• OLAP Analitik: ClickHouse / DuckDB untuk agregasi metrik berkecepatan tinggi.
• Cache & State Ephemeral: Redis / Upstash dengan TTL ketat.
• Pencarian Vektor: pgvector (HNSW) atau Qdrant untuk penelusuran semantik.

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Implementasi Pola Kunci (TypeScript & OpenAPI 3.1)

1. Kontrak OpenAPI 3.1 untuk Layanan SaaS

openapi: "3.1.0"
info:
  title: "API Multi-Layanan SaaS"
  version: "1.0.0"
paths:
  /api/v1/workspaces/{id}:
    get:
      summary: "Mengambil data workspace berdasarkan ID"
      parameters:
        - name: id
          in: path
          required: true
          schema: { type: string, format: uuid }
      responses:
        "200":
          content:
            application/json:
              schema: { $ref: "#/components/schemas/Workspace" }

2. Definisi Kontrak gRPC Protocol Buffers (proto3)

syntax = "proto3";
package user.v1;

service LayananPengguna {
  rpc DapatkanPengguna (PermintaanPengguna) returns (Pengguna);
  rpc BuatPengguna (PermintaanBuatPengguna) returns (Pengguna);
}

message Pengguna {
  string id = 1;
  string email = 2;
  string nama = 3;
}

3. Tipe Bersama Monorepo (packages/types/src/index.ts)

export interface ProfilPengguna {
  id: string;
  email: string;
  nama: string;
  paketLangganan: 'gratis' | 'pro' | 'enterprise';
  isSuperAdmin: boolean;
}