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senior-backend - Backend system design, API scaffolding, database optimization, and security hardening

Designs and implements backend systems including REST APIs, microservices, database architectures, authentication flows, and security hardening.

Tags

Updated: 2026-06-30
backend developmentAPI designREST APIdatabase optimizationsecurity hardeningload testingmicroservicesOpenAPI

Capabilities

Generate API route handlersGenerate validation middlewareGenerate OpenAPI specificationsAnalyze database schemas

Typical Inputs

OpenAPI specification fileDatabase connection stringDatabase schema files

Typical Outputs

Route handler source filesValidation middleware source filesTypeScript type definitions

What this skill does

  • Generate API route handlers
  • Generate validation middleware
  • Generate OpenAPI specifications
  • Analyze database schemas
  • Generate database migration files
  • Generate schema diff reports
  • Suggest database index optimizations
  • Perform HTTP load testing
  • Generate performance reports
  • Compare API endpoint performance

Inputs

  • OpenAPI specification file
  • Database connection string
  • Database schema files
  • API endpoint URL
  • Load test configuration
  • Existing route handler files

Outputs

  • Route handler source files
  • Validation middleware source files
  • TypeScript type definitions
  • OpenAPI specification files
  • Database migration files
  • Schema diff reports
  • Database optimization suggestions
  • API performance reports

Requirements

  • Python runtime environment
  • Node.js with Express, Fastify, or Koa framework
  • PostgreSQL database access
  • Database connection credentials

Source

  • Spec: SKILL.md

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