backend-developer

Q: How do I install backend-developer?

Run npx skills add https://github.com/404kidwiz/claude-supercode-skills --skill backend-developer in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/backend-developer/ (personal) or .claude/skills/backend-developer/ (project).

by 404kidwizBackend & APIs

Comprehensive backend development for building production-ready server-side applications with multiple frameworks, databases, and deployment strategies. Use when building APIs, services, databases, or server infrastructure.

Installs: 153
Last 24h: —
Trending rank: —
Security: Not audited

Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/404kidwiz/claude-supercode-skills --skill backend-developer

01
Install
Run the command in your project. The CLI asks which agents to install for.
02
Describe the task
Ask your agent for something this skill covers. It loads backend-developer automatically when relevant.
03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.

SKILL.md

The instructions your agent reads when the skill is triggered.

Backend Developer Skill

Purpose

Provides comprehensive expertise in server-side application development across multiple frameworks, languages, and deployment strategies. Specializes in building scalable APIs, database design, authentication systems, and production-ready backend infrastructure.

When to Use

Building REST or GraphQL APIs
Designing database schemas and models
Implementing authentication and authorization
Setting up server infrastructure
Creating microservices or monolithic backends
Optimizing backend performance
Deploying server applications to production
Need multi-framework backend guidance (Express, FastAPI, Django, Spring)

Quick Start

Invoke this skill when:

Building server-side APIs (REST, GraphQL) in Node.js, Python, Java, or Go
Implementing authentication/authorization (JWT, OAuth2, session-based)
Designing database schemas and ORM integration
Setting up backend testing (unit, integration, E2E)
Implementing middleware (logging, validation, error handling)
Deploying backend services to Kubernetes, AWS, GCP, or Azure
Optimizing backend performance (caching, query optimization, rate limiting)

Do NOT invoke when:

Only frontend development needed → Use frontend-developer or nextjs-developer
Database-specific optimization required → Use database-optimizer or postgres-pro
API design without implementation → Use api-designer
GraphQL-specific architecture → Use graphql-architect
DevOps/infrastructure only → Use devops-engineer or cloud-architect

Framework Support

Node.js/TypeScript

Express.js, NestJS, Koa.js, Fastify

Python

FastAPI, Django, Flask, Tornado

Java

Spring Boot, Quarkus, Micronaut

Go

Gin, Echo, Fiber

Decision Framework

Backend Framework Selection

Backend Framework Selection
├─ JavaScript/TypeScript
│   ├─ Need rapid development + type safety → NestJS
│   ├─ Need lightweight/fast performance → Fastify
│   └─ Need simplicity + ecosystem → Express.js
│
├─ Python
│   ├─ Need async + high performance → FastAPI
│   └─ Need batteries-included → Django (+ DRF)
│
├─ Java
│   └─ Enterprise-ready → Spring Boot
│
└─ Go
    └─ High-performance services → Gin or Fiber

Authentication Strategy Matrix

Scenario	Strategy	Complexity	Security
Stateless API (mobile, SPA)	JWT	Low	Medium
Third-party login	OAuth 2.0	Medium	High
Traditional web app	Session-based	Low	High
Microservices	JWT + API Gateway	High	High
Enterprise SSO	SAML 2.0	High	Very High

Database & ORM Selection

Database & ORM Decision
├─ Relational (SQL)
│   ├─ Node.js/TypeScript
│   │   ├─ Need type safety + migrations → Prisma
│   │   └─ Need flexibility → TypeORM or Sequelize
│   ├─ Python
│   │   ├─ Async required → Tortoise ORM or SQLModel
│   │   └─ Sync / Django → Django ORM or SQLAlchemy
│   └─ Java
│       └─ JPA (Hibernate) or jOOQ
│
└─ NoSQL
    ├─ Document store → MongoDB (Mongoose for Node.js)
    └─ Key-value → Redis (caching, sessions)

Best Practices

Always validate input - Use provided validation middleware
Handle errors gracefully - Use generated error handlers
Write tests - Use test templates for consistency
Use environment variables - Never hardcode secrets
Implement logging - Use provided logging configuration
Monitor performance - Set up metrics and alerts
Security first - Use provided authentication setup
Version your API - Follow versioning patterns
Document your code - Generate API docs automatically
Deploy safely - Use provided deployment scripts

Common Patterns

Repository Pattern

Separation of concerns
Easy testing
Swappable implementations

Service Layer

Centralized business rules
Transaction management
Error handling

Middleware Stack

Authentication
Authorization
Validation
Logging
Error handling

Troubleshooting

Common Issues

Database connection errors

Check connection string
Verify database is running
Check network connectivity
Review connection pool settings

Authentication failures

Verify JWT secret
Check token expiration
Validate token format
Review middleware order

Build failures

Check TypeScript configuration
Verify dependencies are installed
Review error messages
Check for syntax errors

Deployment issues

Verify Docker image builds
Check Kubernetes pods
Review logs
Verify environment variables

Quality Checklist

Security

Input validation on all endpoints (Zod/Joi)
Password hashing (bcrypt cost 10+ or Argon2)
SQL injection prevention (parameterized queries)
Rate limiting on auth endpoints
Security headers (Helmet.js)
Environment variables for secrets

Authentication & Authorization

Strong JWT secret (256-bit)
Short-lived access tokens (15min)
Refresh token rotation
Authorization checks on protected routes

Error Handling

Global error handler
Async error handling (express-async-errors)
Clear validation error messages
404 handling for unknown endpoints

Performance

Database connection pooling
Query optimization (no N+1)
Caching (Redis for sessions, rate limiting)
Response compression (gzip/brotli)

Testing

Unit tests for services/repositories
Integration tests for API endpoints
>80% coverage for critical paths
Separate test database

Additional Resources

Detailed Technical Reference: See REFERENCE.md
Code Examples & Patterns: See EXAMPLES.md

FAQ

What does the backend-developer skill do?

How do I install backend-developer?

Run npx skills add https://github.com/404kidwiz/claude-supercode-skills --skill backend-developer in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/backend-developer/ (personal) or .claude/skills/backend-developer/ (project).

Which AI agents can use backend-developer?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is backend-developer safe to install?

No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.

Who maintains backend-developer?

It is published by 404kidwiz in 404kidwiz/claude-supercode-skills. It has 153 recorded installs.