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Guide for Backend Developers (2026 Edition)

A comprehensive guide for backend developers focusing on TypeScript and JavaScript ecosystems. Updated for 2026 with modern technologies, frameworks, and best practices.

Backend development skills


Table of Contents


JavaScript/TypeScript Runtimes

The backend JavaScript ecosystem has evolved significantly. Here are the main runtimes you should know:

Node.js (Essential)

The original and most mature JavaScript runtime. Still the industry standard for production applications.

Bun (Recommended)

A modern JavaScript runtime built for speed. Bun is a drop-in replacement for Node.js with significantly faster startup times and native TypeScript support.

Deno (Optional)

A secure runtime for JavaScript and TypeScript with built-in tooling.

  • Official Documentation
  • Secure by default (explicit permissions for file, network, and environment access)
  • Native TypeScript support
  • Web-standard APIs

Core Backend Courses

Backend development encompasses server-side logic, databases, APIs, authentication, and infrastructure management.

TypeScript Fundamentals

TypeScript is essential for modern backend development. It provides type safety, better tooling, and improved maintainability.

Node.js & Express

The foundational stack for backend JavaScript development.

Fastify (Modern Alternative to Express)

A high-performance web framework for Node.js with excellent TypeScript support.

  • Official Documentation
  • Built-in schema validation and serialization
  • Plugin architecture for modularity
  • Significantly faster than Express

Frameworks & Libraries

NestJS (Highly Recommended)

Enterprise-grade Node.js framework with excellent architecture patterns.

  • NestJS Zero to Hero - Complete course for beginners
  • Official Documentation
  • Built-in support for microservices, GraphQL, WebSockets
  • Modular architecture with dependency injection
  • First-class TypeScript support

Hono (Lightweight & Fast)

Ultra-fast web framework that works across multiple runtimes (Bun, Deno, Node.js, Cloudflare Workers).

  • Official Documentation
  • Runs on edge computing platforms
  • Small bundle size with great performance
  • TypeScript-first design

Elysia (For Bun)

End-to-end type-safe framework optimized for Bun.

  • Official Documentation
  • Excellent developer experience with type inference
  • Built-in validation with TypeBox
  • Unified API for REST and GraphQL

Databases & ORMs

Prisma (Recommended ORM)

Modern database toolkit with excellent TypeScript integration.

  • Official Documentation
  • Prisma Course - Complete Prisma ORM course
  • Auto-generated types from your database schema
  • Supports PostgreSQL, MySQL, SQLite, MongoDB, SQL Server, CockroachDB
  • Prisma Studio for visual database management

Drizzle ORM (Lightweight Alternative)

TypeScript ORM with SQL-like syntax and zero dependencies.

  • Official Documentation
  • Lightweight with excellent performance
  • SQL-like query builder
  • Great for edge computing

PostgreSQL (Recommended Database)

The most advanced open-source relational database.

MongoDB (Document Database)

Redis (Caching & Real-time)

  • Official Documentation
  • Essential for caching, sessions, rate limiting
  • Pub/Sub for real-time features
  • Use as message broker for microservices

API Development

REST API Design

GraphQL

tRPC (Type-Safe APIs)

End-to-end typesafe APIs without code generation.

  • Official Documentation
  • Full-stack TypeScript type safety
  • Works great with Next.js, React, and other frontend frameworks
  • No code generation or schemas needed

gRPC (High-Performance RPC)


Architecture & Design Patterns

Design Patterns

Microservices Architecture

  • Microservices with Node.js and React - Comprehensive microservices course
  • Event-driven architecture with message queues
  • Service discovery and API gateways
  • Tools: RabbitMQ, Apache Kafka, NATS

Domain-Driven Design (DDD)

  • Essential for complex business domains
  • Bounded contexts and aggregates
  • Event Sourcing and CQRS patterns

DevOps & Cloud

Docker (Essential)

Containerization is mandatory for modern backend development.

Kubernetes (Advanced)

Container orchestration for production workloads.

Cloud Platforms

Choose at least one major cloud provider:

  • AWS - Most comprehensive, industry leader
  • Google Cloud Platform - Excellent for containers and AI/ML
  • Azure - Great for enterprise and .NET integration

Serverless & Edge Computing

  • AWS Lambda, Google Cloud Functions, Azure Functions
  • Cloudflare Workers, Vercel Edge Functions, Deno Deploy
  • Ideal for event-driven workloads and global distribution

Infrastructure as Code

  • Terraform - Multi-cloud infrastructure management
  • Pulumi - Infrastructure as code using TypeScript
  • AWS CDK - Cloud Development Kit for AWS

Testing & Quality

Testing Frameworks

  • Vitest (Recommended) - Fast, ESM-native test runner with excellent TypeScript support
  • Jest - Feature-rich testing framework
  • Playwright - End-to-end testing for APIs and web applications

Testing Strategies

  • Unit tests for business logic
  • Integration tests for API endpoints
  • Contract testing for microservices (Pact)
  • Load testing with k6 or Artillery

Code Quality

  • ESLint with TypeScript rules
  • Prettier for formatting
  • Husky for Git hooks
  • SonarQube for code analysis

Security

Essential Security Practices

  • Input validation and sanitization
  • SQL injection prevention (use parameterized queries/ORMs)
  • XSS and CSRF protection
  • Rate limiting and DDoS protection
  • Secure headers with Helmet.js

Authentication & Authorization

  • JWT tokens with proper expiration
  • OAuth 2.0 and OpenID Connect
  • Session management best practices
  • Tools: Passport.js, Auth.js, Clerk, Auth0

Secrets Management

  • Never commit secrets to version control
  • Use environment variables or secret managers
  • Tools: HashiCorp Vault, AWS Secrets Manager, Doppler

AI Integration for Backend

AI capabilities are becoming essential for modern backend systems.

LLM Integration

  • OpenAI API, Anthropic Claude API, Google Gemini API
  • Vercel AI SDK - Unified interface for AI providers
  • LangChain.js - Framework for LLM applications

Vector Databases

For semantic search and RAG applications:

  • Pinecone, Weaviate, Qdrant, Milvus
  • PostgreSQL with pgvector extension

AI-Assisted Development

  • GitHub Copilot for code completion
  • Claude Code for autonomous coding tasks
  • AI-powered code review and testing

Books

Essential Reading

Advanced Topics


Development Tools

IDE

Visual Studio Code remains the most popular IDE for JavaScript/TypeScript development.

Essential extensions:

  • ESLint
  • Prettier
  • GitLens
  • Thunder Client (API testing)
  • Docker
  • GitHub Copilot

Alternative IDEs

  • Cursor - AI-first code editor built on VSCode
  • Zed - High-performance editor written in Rust
  • WebStorm - Full-featured IDE from JetBrains

API Development Tools

  • Postman - API testing and documentation
  • Bruno - Open-source API client (Git-friendly)
  • Insomnia - REST and GraphQL client

Database Tools


Essential Repositories

Repository Description
Node.js Best Practices 100+ best practices for Node.js development
JavaScript Algorithms Algorithms and data structures in JavaScript
System Design Primer Learn system design for large-scale applications
Awesome Node.js Curated list of Node.js packages and resources
TypeScript Style Guide Comprehensive TypeScript documentation
Backend Developer Roadmap Interactive roadmap for backend development

Communities & Learning Platforms

Online Communities

Learning Platforms

Newsletters & Blogs


Quick Start Checklist for 2026

If you're starting your backend journey, follow this path:

  1. Master TypeScript - Non-negotiable for modern backend development
  2. Learn Node.js fundamentals - Understanding the event loop, modules, and async patterns
  3. Build REST APIs - Express or Fastify for traditional REST
  4. Choose a framework - NestJS for enterprise, Hono for lightweight
  5. Database skills - PostgreSQL + Prisma is the recommended stack
  6. Containerization - Docker is mandatory
  7. Version control - Git and GitHub workflows
  8. Testing - Vitest for unit tests, Playwright for e2e
  9. Cloud basics - Deploy to at least one cloud provider
  10. Keep learning - AI integration and system design

This guide was created and maintained by David Bujosa

Last updated: January 2026

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This is a guide for backend developers with these languages: Typescript and Javascript. Plus some recommended design patterns and books.

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