The Backend Developer trek
APIs, databases, auth, caching, queues, and the architecture skills that power every product. Language-agnostic principles with Node.js and Python examples.
Web fundamentals & HTTP
HTTP is the backbone of the web. Understand it deeply before writing a single endpoint.
Choose your language
Node.js (TypeScript) or Python. Both paths converge on the same backend concepts — pick one and go deep.
Databases & SQL
Relational databases are the default backend storage. Understand them deeply before reaching for NoSQL.
REST API design & frameworks
Building clean, versioned, documented REST APIs with a real web framework and proper error handling.
Authentication & authorization
Sessions, JWTs, OAuth 2.0, RBAC, and the security patterns that keep your users' data safe.
Caching strategies
Redis, in-process caching, CDN caching, and the invalidation strategies that make backend services fast without serving stale data.
Message queues & async processing
BullMQ, RabbitMQ, and Kafka. Decouple producers from consumers, handle backpressure, and build resilient async workflows.
Microservices & API design patterns
When to split services, how to communicate between them (REST, gRPC, events), and the distributed systems problems you inherit when you do.
Testing backend systems
Unit tests, integration tests, contract tests, load tests — and the pyramid that tells you how many of each to write.
Observability & logging
Structured logging, distributed tracing, metrics, and the dashboards that tell you what your service is doing in production.
Docker & cloud deployment
Containerize backend services and deploy them to a real cloud environment with zero manual steps.
Security best practices
Input validation, parameterized queries, secrets management, dependency auditing, and the OWASP patterns every backend developer must know.
Capstone — production backend service
Design, build, deploy, and document a complete backend service. Real load, real observability, real security posture.
Trek complete. What's next?
You've walked the full roadmap. Now ship the capstone, write about it, and share the path with the next engineer who needs it.