backend-dev

Build a production-ready backend API using contract-first design to define versioned endpoints, schemas, and validation rules before implementation. Layer your architecture into API, service, repository, and middleware components to ensure maintainability, explicit types, and validated inputs.

Contract-first API design defines versioned endpoints, response envelopes, schemas, validation rules, and error handling before writing server-side code. You need this approach to prevent fragile backend implementations and ensure maintainable, reliable service integrations.

Handle failures in server-side code by implementing timeouts, retries, idempotency, and database transactions. Enforce security controls through robust authentication, authorization, configuration validation, and structured logging to achieve reliable backend operations.

Yes, this backend development approach applies to server-side code across languages and frameworks. It focuses on universal production-ready practices including layered architecture, database migrations, comprehensive testing, and observability rather than specific language syntax.

Structure database architecture and business logic using clear repository and model layers separated from service components. Validate configuration, handle migrations explicitly, and wrap data access in transactions to ensure your backend remains maintainable and observable.

Plan comprehensive backend tests by covering unit and integration scenarios including happy paths, invalid inputs, dependency failures, edge cases, and critical workflows. Validate authentication, business logic, and database transactions within your test suite.