API Development

Full overview

2-week training entirely dedicated to designing and deploying modern APIs. You learn to choose between REST and GraphQL, secure your endpoints (OAuth2, JWT, rate limiting), document them (OpenAPI / Swagger) and test them (unit, integration, contract testing).

APIs have become the backbone of the modern web. Every SaaS application, mobile app, or internal tool relies on well-designed APIs. This 2-week training makes you a competent, autonomous API developer, from design to production deployment.

The first week focuses on fundamentals: RESTful resource design (naming, hierarchy, filtering, pagination), appropriate HTTP status codes, API versioning, input validation with Zod. You implement OAuth2 authentication with JWT, role and permission management, and rate limiting by IP and token. The second week moves up a gear: discovering GraphQL for cases where REST isn't optimal, interactive documentation with OpenAPI/Swagger, automated testing (unit, integration, contract testing) with Vitest and Supertest, and platform deployment with CI/CD.

At the end of the training, you leave with a portfolio of 3 complete, documented, tested, and deployed APIs — ready to present to an employer or client.

Curriculum

1. 01Week 1 — REST, resource design, validation, status codes
2. 02Week 2 — Security (OAuth2, JWT), OpenAPI documentation, testing