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qa Beginner 21 lessons

API Testing (Postman)

Validate backend logic without a UI. Master Postman Collections, Environments, and automated testing scripts.

API testing is faster and more reliable than UI testing. This course teaches you to use Postman effectively. You will learn to send GET, POST, PUT, and DELETE requests, inspect headers and payloads, and write JavaScript assertions to validate responses automatically. Master Collections to organize requests, Environments to switch between Dev/Prod, and Newman to run your tests in a CI/CD pipeline. Essential for testing microservices.

✅ 100% Free & Lifetime Access
⏱️ 5-Minute Lessons (Bite-sized learning)
🚀 21-Lesson Path (Independent modules)
📱 Mobile Friendly (Learn anywhere)
Backend QA
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Secure Enrollment via SSL

Complete Course Syllabus

  • 1
    REST Basics
    Understanding HTTP methods, codes, and headers.
  • 2
    Postman Fundamentals
    Creating requests, collections, and saving responses.
  • 3
    Scripting Tests
    Writing JavaScript to assert status codes and JSON.
  • 4
    Workflow Automation
    Chaining requests and passing data between them.
  • 5
    Newman CLI
    Running collections from the command line.

Estimated completion time: 21 lessons • Self-paced learning • Lifetime access

Career Outlook

Estimated Salary
$80k - $110k

Career Paths

API Tester $85k-$120k
Backend QA $90k-$130k
Integration Engineer $95k-$135k

What You Will Learn

Create and organize comprehensive API test Collections
Write automated assertions using JavaScript/Chai syntax
Manage variables and environments for dynamic testing
Run tests in CI/CD pipelines using the Newman CLI
Monitor API health and performance automatically

Skills You Will Gain

API Testing Postman REST Architecture JSON Validation CI/CD Integration

Who Is This For

Manual Testers
Backend Devs
QA Engineers

Prerequisites

None
HTTP Basics helpful

API Testing (Postman) FAQs

Coding?

Yes, basic JS for assertions and logic.

Free tool?

Yes, Postman has a generous free tier.

SOAP?

We focus on REST, but Postman supports SOAP.

Mock servers?

Yes, we cover creating mocks in Postman.

Need more info?
All Reork courses are 100% free, self-paced, and fully accessible on mobile devices. No prior experience is required. Read our full Platform FAQ.

Tech Stack & Tools

Postman
Newman
Jenkins
Swagger/OpenAPI

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