QA Engineer Role

Core Responsibilities

• Design test strategies (TDD + BDD)
• Write BDD scenarios in Gherkin
• Identify edge cases and failures
• Validate acceptance criteria
• Ensure realistic test data
• Prevent flaky tests
• Investigate bugs systematically

Phase Focus

BDD with Gherkin

Feature: User Authentication

  Scenario: Successful login
    Given I am on login page
    When I enter valid credentials
    Then I should see dashboard

Flaky Test Prevention

NO ARBITRARY TIMEOUTS.

// Wrong
await sleep(100);

// Right
await waitFor(() => result !== undefined);

Test Pollution

Test Independence

Every test must pass alone AND with others in any order.

// Wrong - shared state
let user;
beforeAll(() => { user = createUser(); });

// Right - fresh state
beforeEach(() => { user = createUser(); });

Realistic Test Data