Playwright Interview Prep The Questions That Actually Matter in 2025

Hey Dev.to! 👋

I've been prepping for Playwright interviews lately, and after going through multiple interview rounds, I noticed some patterns. Let me share what interviewers are actually asking and what you need to focus on.

Why Playwright Suddenly Matters
The Playwright automation tool has exploded in popularity this year. Companies are migrating from Selenium because of Playwright's speed, reliability, and modern architecture. If you're in QA or full-stack development, knowing Playwright isn't optional anymore—it's expected.

The Technical Deep-Dives

1. TypeScript Fundamentals Interviewers love asking about TypeScript because Playwright's TypeScript support is first-class. Expect questions on:

Type annotations vs type inference
Enums and their use cases
Optional vs default parameters
Type assertions

Real question I got: "Explain the difference between null and undefined and when each should be used."

1. Async JavaScript Mastery Understanding asynchronous code is critical. Questions include:

Callbacks vs Promises vs async/await
How JavaScript's event loop works
Handling async operations in tests

Pro tip: Be ready to explain why Playwright's auto-wait mechanism eliminates most timing issues.

1. Playwright-Specific Features This is where interviews get interesting: Authentication State Management typescript// Save auth state await context.storageState({ path: 'auth.json' });

// Reuse it
const context = await browser.newContext({
storageState: 'auth.json'
});
This pattern skips login for every test—huge time saver.
Test Organization
typescripttest.describe('User Flow', () => {
test.step('Navigate to login', async () => {
// Step logic
});
});
Interviewers ask how you structure tests for maintainability and debugging.

1. API Testing Knowledge Playwright isn't just for UI. Expect questions on:

HTTP status codes (200, 404, 500)
PUT vs PATCH differences
Path parameters vs query parameters
API mocking and network interception

1. Handling Flaky Tests "How do you handle flaky tests in Playwright?" comes up in every interview. Answer highlights:

Built-in auto-wait eliminates most flakiness
Retry configuration for transient failures
Trace viewer for debugging
Network conditions testing

typescripttest.describe.configure({ retries: 2 });
What Surprised Me
Interviewers care more about architectural thinking than syntax memorization. They want to know:

How you structure test frameworks
Your approach to parallel execution
CI/CD integration strategies
Debugging methodology

My Learning Strategy
When I decided to learn Playwright seriously, I focused on hands-on projects rather than just reading docs. Building a complete test framework taught me more than any tutorial.
For those looking to accelerate their learning, a structured Playwright course online can provide the framework knowledge and best practices that aren't obvious from documentation alone.
The Bottom Line
Playwright interviews in 2025 test your understanding of:

Modern JavaScript/TypeScript concepts
Asynchronous programming patterns
Playwright's unique features (storageState, auto-wait, test organization)
API testing fundamentals
Real-world problem-solving (flaky tests, CI/CD, parallel execution)

Don't just memorize answers. Build projects, understand the "why" behind features, and practice explaining your architectural decisions.
What Playwright interview questions have you encountered? Share below! 👇

This preparation strategy was refined through TestLeaf's comprehensive breakdown of top Playwright interview questions. Their expert insights on real-world scenarios really helped me understand what interviewers prioritize. Check out their detailed guide here - Top 20 Playwright Interview Questions and Answers for 2025.