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TCS · QA Automation Tester

TCS QA Automation Tester Interview Questions (2026): process, questions and answers

Updated 23 October 2026 · prep guide

The TCS QA Automation Tester interview usually focuses on test design, Selenium, Playwright, API testing, frameworks and CI integration. Use this page to review typical questions, practice concise answers and follow a focused 48‑hour preparation plan.

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How the TCS QA Automation Tester interview usually works

  1. application screen: HR often reviews your resume and a short questionnaire to confirm basic skills.
  2. technical round: A senior tester or architect usually asks coding, tool and scenario questions.
  3. managerial round: The hiring manager often explores your project experience and fit with the team.
  4. HR round: An HR representative typically checks your communication, expectations and cultural alignment.

Technical questions and answers

How do you locate an element with Selenium that has dynamic IDs?

When IDs change each run, locate the element by a stable attribute such as name, class or data test id. Use a relative XPath like //button[contains(@class,'submit')] or a CSS selector with a partial attribute: css=button[data-test-id*='login']. Avoid absolute paths and store the locator in a page object so it can be updated in one place. This keeps the script stable despite ID variations.

What is the difference between implicit and explicit waits in Selenium?

An implicit wait tells Selenium to poll the DOM for a set time when any element is not immediately found, applying globally. An explicit wait targets a specific condition, such as visibility of a particular element, and is applied only where needed. Implicit waits can hide timing issues, while explicit waits give finer control and reduce unnecessary delays, leading to more reliable scripts.

How do you handle multiple browser windows or tabs in Selenium?

First capture the current window handle with driver.getWindowHandle(). After opening a new window or tab, retrieve all handles using driver.getWindowHandles(). Switch to the desired window by iterating over the set and calling driver.switchTo().window(handle) until the title or URL matches the expected value. Perform actions, then switch back to the original handle when finished.

Explain how you would structure a Page Object Model for a login feature.

Create a LoginPage class that encapsulates web element locators for username, password and submit button. Provide methods such as enterUsername(String user), enterPassword(String pass) and clickLogin(). Keep assertions separate in test classes. This separation of concerns makes the code reusable, easier to maintain and allows changes to UI elements without affecting test logic.

What are the advantages of using Playwright over Selenium for modern web apps?

Playwright offers built‑in auto‑waiting for elements to become actionable, reducing the need for explicit waits. It supports multiple browsers and contexts in a single test, enabling parallel execution. Network interception and tracing are native features, which simplify testing of API calls and debugging. These capabilities often lead to faster, more stable scripts for single page applications.

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How do you perform API testing using a library in Java?

A common approach is to use RestAssured. Write a request with given().header("Content-Type","application/json").body(payload) then call when().post(url) and validate the response with then().statusCode(200).body("key",equalTo("value")). Include assertions for status, response time and JSON schema to ensure the API behaves as expected.

Describe how you would integrate automated tests into a Jenkins pipeline.

Create a Jenkins job that checks out the code, sets up the environment and runs the test command, for example mvn test. Publish test reports using the JUnit plugin and archive screenshots or logs as artifacts. Configure the job to fail on test errors and optionally trigger downstream jobs for deployment when the test stage passes.

What is a flaky test and how can you reduce its impact?

A flaky test passes or fails intermittently without code changes, often due to timing, environment or data issues. Reduce flakiness by using explicit waits instead of fixed sleeps, isolating test data, mocking external services and ensuring the test environment is stable. If a flaky test remains, mark it as such, investigate root causes and prioritize fixing it before release.

How do you report a bug found during automation testing?

Include a clear summary, steps to reproduce, expected and actual results, and severity. Attach screenshots, logs and the failing test script. Provide environment details such as browser version, OS and test data. Link the bug to the related test case in the test management tool so developers can trace the origin easily.

Explain the role of assertions in test automation and give an example in Java.

Assertions verify that the application behaves as expected at a specific point. They cause the test to fail immediately when a condition is not met, providing quick feedback. In Java with TestNG, an example is Assert.assertEquals(actualTitle, "Dashboard", "Title mismatch");. This checks that the page title matches the expected value and reports a clear message on failure.

Scenario questions

You notice a flaky login test causing intermittent failures in the nightly build. How do you address it?

Identify the root cause by reviewing logs and timing. Replace any fixed sleeps with explicit waits for elements to be clickable. Ensure test data is reset before each run and run the test locally to reproduce. If the issue persists, isolate the test, add retry logic for a limited count, and raise a ticket to investigate infrastructure factors.

Describe how you would test an end‑to‑end banking transaction that involves both UI and API calls.

Start by automating the UI steps to initiate the transaction, capturing the transaction ID. Use an API call to verify the transaction status and details in the backend, asserting that the amount, account numbers and timestamps match. Combine the UI and API validation in a single test flow, handling data cleanup at the end to keep the environment consistent.

The release deadline is near and you have many automated test cases. How do you prioritize which ones to run?

Classify tests by criticality: smoke, regression and low risk. Execute smoke tests on every build, run high‑impact regression tests that cover core functionalities, and defer low‑risk or long‑running tests to a nightly batch. Communicate the selection to the team, ensure coverage of the most important features and be ready to adjust based on stakeholder feedback.

HR and behavioural questions

Tell me about a time you missed a deadline. How did you handle it?

Use the STAR format. Situation: a release was delayed due to unexpected environment issues. Task: deliver the automated test suite on time. Action: communicated early with the lead, re‑prioritized test cases, added temporary manual checks and worked extra hours to finish critical scripts. Result: the release went out with essential coverage and the team appreciated the transparency and proactive mitigation.

How do you handle conflicting priorities from developers and managers?

First acknowledge both viewpoints, then clarify the impact of each priority on quality and schedule. Propose a compromise such as splitting time or deferring lower risk items. Keep written records of decisions and follow up with status updates. This shows you respect both sides while keeping the project’s quality goals in focus.

Describe a situation where you improved an existing automation suite.

Identify the situation, such as a suite with duplicated code and long execution time. Explain the action: refactored using a Page Object Model, introduced data‑driven testing and parallel execution on a CI server. Highlight the result: execution time dropped by 40 percent, maintenance effort decreased and the team could get feedback faster.

Why do you want to work at TCS as a QA Automation Tester?

Structure the answer: show knowledge of TCS’s global client base and focus on digital transformation, express enthusiasm for working on large scale projects, and align your automation skills with the company’s emphasis on quality and innovation. End with a brief personal note about growth and contribution.

Your last 48 hours before the interview

  1. Review core Selenium commands and locator strategies.
  2. Write a small script to automate a login page using the Page Object Model.
  3. Practice an API test with RestAssured, asserting status and response body.
  4. Create a mock bug report including steps, logs and severity.
  5. Rehearse STAR stories for the behavioural questions listed.
  6. Get a good night rest and stay hydrated before the interview.

Common mistakes to avoid

Frequently asked questions

What is the typical interview format for a QA Automation Tester at TCS?

Candidates commonly report a phone screen with HR, followed by one or two technical rounds that cover coding, tool knowledge and scenario questions, and finally an HR round that explores behavioural fit and career goals.

Do I need to know a specific programming language for the role?

TCS usually looks for proficiency in at least one language such as Java or Python. Candidates often succeed by demonstrating solid coding fundamentals, even if they are not expert in every language.

How important is knowledge of cloud testing platforms?

Understanding of cloud based test execution, such as using Selenium Grid or Playwright on cloud browsers, is often valued because many TCS projects run tests at scale across multiple environments.

How should I prepare for the coding part of the interview?

Practice writing short scripts that interact with a web page, handle waits, and include assertions. Use an online editor to simulate the environment, and review common patterns like the Page Object Model and data driven testing.

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This is an independent preparation guide based on commonly reported interview patterns. The process varies by team, location and year. Interview AI Helper is not affiliated with TCS.

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