01
How do you make WebDriver thread-safe for parallel runs?
Show answer
Store each driver in a ThreadLocal so every thread gets its own instance and tests do not interfere.
Dream11 Automation Testing Interview Questions & Answers
Curated interview practice questions with answers. These are practice scenarios, not a verified list of past interview questions.
About Dream11 hiring for Automation Testing roles
Dream11 is an Indian sports technology platform and the flagship brand of Dream Sports, which also includes FanCode and other businesses. Its engineering and analytics teams build systems that handle very high traffic during live matches. It hires for software engineers, SDETs, data engineers, data analysts and data scientists.
For Automation Testing roles, this Dream11 practice set focuses most on Cucumber and BDD (6), Core Java for Testers (6), Selenium WebDriver (5), Git, Maven and Jenkins (4). It has 1 easy, 30 medium, 9 hard questions, so you can start easy and work up to the harder ones.
- Company type
- Product
- Headquarters
- Mumbai, India
- Main India offices
- Mumbai
Dream11 Automation Testing interview process
- Online assessment or assignment
- Technical round 1
- Technical round 2 (design or case)
- Hiring manager round
- Culture fit round
Typical pattern based on public candidate experiences. Rounds vary by role, team and year.
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02
How do you attach a screenshot to the Cucumber report when a scenario fails?
Show answer
@After
public void afterScenario(Scenario scenario) {
if (scenario.isFailed()) {
byte[] shot = ((TakesScreenshot) driver)
.getScreenshotAs(OutputType.BYTES);
scenario.attach(shot, "image/png", scenario.getName());
}
driver.quit();
}
03
Write Java code to find the second largest number in an integer array.
Show answer
public static int secondLargest(int[] nums) {
int first = Integer.MIN_VALUE, second = Integer.MIN_VALUE;
for (int n : nums) {
if (n > first) {
second = first;
first = n;
} else if (n > second && n != first) {
second = n;
}
}
if (second == Integer.MIN_VALUE) throw new IllegalArgumentException("No second largest");
return second;
}
04
Response times are fine with 50 users, but at 300 users the error rate jumps to 20 percent. How do you analyse it?
Show answer
Look at which requests fail and their error codes: 503 or 504 suggest overloaded servers or gateways, connection refused points to exhausted connection pools or ports. Find the user count where errors start by running a stepped ramp-up. Correlate with server metrics such as CPU, thread pools, database connections and GC. Confirm the load generator itself was not overloaded. Report the saturation point and the bottleneck with evidence, not just the error percentage.
05
Write Selenium code to verify that all links on a page are not broken.
Show answer
List<WebElement> links = driver.findElements(By.tagName("a"));
for (WebElement link : links) {
String url = link.getAttribute("href");
if (url == null || !url.startsWith("http")) continue;
HttpURLConnection con = (HttpURLConnection) new URL(url).openConnection();
con.setRequestMethod("HEAD");
int code = con.getResponseCode();
if (code >= 400) System.out.println("Broken: " + url + " " + code);
}
06
How do you retry failed tests in TestNG?
Show answer
Implement IRetryAnalyzer with a retry count and attach it through the test annotation or a listener to rerun flaky tests.
07
How do you rerun only failed Cucumber scenarios?
Show answer
Add the rerun plugin, for example rerun:target/failed.txt, to the main runner. It writes the location of each failed scenario. Create a second runner whose features point to @target/failed.txt and run it after the main run in Maven or Jenkins. Use reruns to separate real failures from flaky ones, but track flaky scenarios and fix them instead of hiding them.
08
Mobile tests pass on the emulator but fail on a low-end real device. How do you investigate?
Show answer
Low-end devices are slower, so fixed waits and short timeouts expire before screens render. Replace sleeps with explicit waits and increase timeouts sensibly. Check for vendor-specific pop-ups, battery optimisation dialogs or different keyboards on that brand. Compare screen size and resolution, since coordinate-based taps break. Collect device logs with adb logcat and screen recordings to see what the app was doing. Also check whether the app crashed due to low memory.
09
What new features came with Selenium 4?
Show answer
Relative locators, improved Grid, W3C compliance, new window or tab creation, Chrome DevTools Protocol access and element-level screenshots.
10
What is the use of Maven in automation projects?
Show answer
It manages dependencies through pom.xml, builds the project, runs tests with Surefire and standardises structure across teams.
11
How do you publish Allure or Extent reports from Jenkins?
Show answer
For Allure, install the Allure Jenkins plugin, configure the commandline tool, and add allure results: [[path: 'target/allure-results']] in the post always block. For Extent, archive the HTML file and use the HTML Publisher plugin to show it as a build link. Keep report history per build and share the link in failure notifications.
12
What are pre-processors and post-processors in JMeter?
Show answer
Pre-processors run before a sampler, for example a JSR223 PreProcessor that builds a signature or timestamp, or User Parameters that set values per thread. Post-processors run after a sampler and usually extract data from the response, such as JSON Extractor, Regular Expression Extractor or Boundary Extractor, storing it as a variable for later requests. Their scope depends on where they sit in the tree, so place them as children of the right sampler.
13
Write Appium code to scroll to an element by its text using UiScrollable on Android.
Show answer
// Scrolls the first scrollable container until the text is visible
String selector = "new UiScrollable(new UiSelector().scrollable(true))"
+ ".scrollIntoView(new UiSelector().text(\"Order History\"))";
WebElement item = driver.findElement(AppiumBy.androidUIAutomator(selector));
item.click();
14
How would you design a CI pipeline for nightly regression?
Show answer
Schedule the job, spin up environments or containers, run suites in parallel, store reports and screenshots, notify failures on Slack or email and track trends.
15
How do you test deep links in a mobile app with Appium?
Show answer
On Android use the mobile: deepLink command with the URL and package, for example driver.executeScript("mobile: deepLink", Map.of("url", "shop://product/42", "package", "com.example.shop")). On iOS simulators driver.get with the custom URL opens it, though Safari may show a confirm dialog to handle. Then assert that the correct screen and data are shown. Deep links are also a great shortcut to reach deep screens quickly in other tests.
16
What is the difference between open and closed workload models in load testing?
Show answer
In a closed model a fixed number of users loop through the scenario, so when the server slows down, users wait and the arrival rate drops, which can hide problems. In an open model new requests arrive at a set rate regardless of response time, like real internet traffic, so a slow server builds a queue. JMeter thread groups are closed by default; the Open Model Thread Group or throughput timers approximate open workloads.
17
What are Java 8 streams and lambdas?
Show answer
Lambdas are short anonymous functions; streams process collections declaratively with filter, map and collect, for example filtering link text from a list of elements.
18
How do you take a screenshot on failure in TestNG?
Show answer
Implement ITestListener.onTestFailure():
File src = ((TakesScreenshot) driver).getScreenshotAs(OutputType.FILE);
then copy it into the reports folder.
19
How do you run Selenium tests in Docker containers in CI?
Show answer
Use official Selenium images, either standalone-chrome for simple runs or a Grid with hub and node containers via Docker Compose. The test container or Jenkins agent points RemoteWebDriver to http://selenium-hub:4444. Containers give the same browser version everywhere and are cleaned after each run. Add shm_size for Chrome stability and record videos for failed tests if needed.
20
How do you handle test data cleanup in Cucumber scenarios?
Show answer
Create data in Given steps through APIs, record the created IDs in the scenario context, and delete them in an @After hook, which runs even when the scenario fails. Use unique names with a timestamp or UUID to avoid clashes in parallel runs. For shared environments, add a nightly cleanup job for leftover data tagged with a test prefix.
21
Write a Java stream that extracts and sorts product prices from a list of WebElements.
Show answer
List<Double> prices = driver.findElements(By.cssSelector(".price"))
.stream()
.map(WebElement::getText)
.map(t -> t.replaceAll("[^0-9.]", ""))
.map(Double::parseDouble)
.sorted()
.collect(Collectors.toList());
System.out.println(prices);
22
Business stakeholders never read your feature files. Is BDD still worth it?
Show answer
Partly. Readable scenarios still help testers and developers, but if nobody discusses examples before coding, Cucumber is only an extra layer over normal tests. I would first try to restart three-amigos sessions for complex stories. If the business truly will not engage, I would keep Gherkin only for key business flows and write lower-level tests in plain TestNG to reduce maintenance.
23
How do you fix a Maven dependency conflict?
Show answer
Run mvn dependency:tree to see which versions are pulled in transitively. Maven picks the nearest version, which may not be the one you need. Fix by declaring the required version in dependencyManagement, excluding the unwanted transitive dependency with exclusions, or upgrading the library that brings the old version. Conflicts often appear as NoSuchMethodError or ClassNotFoundException at runtime.
24
What is the scope of a step definition class instance in Cucumber?
Show answer
Cucumber creates a new instance of every glue class for each scenario. Instance fields therefore reset between scenarios, which keeps scenarios isolated. This is why you should not rely on static variables for state: they survive across scenarios and threads, causing order-dependent failures and clashes in parallel runs. Share state through injected context objects instead.
25
Describe a time you automated a manual build or release step for the QA team.
Show answer
Situation: before each regression a tester spent an hour deploying the build to QA and seeding data by hand. Task: remove that manual step. Action: I wrote a Jenkins pipeline stage that deployed the build, ran database seed scripts and a smoke check, then triggered the regression job, and documented it for the team. Result: setup dropped to ten minutes without human effort, and regressions could run overnight automatically.
26
How do you run Cucumber scenarios in parallel?
Show answer
With TestNG, extend AbstractTestNGCucumberTests and override scenarios() with @DataProvider(parallel = true), then set data-provider-thread-count. With JUnit 5, set cucumber.execution.parallel.enabled=true in junit-platform.properties. Each scenario must own its WebDriver, usually through a ThreadLocal or a per-scenario DI context, and test data must not clash. Parallelism is per scenario, not per step.
27
Your Selenium tests in CI produce blank screenshots in headless mode. What could be wrong?
Show answer
The screenshot may be taken before the page renders, the window size in headless mode may be tiny, or the browser is crashing due to low shared memory in Docker. Set --window-size=1920,1080, use the new headless mode, wait for page content before capturing, and add --disable-dev-shm-usage or a larger shm size for containers.
28
Developers changed a field from a number to a string and your tests did not catch it. How do you prevent this?
Show answer
Add JSON schema validation for key responses so type changes fail immediately, and deserialize into typed POJOs, which fail when types do not match. For services with multiple consumers, introduce contract tests so providers learn about breaks before deploying. Also ask for API changes to be shared in pull requests or a changelog that QA reviews.
29
Difference between absolute and relative XPath?
Show answer
Absolute starts from the root (/html/...) and breaks easily; relative starts anywhere with // and is more stable, for example //input[@id='email'].
30
How do you record videos of tests running on a Docker Selenium Grid?
Show answer
Add the selenium/video image as a sidecar container next to each node, sharing the node's display through DISPLAY_CONTAINER_NAME, and mount a folder for the mp4 files. Newer Grid versions also support recording per session by setting the se:recordVideo capability with Dynamic Grid. Name videos with se:name so they match test names. Keep videos only for failed tests or for a few days, because they use a lot of disk space.
31
What is Docker and how does it help tests?
Show answer
Docker packages tools in containers so tests run identically everywhere; Selenium Grid and browsers can be started quickly in containers.
32
How do you manage test data in a framework?
Show answer
Use external files or APIs and database setup scripts, generate unique data per run, and clean up afterwards so tests stay independent.
33
Should assertions be written inside page objects?
Show answer
Generally no. Page objects should expose state and actions, such as getErrorMessage() or isLoggedIn(), and tests should make the assertions. This keeps page classes reusable across positive and negative tests and keeps the test intent visible. A small exception is a simple check that the correct page has loaded, often done in the constructor or an isAt() method.
34
How do you test negative scenarios for an API?
Show answer
Send invalid or missing fields, wrong data types, values beyond limits, invalid IDs, expired or missing tokens, wrong HTTP methods and malformed JSON. Assert the correct status (400, 401, 403, 404, 405, 422) and a clear error body without stack traces. Negative tests often find more defects than happy paths because validation and security checks are frequently incomplete.
35
How do you verify that an element is displayed, enabled or selected?
Show answer
Use isDisplayed(), isEnabled() and isSelected() on the WebElement before interacting or asserting.
36
Tests on the Grid fail with SessionNotCreatedException saying the new session request timed out. What do you check?
Show answer
It means no matching free slot appeared in time. Check the Grid UI to see whether nodes are registered and whether their capabilities match the request, such as browser name, version or platform. Compare the test thread count with total slots, since extra threads just wait in the queue. Look for stuck sessions holding slots after aborted builds. Then increase capacity, reduce threads, or raise the session request timeout.
37
What is the use of the this and super keywords?
Show answer
this refers to the current object; super refers to the parent class, used to call parent constructors and methods.
38
How do you build dynamic JSON request bodies without hard-coded strings?
Show answer
Use POJOs with a builder pattern or Lombok @Builder, so tests write User.builder().name("Ravi").role("QA").build(). For quick cases use a HashMap or Jackson ObjectNode. For large templates, keep a JSON file and change fields with a JSON library. Combine with a faker library for unique values. This avoids escaping issues and makes changes to the schema easy to update.
39
You see ConcurrentModificationException in your test utility. What causes it and how do you fix it?
Show answer
It occurs when a collection is modified while being iterated with a for-each loop, for example removing items from an ArrayList inside the loop. Fix by using Iterator.remove(), removeIf(), collecting items to remove separately, or using CopyOnWriteArrayList or ConcurrentHashMap when threads share the collection. In parallel tests, shared lists are a common source.
40
What are try-with-resources and why use them?
Show answer
A try block that automatically closes resources such as file readers or streams, preventing leaks without a finally block.
Tips to crack the Dream11 Automation Testing interview
- Practise system design for sudden traffic spikes, such as many users joining just before a cricket match starts.
- Prepare analytics cases on user engagement, retention and contest participation around major tournaments.
- Keep up with regulatory changes affecting online gaming in India, as they directly shape the company's business.
- Keep a one-minute story ready for every project on your CV: problem, your part, tools, result.
- Practise the hard questions on this page aloud; Dream11 interviewers usually ask follow-ups on your first answer.
Frequently asked questions
How many rounds are there in the Dream11 Automation Testing interview?
Candidates usually go through 5 stages: Online assessment or assignment; Technical round 1; Technical round 2 (design or case); Hiring manager round; Culture fit round. The exact rounds change with the role, team, location and your experience, so confirm the process with the recruiter.
Which topics should I prepare for the Dream11 Automation Testing interview?
This practice set leans on Cucumber and BDD (6), Core Java for Testers (6), Selenium WebDriver (5), Git, Maven and Jenkins (4). Revise those first, then practise explaining one or two of your own projects end to end, because most Dream11 interviewers ask you to walk through real work.
Are these the exact questions asked at Dream11?
No. These are curated practice questions that match the skills and difficulty usually tested in product interviews like Dream11's. They are not a leaked or verified list of past questions.
Where does Dream11 hire Automation Testing professionals in India?
Dream11 has large teams in Mumbai. Openings and locations change often, so check the Dream11 careers page and filter by city and experience.
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