Bigeye India SDET Interview: Rounds, Questions and Preparation

What the job involves

As an SDET at a global tech company like Bigeye India, you will design, build, and maintain automated test frameworks and test suites to validate data pipelines, APIs, and web applications. You will work closely with developers and product teams to ensure high-quality releases, often writing code in languages like Python or Java to create robust, scalable tests. The role blends software engineering with quality assurance, focusing on shift-left testing and continuous integration.

Role and Technical Knowledge

1. 1

   What is the difference between a QA engineer and an SDET?

   Highlight that SDETs write production-level automation code, build frameworks, and contribute to test infrastructure, while QAs may focus more on manual testing and test case execution.

2. 2

   Explain the test automation pyramid and how you would apply it in a data pipeline project.

   Describe the pyramid with unit tests at the base, integration tests in the middle, and UI tests at the top. For data pipelines, emphasize unit tests for transformations, integration tests for data flow, and minimal UI tests.

3. 3

   How do you test a REST API? What tools and techniques do you use?

   Cover status codes, response body validation, authentication, and error handling. Mention tools like Postman, REST Assured, and writing assertions in code.

4. 4

   What are some key challenges in testing data-intensive applications, and how do you address them?

   Discuss data volume, variety, and velocity. Mention strategies like sampling, data mocking, and using SQL queries to validate transformations and aggregations.

Practical Scenarios and Coding

1. 5

   Write a function to find the first non-repeating character in a string. How would you test it?

   Provide a clean solution (e.g., using a hash map) and outline test cases: empty string, all repeating, all unique, and special characters.

2. 6

   Given a web page with a login form, how would you automate a test for successful login using Selenium?

   Describe locating elements (ID, XPath), sending keys, clicking submit, and asserting the URL or a welcome message. Mention waits and page object model.

3. 7

   You have a SQL query that joins two tables. How would you verify that the join is correct in your test?

   Explain writing a query to compare row counts, checking for nulls, and validating that all expected records are present using set operations like EXCEPT.

4. 8

   How would you test a feature that processes user-uploaded CSV files and stores data in a database?

   Cover file format validation, data type checks, handling of large files, database insertion verification, and error handling for malformed files.

Behavioural and Situational

1. 9

   Tell me about a time you found a critical bug late in the development cycle. How did you handle it?

   Use STAR method: describe the situation, your action to communicate and mitigate, and the outcome. Emphasize collaboration and process improvement.

2. 10

   Describe a situation where you had to learn a new technology quickly for a testing task.

   Show adaptability and self-learning. Mention resources used, time management, and how you applied the new skill to deliver results.

3. 11

   How do you handle disagreements with a developer who thinks a bug is not worth fixing?

   Focus on data and user impact. Explain how you would present evidence, discuss severity, and escalate if needed while maintaining respect.

4. 12

   Why do you want to work as an SDET, and why at a company like Bigeye India?

   Connect your interest in coding and quality. Research the company's focus on data or tech, and express enthusiasm for building scalable test solutions.

HR and Company Fit

1. 13

   What are your salary expectations for this role?

   Research industry standards for freshers in India. Provide a range and express flexibility, focusing on the opportunity to learn and grow.

2. 14

   Where do you see yourself in five years?

   Show ambition aligned with the company. Mention growing into a senior SDET or test architect role, contributing to automation strategy.

3. 15

   Are you willing to relocate or work in different time zones if required?

   Be honest but flexible. If open, express willingness; if not, explain how you can still collaborate effectively.

4. 16

   What do you know about our company's products or services?

   Research Bigeye India's focus areas (e.g., data observability, analytics). Mention specific products or technologies and how they excite you.