Exotel Interview Questions and Answers

Find the longest common substring in an array of strings using efficient algorithms.

• Use a binary search approach on substring lengths combined with a hash set for efficiency.

• Example: For ['flower', 'flow', 'flight'], the longest common substring is 'fl'.

• Another method is to use dynamic programming to build a table of common substrings.

• Example: For ['abc', 'ab', 'a'], the longest common substring is 'a'.

Design a system for uploading and processing large files efficiently.

• Use a cloud storage solution (e.g., AWS S3) for scalable file storage.

• Implement chunked uploads to handle large files without timeouts.

• Utilize background processing (e.g., AWS Lambda or a message queue) for file processing.

• Provide user feedback during upload (e.g., progress bar) to enhance user experience.

• Consider file validation and error handli...read more

Conduct a comprehensive pricing analysis for Exotel by evaluating market trends, customer needs, and competitor pricing strategies.

• Identify target customer segments and their willingness to pay.

• Analyze competitor pricing models, such as Twilio or Plivo, to benchmark Exotel's pricing.

• Conduct surveys or interviews with existing customers to gather feedback on pricing satisfaction.

• Evaluate the cost structure of Exote...read more

Key metrics for a GenAI product include user engagement, retention, revenue, and model performance to ensure business success.

• User Engagement: Track daily active users (DAU) and session duration to measure how often users interact with the product.

• Retention Rate: Monitor the percentage of users returning after their first use, indicating product value and satisfaction.

• Revenue Metrics: Analyze monthly recurring rev...read more

I have a foundational understanding of coding, which helps in product management and collaborating with technical teams.

• I have experience with Python, which I used for data analysis in a previous project.

• I understand HTML and CSS, allowing me to communicate effectively with web developers.

• I have worked with APIs, enabling me to integrate different services into our products.

• I can read and understand JavaScript, wh...read more

Discussing my resume highlights my skills and experiences relevant to the Customer Success Manager role.

• Experience in managing customer relationships, ensuring satisfaction and retention.

• Implemented a customer feedback system that increased NPS by 20%.

• Led a team to onboard new clients, reducing onboarding time by 30%.

• Developed training materials that improved customer product usage by 40%.

Find the length of the longest substring with all distinct characters in a given string.

• Use a sliding window approach to track characters and their indices.

• Maintain a set to store characters in the current substring.

• Expand the window by moving the right pointer and add characters to the set.

• If a duplicate character is found, move the left pointer to remove duplicates.

• Example: For 'abcdab', the longest substring is...read more

API stands for Application Programming Interface. It is a set of protocols, routines, and tools for building software applications.

• API allows different software applications to communicate with each other

• API provides a layer of abstraction between the application and the underlying system

• Examples of APIs include Google Maps API, Twitter API, and Facebook API