Bharti Airtel Senior Technical Lead Interview Questions and Answers

Codility test with 3 questions in a total of 45 minutes

Q1. Python based questions
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Q1. Software architecture questions
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Q1. Cloud solutions questions with systems design
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Q1. Team fitment scenario based questions
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Q1. HR round with the usual questions
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Q1. Negotiations round based on expectations
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Q1. Reverse linked list
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Q2. Find substring in a given string
Ans. 
Use string methods to find a substring within a given string.
• Use the indexOf() method to find the starting index of the substring within the string.

• Use the substring() method to extract the substring based on the starting index and length.

• Consider using regular expressions for more complex substring matching.
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Q1. Find loop in linked list
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Detecting a loop in a linked list
• Use two pointers approach - slow and fast pointers

• If there is a loop, the fast pointer will eventually meet the slow pointer

• Check if the fast pointer reaches the end of the list (null) before meeting the slow pointer
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Q2. Delete node from linked list
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To delete a node from a linked list, update the pointers of the previous node to skip the node to be deleted.
• Traverse the linked list to find the node to be deleted.

• Update the 'next' pointer of the previous node to skip the node to be deleted.

• Free the memory allocated to the node to be deleted.
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Q1. What is your salary expectations
Ans. 
My salary expectations are based on my experience, skills, and the market rate for this position.
• Research the average salary range for Technical Specialists in the industry and location

• Consider your level of experience and expertise in the field

• Factor in any additional benefits or perks offered by the company

• Be prepared to negotiate based on the job responsibilities and requirements
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Q2. Your strength and weakness
Ans. 
My strength is my attention to detail and my weakness is my tendency to overthink.
• Strength: Attention to detail - I always make sure to thoroughly review my work to catch any errors or inconsistencies.

• Weakness: Overthinking - Sometimes I spend too much time analyzing a situation and struggle to make decisions quickly.
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Q1. Tell me about yourself
Ans. 
I am a highly skilled Technical Consultant with a strong background in IT solutions and project management.
• Over 5 years of experience in providing technical consulting services to clients

• Proficient in analyzing client requirements and designing customized solutions

• Strong project management skills, ensuring timely delivery and client satisfaction

• Expertise in implementing and troubleshooting complex IT systems

• Certified i...read more
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Q2. About Past experiences and alignement of the company
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Q1. They will test your technical expertise
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Q1. They will ask some managerial questions
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Q1. Salary discussions
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Q1. SQL queries based on design and optimization
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Q2. Java concepts around data structure and algorithms
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Q1. Basic idea about what all technologies written in resume
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Q2. Current role etc
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Q1. L2/L3 protocols
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Q2. In depth protocol knowledge
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Q1. L2/L3 Protocols
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Q2. Deep dive into latest project
Ans. 
Developed a web application for tracking and analyzing user behavior
• Used React.js for front-end development

• Implemented data visualization using D3.js

• Utilized Node.js and Express for back-end development

• Integrated with MongoDB for data storage
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Q1. General discussion as usual with HR
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Q2. Salary, compensation etc
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Q1. Selenium and basic telecom flows
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