Barclays Team Lead Interview Questions and Answers

Q1. How do you build a web performant app?
Ans. 
To build a web performant app, focus on optimizing code, reducing server requests, using caching, and optimizing images.
• Optimize code by minimizing unnecessary functions and variables

• Reduce server requests by combining files, using CDNs, and lazy loading

• Utilize caching to store data locally and reduce load times

• Optimize images by resizing, compressing, and using modern formats like WebP
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Q2. What data structure you want to use for returning database records and why?
Ans. 
I would use an array data structure for returning database records as it allows for easy access and manipulation of individual records.
• Arrays provide O(1) access time for individual records, making it efficient for returning database records.

• Arrays allow for easy iteration over all records to perform operations such as filtering or sorting.

• Arrays can easily be converted to JSON or other data formats for returning to th...read more
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Q1. Tell me about yourself
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Q1. Roles and responsibilities of previous organization
Ans. 
Managed a team of 10 employees, delegated tasks, conducted performance evaluations, and ensured project deadlines were met.
• Managed a team of 10 employees

• Delegated tasks and responsibilities

• Conducted performance evaluations

• Ensured project deadlines were met
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Q1. Process and subject knowledge
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Logical reasoning and analytical skills

Q1. 1.Questions based on your prior experience 2. Key skills mentioned on the cv 3. What do you know about Natwest group
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Q2. Tell about your self ? Tell about your strength and weeknesa
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Q1. Expecting some team management skills and also product knowledge
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Q2. What is EMV CHIP ?
Ans. 
EMV CHIP is a global standard for credit and debit card payments that uses a microprocessor chip to authenticate transactions.
• EMV stands for Europay, Mastercard, and Visa, the three companies that developed the standard

• The chip generates a unique code for each transaction, making it more secure than traditional magnetic stripe cards

• EMV technology is used in over 80 countries worldwide

• Many countries have mandated the us...read more
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There were 2 question:-
1. array(easy to medium)
2. Graph(easy to medium)

Q1. Q1. Explain joins and their type?
Ans. 
Joins are used to combine data from two or more tables based on a related column.
• Inner join returns only the matching rows from both tables

• Left join returns all rows from the left table and matching rows from the right table

• Right join returns all rows from the right table and matching rows from the left table

• Full outer join returns all rows from both tables

• Cross join returns the Cartesian product of both tables
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Q2. Q2. what is normalization?
Ans. 
Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.
• Normalization involves breaking down a database into smaller, more manageable tables.

• Each table should have a primary key and only contain data that is related to that key.

• Normalization helps to prevent data inconsistencies and anomalies.

• There are different levels of normalization, with each level building on t...read more
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Q1. Why job change ?
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Q2. Why culture ICICI bank to kotak mahindra bank
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Q3. How much tha salary ?
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Q4. Job experience 3 year
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Q5. No answer see my side
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Q1. They will check if we have relevant experience.
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Q1. They will explain about the criticallity of our role and will check if we are suitable for it.
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Q1. CTC finalize will happen and hr will talk very narrow. We need to clarify all our doubts in that round itself.
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