Callaway Golf Senior Technical Lead Interview Questions and Answers

Q1. Why do you wanna join cars24?
Ans. 
I want to join cars24 because of its innovative approach to the automotive industry and the opportunity to work with a dynamic team.
• Innovative approach to the automotive industry

• Opportunity to work with a dynamic team

• Excited about the potential for growth and learning opportunities
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Q1. Tell me about your experience?
Ans. 
I have over 5 years of experience in software development, specializing in backend technologies.
• Developed scalable backend systems using Java and Spring framework

• Led a team of developers in implementing microservices architecture

• Worked on optimizing database queries for improved performance
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Q1. Explain virtual dom in React.
Ans. 
Virtual DOM is a lightweight copy of the actual DOM in React, used for efficient updates.
• Virtual DOM is a concept where a lightweight copy of the actual DOM is created in memory.

• When changes are made to the virtual DOM, React compares it with the actual DOM to identify the minimal number of updates needed.

• This process helps in optimizing performance by reducing the number of actual DOM manipulations.

• Example: When a use...read more
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Q2. How do you implement passwordless system
Ans. 
Implementing passwordless system involves using alternative authentication methods.
• Use email or SMS verification codes

• Implement biometric authentication

• Utilize hardware security keys

• Implement OAuth or OpenID Connect for single sign-on

• Leverage FIDO2 standards for passwordless authentication
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Q1. What to do for a cookieless system
Ans. 
To create a cookieless system, use alternative methods like local storage or URL parameters for tracking user data.
• Use local storage to store user data on the client side

• Utilize URL parameters to pass data between pages

• Implement server-side session management for user authentication

• Consider using JSON Web Tokens (JWT) for secure data transmission
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Q2. Explain in detail S.O.L.I.D principles
Ans. 
S.O.L.I.D principles are a set of five design principles in object-oriented programming to make software designs more understandable, flexible, and maintainable.
• Single Responsibility Principle (SRP) - A class should have only one reason to change.

• Open/Closed Principle (OCP) - Software entities should be open for extension but closed for modification.

• Liskov Substitution Principle (LSP) - Objects of a superclass should b...read more
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Python, Pytest & Robot Framework

Q1. Repear unit clear how many days 7 days. New unit clear 3 days
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Q2. Today plan 3000 thousand meetinga for scader. Leaders speeches
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Q3. Foxconn ful form FHH
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Q4. Operator response working
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Q5. All machine checking for scader.and operators
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Q6. All units handling very important
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Q7. No angry with others and operator
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Q1. UI Technical interview: 1. Javascript Questions 2. var let const 3. execution context 4. event loop 5. settimeout and set interval 6.hashmap and hash set
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Q2. Problem on hashmap (need to code) optimization needed
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Q1. Backend (interview) 1. Sql question 2. given a question need to write a sql 3.convert the that sql question to programming 4. Machine coding
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Q1. React Js Interview 1. state and props 2. what is virtual dom 3. diffing process 4. does browser understand jsx 5. given a question need to do live coding to create a counter component woth star and sto...read more
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Q1. Hiring manager round
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Q2. Previous experience on projects technical experience in frontend and testing asked about the real world scenarios
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Q1. General HR discussion
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