TCI Express Junior Engineer Interview Questions and Answers

Round duration - 45 Minutes
Round difficulty - Medium

Q1. Design a class booking application for students.
Ans. 
A class booking application for students to schedule and manage their classes.
• Create a class booking system where students can view available classes, book classes, and manage their schedule.

• Include features like class search, class details, booking confirmation, and calendar view.

• Implement user authentication to ensure only registered students can book classes.

• Allow students to cancel or reschedule classes with proper...read more
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Round duration - 60 Minutes
Round difficulty - Medium

The interviewer understand the current problem statement I was working on. 
Asked the clarifying questions and alternative approaches to solve the same and their tradeoffs.
Also, asked about the technologies I was using in depth and reason for choosing the same.

Q1. 
Gas Tank Problem Statement
You have a car with a gas tank of infinite capacity. There are 'N' gas stations located along a circular route, numbered from 0 to N-1. You begin your journey with an empty tank...read more
Ans. 
Find the starting gas station index to complete a circular route with gas and cost arrays.
• Iterate through gas stations, keeping track of gas remaining after each station

• If gas remaining is negative, reset starting station to current station + 1

• If total gas remaining at the end is greater than or equal to total cost, return starting station index
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Round duration - 45 Minutes
Round difficulty - Medium

This round was their with the CTO and was mostly the culture fitment round.

Round duration - 30 Minutes
Round difficulty - Easy

This round was with the cofounder and was mostly culture fitment.

The basic questions asked in an interview .

DP, graph, and array questions asked in 2nd round also asked my company project

Q1. Introduce yourself.
Ans. 
I am a software developer with 5 years of experience in Java and Python.
• Experienced in Java and Python programming languages

• Worked on various projects involving web development and data analysis

• Familiar with Agile methodologies and version control systems like Git
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Q2. Project related questions.
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Q1. Tell what is your name
Ans. 
My name is John Smith.
• Full name is John Smith

• Common name in English-speaking countries

• No middle name or initial
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Q2. What do you do in free time
Ans. 
In my free time, I enjoy hiking, playing video games, and learning new programming languages.
• Hiking in local trails and national parks

• Playing video games like Overwatch and Minecraft

• Learning new programming languages like Python and JavaScript
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Q1. General discussion on experience
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Q1. Knowledge on SQL and how to write a query
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Q2. Knowledge on DSA and coding problems to solve.
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Q3. Knowledge on APIS (structure, security etc.)
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Q1. How does state in react work?
Ans. 
State in React is a JavaScript object that stores component data and determines how the component renders and behaves.
• State is mutable and can be updated using the setState() method.

• State should be used for data that will change over time and affect the component's rendering.

• State should not be directly modified, as React may not re-render the component correctly.
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Q2. How do i manage and debug threads and worker in python?
Ans. 
To manage and debug threads and workers in Python, use built-in modules like threading and multiprocessing, and tools like logging and debugging libraries.
• Use the 'threading' module for managing threads in Python

• Use the 'multiprocessing' module for managing worker processes

• Utilize tools like logging to track the execution flow of threads and workers

• Use debugging libraries like 'pdb' or 'pydev' for debugging threads and...read more
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Q3. Question related to work mentioned in your resume
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Q1. Question related to previous work
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Q2. Biggest technical problem I have faced in my career and how have I come through/ solved it?
Ans. 
I faced a major technical problem when a critical system crashed due to a software bug.
• Identified the root cause of the bug through thorough debugging and analysis

• Collaborated with the development team to implement a fix and tested it rigorously

• Implemented monitoring tools to prevent similar issues in the future
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Q3. What datastructures and coding standards did i follow/implement?
Ans. 
I implemented data structures like arrays, linked lists, and trees. Followed coding standards like naming conventions and code documentation.
• Implemented arrays for efficient storage and access of data

• Utilized linked lists for dynamic memory allocation and insertion/deletion operations

• Implemented trees for hierarchical data representation

• Followed naming conventions like camelCase for variables and functions

• Documented co...read more
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Q1. Questions related to my previous working experiences
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Q2. How have i solved and designed complex solutions?
Ans. 
I have solved and designed complex solutions by breaking down the problem into smaller parts, collaborating with team members, utilizing my technical expertise, and thinking creatively.
• Break down the problem into smaller, more manageable parts

• Collaborate with team members to gather different perspectives and expertise

• Utilize technical expertise and knowledge to come up with innovative solutions

• Think creatively to explo
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Q1. Why this company? Isn't (current company) a competitor to Elastic run?
Ans. 
I believe that this company offers a unique opportunity for growth and innovation in the field of engineering.
• I am attracted to the innovative projects and technologies that this company is working on.

• I see potential for personal and professional growth within this company.

• I admire the company's commitment to diversity and inclusion in the workplace.
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Q2. Questions related to work delegation
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2 coding questions .array or string helpful

Q1. Questions on Django middleware, models and queries
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Q1. Design an algorithm to efficiently to send office bus to all location in the city
Ans. 
Use a greedy algorithm to send the office bus to all locations in the city efficiently.
• Start from the office location and pick the nearest location to visit next.

• Continue picking the nearest unvisited location until all locations are covered.

• Repeat the process until all locations are visited.

• Consider using Dijkstra's algorithm or a similar approach for finding the nearest location.

• Optimize the route by considering traf
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Q1. Round with CTO, mostly behavioural and expected pay
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