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Toast Software Developer Interview Questions and Answers

Updated 17 Dec 2024

Toast Software Developer Interview Experiences

1 interview found

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via LinkedIn and was interviewed in Nov 2024. There was 1 interview round.

Round 1 - One-on-one 

(3 Questions)

  • Q1. Roles and responsibilities
  • Q2. Problem based questions
  • Q3. Code test & discussions over best practices, best solutions, time and space complexities

Interview questions from similar companies

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Aptitude Test 

It was easy basic questions were there and we were asked to write two emails.

Round 2 - Technical 

(2 Questions)

  • Q1. Questions related to projects
  • Q2. QBasic SQL questions
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
No response

I applied via Company Website and was interviewed in Feb 2024. There were 2 interview rounds.

Round 1 - Aptitude Test 

Normal Basic Interview GK, Maths,Average.

Round 2 - Technical 

(2 Questions)

  • Q1. Prepare as per Domain Like Front learn Loop
  • Q2. Loop with Continue
  • Ans. 

    Using 'continue' in a loop to skip current iteration and move to the next one.

    • Continue statement is used to skip the current iteration of a loop and move to the next one.

    • Helps in avoiding unnecessary code execution within a loop.

    • Example: for(int i=0; i<5; i++) { if(i == 2) { continue; } System.out.println(i); }

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Just come with basic small project learn basic attitude to learn not to earn.
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Company Website and was interviewed in Mar 2024. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. Implement readers-writer lock
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Aptitude Test 

There were 50 question out of which if you score 20 you were passed out to next round, No negative markings.

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - One-on-one 

(2 Questions)

  • Q1. Explain basics of c#
  • Ans. 

    C# is a programming language developed by Microsoft for building a wide range of applications on the .NET framework.

    • C# is an object-oriented language with features like classes, inheritance, and polymorphism.

    • It is strongly typed, meaning variables must be declared with a specific data type.

    • C# supports modern programming concepts like async/await for asynchronous programming.

    • It is commonly used for developing desktop, w...

  • Answered by AI
  • Q2. C# basics oops sql server

Interview Preparation Tips

Interview preparation tips for other job seekers - prepare basics

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed before Jan 2024. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. Oops? .net core features
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I was interviewed before Feb 2022.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Don’t add your photo or details such as gender, age, and address in your resume. These details do not add any value.
View all tips
Round 2 - Technical 

(1 Question)

  • Q1. Linked list (detect loop, reverse, delte a node) tree (height, DFS) graph theory concept C++ basic questions
Round 3 - One-on-one 

(1 Question)

  • Q1. Total 3 round of Technical interviews.

Interview Preparation Tips

Interview preparation tips for other job seekers - C++ basics, Algo and Data structure and some basic concept of graph theory.

I was interviewed before Apr 2021.

Round 1 - Coding Test 

(2 Questions)

Round duration - 60 minutes
Round difficulty - Easy

The second round is also written but you need to write programming based on their concept.

  • Q1. 

    Prime Numbers Identification

    Given a positive integer N, your task is to identify all prime numbers less than or equal to N.

    Explanation:

    A prime number is a natural number greater than 1 that has no po...

  • Ans. 

    The naïve approach for this question is to run a loop from the start to the end number. And for each number, check if it is prime or not. If the number is prime, we print it otherwise skip it.

    One optimization to this approach would be to skip all even numbers (except 2 if present in interval) since even numbers are not prime.
    Function to check if a number is prime or not :
    isPrime(n):
    if (n <= 1) return false
    for (i=2;

  • Answered Anonymously
  • Q2. 

    Palindrome String Validation

    Determine if a given string 'S' is a palindrome, considering only alphanumeric characters and ignoring spaces and symbols.

    Note:
    The string 'S' should be evaluated in a case...
  • Ans. 

    The idea is to create a copy of num and recursively pass the copy by reference, and pass num by value. In the recursive calls, divide num by 10 while moving down the recursion tree. While moving up the recursion tree, divide the copy by 10. When they meet in a function for which all child calls are over, the last digit of num will be ith digit from the beginning and the last digit of copy will be ith digit from the end

  • Answered Anonymously
Round 2 - Face to Face 

(6 Questions)

Round duration - 60 minutes
Round difficulty - Easy

Technical round with questions mainly on Java and OOPS concepts.

  • Q1. What is the difference between static methods and instance methods in Java?
  • Ans. 

    Instance method can access the instance methods and instance variables directly.
    Instance method can access static variables and static methods directly.
    Static methods can access the static variables and static methods directly.
    Static methods can’t access instance methods and instance variables directly. They must use reference to object. And static method can’t use this keyword as there is no instance for ‘this’ to ref

  • Answered Anonymously
  • Q2. What is the difference between an abstract class and an interface in Java?
  • Ans. 

    1) Abstract class can have abstract and non-abstract methods. Interface can have only abstract methods. Since Java 8, it can have default and static methods also.
    2) Abstract class doesn't support multiple inheritance. Interface supports multiple inheritance.
    3) Abstract class can have final, non-final, static and non-static variables. Interface has only static and final variables.
    4) Abstract class can provide the implem...

  • Answered Anonymously
  • Q3. What is the difference between ClassNotFoundException and NoClassDefFoundError in Java?
  • Ans. 

    1. As the name suggests, ClassNotFoundException is an exception while NoClassDefFoundError is an error.
    2. ClassNotFoundException occurs when classpath does not get updated with required JAR files while error occurs when the required class definition is not present at runtime.

  • Answered Anonymously
  • Q4. What is the difference between an Error and an Exception in Java?
  • Ans. 

    1 Type : 
    Error : Classified as an unchecked type 
    Exception : Classified as checked and unchecked 
    2 Package :
    Error : It belongs to java.lang.error 
    Exception : It belongs to java.lang.Exception 
    3 Recoverable/ Irrecoverable : 
    Error : It is irrecoverable
    Exception : It is recoverable
    4 Error : It can't be occur at compile time 
    Exception : It can occur at run time compile time both 
    5 Ex...

  • Answered Anonymously
  • Q5. What is SerialVersionUID in Java?
  • Ans. 

    The serialization at runtime associates with each serializable class a version number called a serialVersionUID, which is used during deserialization to verify that the sender and receiver of a serialized object have loaded classes for that object that are compatible with respect to serialization.

  • Answered Anonymously
  • Q6. What are the requirements for creating an immutable class in Java?
  • Ans. 

    Following are the requirements: 

    The class must be declared as final so that child classes can’t be created.
    Data members in the class must be declared private so that direct access is not allowed.
    Data members in the class must be declared as final so that we can’t change the value of it after object creation.
    A parameterized constructor should initialize all the fields performing a deep copy so that data members can...

  • Answered Anonymously

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPAYodlee interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Design, Aptitude, OOPSTime required to prepare for the interview - 4 monthsInterview preparation tips for other job seekers

Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewSelected

Skills evaluated in this interview

Interview Questionnaire 

9 Questions

  • Q1. Questions related to the work done at my previous company
  • Q2. Find if a given directed graph is cyclic or not
  • Ans. 

    To check if a directed graph is cyclic or not

    • Use Depth First Search (DFS) algorithm to traverse the graph

    • Maintain a visited set to keep track of visited nodes

    • Maintain a recursion stack to keep track of nodes in the current DFS traversal

    • If a node is visited and is already in the recursion stack, then the graph is cyclic

    • If DFS traversal completes without finding a cycle, then the graph is acyclic

  • Answered by AI
  • Q3. You have a stream of bytes from which you can read one byte at a time. You only have enough space to store one byte. After processing those bytes, you have to return a random byte. Note: The probability of...
  • Ans. 

    Return a random byte from a stream of bytes with equal probability.

    • Create a variable to store the count of bytes read

    • Create a variable to store the current random byte

    • For each byte read, generate a random number between 0 and the count of bytes read

    • If the random number is 0, store the current byte as the random byte

    • Return the random byte

  • Answered by AI
  • Q4. Find if a given Binary Tree is BST or not
  • Ans. 

    Check if a binary tree is a binary search tree or not.

    • Traverse the tree in-order and check if the values are in ascending order.

    • For each node, check if its value is greater than the maximum value of its left subtree and less than the minimum value of its right subtree.

    • Use recursion to check if all nodes in the tree satisfy the above condition.

  • Answered by AI
  • Q5. Devise an algorithm to determine the Nth-to-Last element in a singly linked list of unknown length. If N = 0, then your algorithm must return the last element. You should parse the list only once
  • Ans. 

    Algorithm to find Nth-to-Last element in a singly linked list of unknown length

    • Traverse the list and maintain two pointers, one at the beginning and one at Nth node from beginning

    • Move both pointers simultaneously until the second pointer reaches the end of the list

    • The first pointer will be pointing to the Nth-to-Last element

    • If N=0, return the last element

    • Parse the list only once

  • Answered by AI
  • Q6. Given an array of integers, print all possible permutations. Also explain your approach
  • Ans. 

    Print all possible permutations of an array of integers

    • Use recursion to swap elements and generate permutations

    • Start with the first element and swap it with each subsequent element

    • Repeat the process for the remaining elements

    • Stop when all elements have been swapped with the first element

    • Print each permutation as it is generated

  • Answered by AI
  • Q7. Design a Stack DS that also prints in O(1) the minimum element you pushed in the stack
  • Ans. 

    Design a stack that prints the minimum element pushed in O(1)

    • Use two stacks, one for storing elements and another for storing minimums

    • When pushing an element, compare it with the top of minimum stack and push the smaller one

    • When popping an element, pop from both stacks

    • To get the minimum element, just return the top of minimum stack

  • Answered by AI
  • Q8. Given a linked list with loop, how would you find the starting point of the loop ?
  • Ans. 

    To find the starting point of a loop in a linked list, use Floyd's cycle-finding algorithm.

    • Use two pointers, one moving at twice the speed of the other.

    • When they meet, move one pointer to the head of the list and keep the other at the meeting point.

    • Move both pointers one step at a time until they meet again, which is the starting point of the loop.

  • Answered by AI
  • Q9. Find a number a matrix mat[m][n] where all the rows and columns are sorted non-decreasingly. What will be the complexity of the solution
  • Ans. 

    To find a number in a matrix where all rows and columns are sorted non-decreasingly. Complexity of the solution.

    • Use binary search to find the number in each row and column

    • Start from the top-right corner or bottom-left corner to optimize search

    • Time complexity: O(m log n) or O(n log m) depending on the starting corner

  • Answered by AI

Interview Preparation Tips

Skills: Algorithm, Data structure
College Name: Na

Skills evaluated in this interview

Toast Interview FAQs

How many rounds are there in Toast Software Developer interview?
Toast interview process usually has 1 rounds. The most common rounds in the Toast interview process are One-on-one Round.
What are the top questions asked in Toast Software Developer interview?

Some of the top questions asked at the Toast Software Developer interview -

  1. Code test & discussions over best practices, best solutions, time and space com...read more
  2. Problem based questi...read more

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Toast Software Developer Interview Process

based on 1 interview

Interview experience

5
  
Excellent
View more
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