Foodhub Lead Engineer Interview Questions and Answers

Q1. Coding with design fundamentals on BST and DP
Add your answer

Q1. Coding test with BST, DP
Add your answer
Q2. LLD, HLD on telecom. SOLID principles, Design patterns, System design
Add your answer

Q1. One on one round with Architect and Manager. What do we know about SIP, SS7, Diameter.
Add your answer

Q1. Usual HR questions
Add your answer

Q1. Questions regarding javascript
Add your answer
Q2. Questions regarding php and wordpress
Add your answer

Q1. Questions regarding Node js
Add your answer
Q2. Questions regarding wordpress
Add your answer

Q1. Salary discussion
Add your answer

Q1. Mostly towards your programming and coding ability. 1. Starting from DS, trees, algorithm, multi threading 2. Ask around strings and arrays
Add your answer
Q2. 1. longest path from node to node in tree
Ans. 
The longest path from one node to another in a tree is the maximum number of edges that must be traversed to reach from one node to another.
• The longest path in a tree is also known as the diameter of the tree.

• The diameter of a tree can be found by first finding the farthest leaf node from any arbitrary node, and then finding the farthest leaf node from that leaf node.

• The sum of the distances from the root to the farthe...read more
Answered by AI
Add your answer

Q1. OS, In death problem solving questions, multi threading.
Add your answer
Q2. 1. Process 2. Dynamic memory 3. segment corrupted recovery 4. design system to take billions of request
Add your answer

Q1. Explain Oops Concept
Ans. 
Oops Concept is a programming paradigm that focuses on objects and their interactions to solve complex problems.
• Oops Concept stands for Object-Oriented Programming

• It is based on the principles of encapsulation, inheritance, and polymorphism

• Encapsulation allows bundling of data and methods into a single unit called an object

• Inheritance enables the creation of new classes by inheriting properties and behaviors from exist...read more
Answered by AI
Add your answer

Q1. Explain ACID property in SQL
Ans. 
ACID property ensures that database transactions are processed reliably.
• ACID stands for Atomicity, Consistency, Isolation, and Durability.

• Atomicity ensures that a transaction is treated as a single unit of work, either all or none of its operations are executed.

• Consistency ensures that a transaction brings the database from one valid state to another.

• Isolation ensures that concurrent transactions do not interfere with ...read more
Answered by AI
Add your answer

Q1. Related to Product development
Add your answer
Q2. Product life cycle
Add your answer

Reverse Linked List.
Print left view of tree.
Find 3rd highest salary.
Multiple other SQL questions.

Q1. Design parking lot. How you handle scenario when 2 persons trying to take same slot.
Ans. 
Implement a parking lot system to handle scenarios where two persons try to take the same slot.
• Implement a reservation system where slots can be temporarily reserved by users before they actually park their vehicles.

• Use a timestamp to track when a slot was reserved to resolve conflicts between users trying to park in the same slot at the same time.

• Implement a queue system to handle situations where multiple users are w...read more
Answered by AI
Add your answer

Normal question on python, SQL, Data structure, and 2 coding questions on Python & SQL.

This coding round was face-to-face. It was again on hackerrank portal. The interviewer just wants to know how you think and take approaches in terms of time and space complexity. and then you do code.