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ShellBeeHaken Limited ​

Founding year2020
Company Websitehttps://shellbeehaken.com/
Career Websitehttps://shellbeehaken.com/join-us
Technologies Used

Introduction ​

ShellBeeHaken is a dev shop that specializes in customized software solutions development. As a product-based company, we have a unique customer-centric task management philosophy. We take pride in working with individuals who share similar ideologies with us. Within a short time, we were able to produce software for world-famous brands like Toyota, Fujitsu, Nagase, N-village, CCC, etc. Now we are working on a couple of SaaS-based exciting startup products. We have a perpetual startup spirit that differentiates us from others.

Interview Stages: ​

ShellBeeHaken interviews generally involve multiple rounds for Associate Software Engineer

  1. Written Test: In-person at ShellBeeHaken office
  2. On-site Interview: 2 technical rounds, 1 behavioral round
  3. Offer: Salary negotiations and offer

Topics: ​

  • Programming Fundamentals
  • Data Structures and Algorithms
  • Object Oriented Programming
  • Object Oriented Design
  • Database
  • Software Engineering

Questions ​

Questions from the written exam took place on 12 September 2025

Given a string of lowercase letters, you have to find the longest mirror substring from it. The string radar or racecar is not mirror but bid or dib is. For simplicity lets say b=d,i=i,o=o,w=w,v=v,x=x,p=q in the mirrored substring.

There is an array of numbers n. You have to merge any two neighboring elements to make the length of the array n-1 in such way that, the minimum of the maximum of each consecutive pair gets removed. If the array is { 2, 5, 3, 7, 9 }, the result can be { 7, 3, 7, 9 } or { 2, 8, 7, 9 }

Write the shortest path of the scenario graph. (The scenario included undirected graph with cycles)

Create a data structure uniqueQueue where you can get the kth last element of the queue by using get(k) method and push n if it is not in the queue using push(n) method.

Example:

python
push(11)
push(22)
push(33)
get(1) # returns 33
push(22)
get(2) # returns 22

You are designing a ride sharing app where you can take multiple passenger in specific destination. Given a set of trip data as tuples { pickup_time, drop_time, passenger_count }. You have to return the number of total trips taken maximizing the passenger count.

Example Input: [(0,30,5),(5,10,2),(15,20,2)]

Exmaple Output: 1

A SQL query was given to perform with a subquery and a JOIN operation.

Draw a class diagram of a course management system

If you are given to design a authentication service. Which design pattern you will use?

Show Answer

Strategy pattern

You are given a chat system to design. Polling, streaming or sockets which will you use? Why?

  • Describe idempotent and non-idempotent request in REST.
  • How does a DNS resolver work ?