'Coding has over 700 languages', '67% of programming jobs aren’t in the technology industry', 'Coding is behind almost everything that is powered by electricity'
Lifesight interview experience Real time questions & tips from candidates to crack your interview
SDE - 1
Lifesight
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3 rounds | 9 Coding problems
Interview preparation journey
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Preparation
Duration: 3 Months
Topics: DataStructures, Algorithms, Problem Solving, Big Data, Distributed Systems, Spark
Tip
Tip

Tip 1 : Be solid with the basics of Ds, Algo. Good to have end to end projects which are hosted on cloud.
Tip 2 : Its always good to be presentable and have good communications skills
Tip 3 : Be honest, clear in approach and always walkthrough your thought process to the interviewer

Application process
Where: Linkedin
Eligibility: 2+ years of Work Experience in the relevant field
Resume Tip
Resume tip

Tip 1 : Mention your projects and experience at the top. Be clear on what was done, a brief on how it was done, language /tech stack involved. If possible try to host and make it accessible. You never know if you can present it with just one click.
Tip 2 : Choose a balance between, white spaces and text, it should be well indented, no grammatical errors.
Tip 3 : It takes less than 2 min to scan a resume. Don't mention things which are irrelevant.

Interview rounds
01
Round
Medium
Video Call
Duration75 Minutes
Interview date28 Dec 2020
Coding problem3

This round was with SDE-1 
After my introduction , he asked me 3 Questions
 

1. Validate BST
Moderate
25m average time
0/80
Asked in companies
GrofersMakeMyTripPaypal

You have been given a binary tree of integers with N number of nodes. Your task is to check if that input tree is a BST (Binary Search Tree) or not.

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2. Longest Sub-string With K Distinct Characters
Easy
15m average time
85% success
0/40
Asked in companies
AmazonDeloitteLifesight

You are given a string 'S' of length 'N' consisting of lowercase English alphabet letters. You are also given a positive integer 'K'.

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3. Cycle Detection In Undirected Graph
Moderate
0/80
Asked in companies
Publicis SapientPaytm (One97 Communications Limited)Optum

You have been given an undirected graph with 'N' vertices and 'M' edges. The vertices are labelled from 1 to 'N'.

Your task is to find if the graph contains a cycle or not.

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02
Round
Medium
Video Call
Duration90 Miinutes
Interview date30 Dec 2020
Coding problem3

This round was with a Senior Data Engineer as this position was a mix of Backend and Big Data.

 

1. Covid Vaccination
Moderate
0/80
Asked in companies
CognizantBNY MellonSAP Labs

We are suffering from the Second wave of Covid-19. The Government is trying to increase its vaccination drives. Ninja w...

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2. Combination Sum
Easy
15m average time
85% success
0/40
Asked in companies
AmazonFlipkartMakeMyTrip

You are given an array 'ARR' of 'N' distinct positive integers. You are also given a non-negative integer 'B'.


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3. Technical Questions

He asked me 4-5 SQL queries. 
Asked to implement Upsert functionality in Spark Dataframes,
Asked about optimizations I had used and was aware about, interanl implementation of thoese Optimization.

03
Round
Easy
Video Call
Duration75 Minutes
Interview date4 Jan 2021
Coding problem3

This round was taken by Engineering Manager
There were 2 sections to this round
Technical and Non Techincal
 

1. Basic HR Questions

My Aspirations, How my team mates should be , How my Manager should be, Relationships with Manager,Relationships with Team members, Difficult scenario encoutered in the past, how did I overcome an unwinable situation.

2. Technical Questions

He took a deep dig at my projects and asked me everything around my resume, after that he asked me a coding Question
He then asked me a SQL query on window functions and dense rank
In Spark in he asked me around the fundamentals and implementation of Broadcast Variables.

3. Maximum In Sliding Windows Of Size K
Moderate
20m average time
80% success
0/80
Asked in companies
FlipkartMicrosoftAdobe

Given an array/list of integers of length ‘N’,...

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