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HALODOC Senior Data Scientist Interview Questions and Answers
HALODOC Senior Data Scientist Interview Experiences
1 interview found
Anonymous
I applied via Referral and was interviewed in Feb 2020. There were 5 interview rounds.
Interview Questionnaire
2 Questions
- Q1. Was asked to code a tweet classifier.
- Q2. Was asked to design a recommendation engine
Interview Preparation Tips
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Pratik Chaudhari
I applied via Referral
Interview Preparation Tips
Experience: Sent resume to an HR through Linkedin and got the call for interview
Round: Technical Interview
Experience: Had 3 rounds of technical interviews with Product Owner, Product Manager and VP Product. Most of the questions were related to maths, statistics and a few on machine learning. Even though I did not have much background on these, I was asked to give my inputs and try to find a solution. We discussed recommendation engines for Quora, Linkedin and e-commerce websites. Then they asked me how can we remove the bias that comes in the practo ratings of the doctors due to feedback from various channels. How can we identify if the customer is booking an appointment by looking at reviews or ratings? How can we identify spam reviews before publishing them? How can we build a product which can help users write a better quality review? Most of the questions were related to data science and how we can improve the products using data. The data analyst role for which I was being interviewed, was a first of its kind role in Practo. The JD was to basically work with the product team and help them in improving products, building new features etc. using data science/ data analytics.
Skills: Product Sense, Attitude, Data Science, Data Analysis, Basics Of Machine Learning
College Name: IIT Madras
Motivation: being the leader of the healthcare industry, high growth startup, opportunity to solve interesting problems using data
Amit Bansal
I applied via Referral and was interviewed in Aug 2024. There was 1 interview round.
I was asked question on sliding window on finding the largest subarray with all distinct numbers. The interviewer was very helpful.
Interview Questionnaire
2 Questions
- Q1. Find the type of data structure based on the operation performed. Given the order of insertion and deletion. Find whether this operation corresponds to stack/queue /priority queue
- Ans.
Identify data structure based on insertion and deletion order
If insertion and deletion follow LIFO order, it is a stack
If insertion follows FIFO order and deletion follows LIFO order, it is a queue
If insertion and deletion follow priority order, it is a priority queue
- Q2. Find maximum element in an array in less dhan O(N)
- Ans.
Find maximum element in an array in less than O(N)
Use divide and conquer approach
Compare maximum of left and right subarrays
Recursively find maximum element
Interview Preparation Tips
Skills evaluated in this interview
I applied via Approached by Company and was interviewed in Feb 2022. There were 2 interview rounds.
(1 Question)
- Q1. Basic questions of related role.
(1 Question)
- Q1. Deeper technology-related questions and simple coding
Interview Preparation Tips
They took 2 rounds within 2 weeks, all goes well. after that HR confirms that you cleared the round and someone will call you for a final discussion. Post that they never reply. and when you call back to HR every time he says "I will check and let you know" but never ever did it for months.
Don't waste our time if you are not serious about hiring.
I applied via LinkedIn and was interviewed before Nov 2020. There was 1 interview round.
Interview Questionnaire
1 Question
- Q1. SQL joins, python basics, resume based,
Interview Preparation Tips
(2 Questions)
- Q1. Reverse nodes in groups of K
- Ans.
Reverse nodes in groups of K
Create a function that takes a linked list and an integer K as input
Reverse the nodes in groups of K
Return the modified linked list
- Q2. Design sliding window rate limiter
- Ans.
A sliding window rate limiter limits the rate of incoming requests within a sliding time window.
Define a time window and a maximum number of requests allowed within that window
Track the number of requests received within the window using a data structure like a queue or circular buffer
Reject requests that exceed the maximum allowed within the window
Slide the window forward as time passes, removing requests that fall ou...
Interview Preparation Tips
They out source the interview process to some shit company called Interview vector and they expect you to solve a hard question as well as LLD in 60 mins. I mean common on man, that's totally unfair. I would have been much fair if it was a easy to medium question. Very poor interviewing skills and they just want a specific answer. Very narrow minded Intivewers from interviewr vector.
Wasted my time.
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Jun 2024. There was 1 interview round.
The coding test was divided in 4 sections:
1> Java and SpringBoot multiple choice questions
The question topics included, multihreading, springboot context, security
2> Leetcode style program question 1 - Easy
3> Leetcode style program question 2 - Medium
Length of longest consecutive ones by at most one swap.
4> Sql query question
(5 Questions)
- Q1. Basic Excel Questions
- Q2. Medium and Basic SQL Questions
- Q3. Resume based Question
- Q4. Case Study Questions
- Q5. Questions on Project
Good team lead. And time management
Wherehouse operation manage ..invard . Outward ..and closely mercury cansole
Interview Preparation Tips
- Wherehouse operation manage
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