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Visa Senior Data Scientist Interview Questions and Answers

Updated 2 Jul 2024

Visa Senior Data Scientist Interview Experiences

1 interview found

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Details about past projects
  • Q2. Details about latest project

Interview Preparation Tips

Interview preparation tips for other job seekers - Be good in comm skills

Interview questions from similar companies

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Referral and was interviewed in Jul 2024. There were 2 interview rounds.

Round 1 - Coding Test 

It was about DS Algo and Java garbage collection,multithreading

Round 2 - Technical 

(2 Questions)

  • Q1. Low level design of rate limiter
  • Ans. 

    Rate limiter is a system that controls the rate of traffic sent or received by a network interface.

    • Implement a token bucket algorithm to track and limit the rate of requests

    • Use a sliding window algorithm to track the number of requests within a specific time frame

    • Consider using a distributed rate limiter for scalability and fault tolerance

  • Answered by AI
  • Q2. Springboot basics, java basics, future interfaces, basic sql queries

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
Selected Selected
Round 1 - Technical 

(1 Question)

  • Q1. Micro services architecture
Round 2 - Technical 

(1 Question)

  • Q1. Java ,springboot
Round 3 - Technical 

(1 Question)

  • Q1. Springboot and java questions
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(4 Questions)

  • Q1. What are SSL certificates?
  • Ans. 

    SSL certificates are digital certificates that authenticate the identity of a website and encrypt information sent to the server.

    • SSL certificates ensure secure communication between a user's browser and a website's server.

    • They use encryption to protect sensitive data such as login credentials, credit card information, etc.

    • SSL certificates are issued by Certificate Authorities (CAs) and contain information about the web...

  • Answered by AI
  • Q2. What are the ways to secure REST API?
  • Ans. 

    Securing REST API involves using authentication, authorization, encryption, and input validation.

    • Use authentication methods like OAuth, JWT, or API keys to verify the identity of clients.

    • Implement authorization to control access to resources based on user roles and permissions.

    • Encrypt data transmission using HTTPS to protect sensitive information from being intercepted.

    • Validate and sanitize input data to prevent inject

  • Answered by AI
  • Q3. What if your application is down for 1 hour in one site in prod?
  • Ans. 

    I would investigate the root cause, work on fixing the issue, and implement measures to prevent it from happening again.

    • Investigate the root cause of the downtime, such as network issues, server failures, or software bugs

    • Work on fixing the issue promptly to minimize impact on users and business operations

    • Implement measures to prevent similar downtime in the future, such as redundancy, monitoring, and failover mechanism

  • Answered by AI
  • Q4. How do you make sure a throttling system process dropped messages from a slow downstream service?
  • Ans. 

    Implement a throttling system to handle dropped messages from a slow downstream service.

    • Implement a queue to store messages from the downstream service.

    • Set a maximum queue size and drop messages when the queue is full.

    • Use a timestamp to track when messages were received and process them in order.

    • Implement a retry mechanism to reprocess dropped messages after a certain time.

    • Monitor the queue size and processing speed to

  • Answered by AI

Skills evaluated in this interview

Interview experience
1
Bad
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(3 Questions)

  • Q1. System design basics
  • Q2. Java 8 stream api code
  • Q3. Current project
Round 2 - Technical 

(2 Questions)

  • Q1. Only arrogance related stuff
  • Q2. Only arrogance related stuff happened

Interview Preparation Tips

Interview preparation tips for other job seekers - Too much arrogant people .
Not at all talented asked me everything theoretical ,no evaluation from logic building or coding perspective just some random stupid google questions based upon their own internal project work .
I am not happy with the style of evaluation also interviewer was too much arrogant and rude .never met these kind of people.
I do too belongs to equal product based,good technical background but never seen anyone rude to this level.
Interview experience
5
Excellent
Difficulty level
-
Process Duration
2-4 weeks
Result
-

I applied via Recruitment Consulltant and was interviewed before Oct 2022. There were 4 interview rounds.

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 Resume tips
Round 2 - Coding Test 

Java Coding and Data Structure

Round 3 - One-on-one 

(1 Question)

  • Q1. Discussion around CV
Round 4 - HR 

(2 Questions)

  • Q1. Offer related and work location
  • Q2. Nothing specific
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I applied via Referral and was interviewed in Jun 2024. There was 1 interview round.

Round 1 - Coding Test 

Asked to do coding for RDBMS using any programing language

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

(1 Question)

  • Q1. Machine coding: Design in-memory document search
Round 2 - Technical 

(1 Question)

  • Q1. HLD: Design a ad-click aggregation service
  • Ans. 

    Design an ad-click aggregation service for tracking and analyzing ad clicks.

    • Use a distributed system to handle high volume of ad click data

    • Implement real-time processing for immediate insights on ad performance

    • Utilize a database to store aggregated ad click data for reporting and analysis

  • Answered by AI

Skills evaluated in this interview

Interview experience
1
Bad
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. Design a in-memory cache
  • Ans. 

    Design a high-performance in-memory cache system for storing and retrieving data efficiently.

    • Use a hash table or a key-value store to store data in memory

    • Implement caching strategies like LRU (Least Recently Used) or LFU (Least Frequently Used) to manage cache eviction

    • Consider using a distributed cache for scalability and fault tolerance

    • Optimize cache size and expiration policies based on the application's data access

  • Answered by AI

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

(1 Question)

  • Q1. Rating Service Low level design
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Visa Interview FAQs

How many rounds are there in Visa Senior Data Scientist interview?
Visa interview process usually has 1 rounds. The most common rounds in the Visa interview process are Technical.
How to prepare for Visa Senior Data Scientist interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at Visa. The most common topics and skills that interviewers at Visa expect are SQL, Data Mining, Data Science, Python and Big Data.

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Visa Senior Data Scientist Interview Process

based on 1 interview

Interview experience

4
  
Good
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Visa Senior Data Scientist Salary
based on 17 salaries
₹28 L/yr - ₹60 L/yr
58% more than the average Senior Data Scientist Salary in India
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