I applied through other source. The process took 3 weeks. I interviewed at Whatfix (South Twenty Four Parganas) in Jun 2022
Interview
Had 3 rounds. Used to get call immediately after every round from HR related to feedback if positive. Unfortunately, 3rd & final round answers might not have been upto the mark from interviewer expectations. But HR has till date not given feedback of same even after calling/mailing him. This ghosting by HR shows professionalism level of company.
From previous conversation from HR, base salary is less compared to what given by other startups in Bengaluru. Also ESOPs component is not meant fir every hire. HR was kind of shy in explaining salary component, but very active in knowing current company salary details. Best is to avoid interviewing in this unprofessional startup.
Interview questions [1]
Question 1
- 1st Round
- Write singleton class structure with multithreading scenarios in mind
- Given binary tree with parents record in DB, write query to fetch root node, intermediate nodes and leaf nodes
- Given 2D Matrix Array with 1s and 0s, fan out 1 on left, right, bottom, top if present in matrix and do it in O(n x m) time complexity without using Space of O(n x m)
- Basics of Kafka , Partition, offsets, consumer groups and how Kafka is used as message broker
- 2nd Round
- Getting dump of 100 log files daily with 1 GB data each named as log1, log2...etc....given an instance of time of a day find which log file will have logs related to that timestamp in efficient way
- Directory of phone numbers is given of billion records with duplicate entries how do you store it efficiently (Hint: Set and Trie)
- 3rd Round
- Existing Project Architecture Explanation
- Modified ingestion to use real time data instead of once a time loading/update of data - Modify architecture
- Basics of SQL, NoSQL DBs, Internals of Indexing, how data inside index tables is stored by DB Engines
- Indexing really improves performance ? Composite Indexing is overhead or optimal ?
