- Coding round 1
you're given k v pairs
funA: ['int','bool']
funB: ['int','int']
and queries like ['int','int']
return all functions that match the description
follow-up
you're also given a flag is variadic
funA: ['int','bool'] , isVariadic: true
funC: ['int','int'] , isVariadic: false
funB: ['int','int','int'] isVariadic: true
and queries like ['int','int']
return all functions that match the description
e.g
['int','int'] = funC
['int','int','int', 'int'] = funB
- Coding Round 2
You're given a time based kv store,
window = 5 sec
time
1 put("foo", 1)
3 put("bar", 2)
4 get("foo") -> 1
5 getAverage() -> 1.5
7 get("foo") -> -1 (since key expired)
8 getAverage() -> 2 (since foo expired)
expectation was to optimize get() and getAverage()
- Coding Round 3
write code for a sudoku validator
- needs to mem efficient so use map to store counts
- print row/col/box as well where sudoku is not valid
- have a check to see if number is between 1-9
follow-up: write code for a sudoku solver
- normal as leetcode use backtracking
- Round 4 (Operations at scale)
questions around scaling
-
how to detect bottlenecks in system and how to remedy them
- talked about load balancers, access logs of LB, multi region LB and regional routing
- talked about slow query detection and remedies, db load analysis and master slave archi with replica lag b/w master slave
- talked about IAC like terraform to maintain infra and deploy multi-region
- talked about splitting monolith to microservices and how to go about it
- each question focuses on hld first then followed by how to actually do it in cloud
-
Round 5
HM Round
behavioural questions
- Why Confluent?
- Ever had a disagreement with a teammate, how did you handle it?
- Most challenging work you ever did
- Why leave your current company?
- Discuss a time you introduced a bug in the system, how did you identify/fix it?
- Discuss 1 strength as an engineer (technical strength)
- Have your ever dealt with customers, how did you go about it?
