2024 Credit Karma - Senior Onsite

Credit Karma

Please do not waste your time with Credit Karma. I was told they wanted to move forward and give me an offer for Senior Software Engineer II. Then every single hiring manager told me that they wanted to move forward with an internal candidate instead. The recruiter has stopped responding to me over a month ago. I reapplied to some of the open engineering positions and I even contacted recruiters on LinkedIn saying that I had received a green light to team match. Some recruiters said they'd look into it, but then they stopped responding as well.

All coding happens in CoderPad.

Phone Screen:

Your team is building a mathematical expression parser. You will get an expression like "1 + 2 * 5" and you should return 11.

Follow up, what if we introduce parentheses?

Follow up, what if we introduce unary operations like (1 + ++4) should return 6.



This is very easy. It's a LeetCode question.



Question:
Given an account defined as:

Account
  balance (decimal number)
  name: (string)
  accountType (eg credit card, checking, savings) #ENUM / str
  openedDate: (time stamp) # int
for example
  balance: 1000.00
  name : Chase Freedom
  accountType : credit card
  Opened Date: 6/19/2004
Compare 2 sets of accounts for a user - one set from the current month, and one set from the prior month, eg:

previous: [ { "balance":2000.0, "name":"Chase Freedom", "accountType":"credit_card", "openedDate":1111680799 }, { "balance":100.0, "name":"Citibank", " accountType":"credit_card", "openedDate":1000680799 } ]
current: [ { "balance":1000.0, "name":"Chase Freedom", "accountType":"credit_card", "openedDate":1111680799 }, { "balance":500.0, "name":"American Express", "accountType":"credit_card", "openedDate":1222680799 }
* print out "<name>: <balance change>" for accounts that are in both months, eg "Chase Freedom: -1000"
* print out "<name>: added" for those that are in the current month but not the previous month, eg "American Express: added"
* print out "<nam

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游客，您好！
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  'name': 'Chase Freedom',
        'openedDate': 1111680799},
    {
        'accountType': 'credit_card',
        'balance': 500.0,
        'name': 'American Express',
        'openedDate': 1222680799
    }
]

Follow ups:

What if this became an API where we received two massive lists of json objects? Design a data model.
What if we had a REALLY long list of jsons, eg an array of 12 list for a year and we want to compare them month to month?
(keep setting currentAccount = prevAccount)
"""


===================

Hiring Manager:

Talk about my technical expertise and technologies that I've used before.

Talk about your favorite/most challenging project.

Discuss the tradeoffs and design decisions you made. Why pick a certain programming language to do X?

What's a project that didn't go so well?

What makes you tick in software engineering? What makes you excited?

======================


System Design:

Design AirBnb - book accommodations and more requirements.

Support reviews. 1 person leaves 1 review for 1 accommodation.

The design is very straightforward. Have some tables for the user metadata. Have a table for the reservations. Make sure to ask about how payments should work.

这家的HR很不professional。。VO约面试一周了不回复，其实就是fill了想ghosting吧。。