capitalone | Software Engineer | Interview Experience
Interview Date: Not specified
Result: Not specified
Difficulty: Not specified
Interview Process
The interview process began with HR reaching out. There were four online assessment (OA) questions: one easy, one slightly harder, one similar to LeetCode problem 1861, and a fourth question involving calculating the length of a list of intervals. The Power Day experience was manageable, with the interviewer not making the questions overly difficult and mostly sticking to original questions.
Technical Questions
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Object-Oriented Design (OOD): Design a bank with three functionalities:
- Create an account and deposit an amount to the account.
- Transfer between accounts.
- Retrieve the top K activities.
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High-Level Design (HLD): Design a banking system that supports:
- Creating different types of accounts (savings, checking, auto loan).
- Transferring between accounts and making payments (e.g., Zelle transfers).
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Behavioral Question (BQ): Discuss a conflict faced, something new learned, and a change in priority.
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Case Study: Discuss the challenges and benefits of virtual credit cards and why Capital One would want to promote them. Additionally, validate given virtual numbers according to specified rules and fix bugs in a provided piece of code.
Tips & Insights
Be prepared to discuss both technical design and behavioral aspects during the interview. Familiarize yourself with common design patterns and be ready to articulate your thought process clearly.