Software Engineer · Full Journey · Multiple Types

Rippling — Software Engineer ❌ Failed

Level: Unknown Level

Round: Full Journey · Type: Multiple Types · Difficulty: 5/10 · Duration: 300 min · Interviewer: Unfriendly

Topics: System Design, Data Aggregation, Mobile Events, Browser Events, Trade-offs, Data Structures, Caching, Coding

Location: San Francisco Bay Area

Interview date: 2025-12-22

Got offer: False

Summary

Round 1: Phone Screen

Question: A variation of a data aggregation problem involving aggregating ad clicks, joining with other data sources, and discussing trade-offs between request volume and latency for events sent from mobile apps and browsers.

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Round 2: Hiring Manager

Question: Deep dive into a past project, including a PPT presentation and discussion of the most challenging aspects. I asked about the engineering culture.

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Round 3: Onsite Coding

Question: An expense problem I found online, involving individual expenses and then aggregation per trip or per category. I didn't finish the per-trip aggregation.

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Round 4: Onsite Coding

Question: Article thumbs up/down implementation, requiring O(1) time complexity for tracking the last three flips. I spent too much time on it and had debugging issues.

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Round 5: Onsite System Design

Question: Simplified news app design, focusing on high user volume and caching strategies.

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Details

Preparation Tips & Key Takeaways

What I Learned

• Practicing system design for high-volume applications is crucial.
• Time management is essential in coding interviews, especially for follow-up questions.

Recommended Preparation

Coding Practice

• Focus on problems requiring O(1) time complexity.
• Practice implementing data structures efficiently.

System Design

• Review caching strategies for high-volume applications.
• Study system design patterns for news feed or content delivery systems.

Behavioral Questions

• Prepare for project deep dives with a clear presentation.
• Practice discussing trade-offs in system design.

Resources I Recommend

• Online resources for system design interview preparation
• Coding platforms to improve time management skills

Common Pitfalls to Avoid

• Failing to complete follow-up questions in coding rounds.
• Poor time management during coding interviews.