Crushing the Google L6 Staff Engineer Interview: Insights from Hims & Hers

Software Engineering
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hims & hers | Software Engineer | Interview Experience

Interview Date: Not specified
Result: Pass
Difficulty: Average

Interview Process

The interview consisted of 5 rounds completed in one day, focusing on system design, coding, leadership, and a deep dive into past projects. The rounds were structured as follows:

  1. System Design #1 (60 min) - Focused on designing a large-scale distributed Rate Limiter service.
  2. System Design #2 (60 min) - Involved designing a global real-time notification system (Push + Email + SMS).
  3. Coding (45 min) - Medium difficulty coding questions.
  4. Leadership / Googliness (45 min) - Explored leadership qualities and decision-making processes.
  5. Past Project Deep Dive (45 min) - Discussed the candidate’s most complex system and design decisions.

Technical Questions

  • System Design (Infra / Scale): Design a large-scale distributed Rate Limiter service.

    • Topics included: requirements clarification, high-level architecture, hot key issues, consistency trade-offs, and failure handling.

  • System Design (Product/User Side): Design a global real-time notification system.

    • Key points focused on: user size, multi-channel fallback, de-duplication, and data modeling.

  • Coding: Medium difficulty coding problems.

  • Leadership Questions: Discussed technical decision-making, handling disagreements, incident management, and influencing teams without direct reporting lines.

  • Past Project Deep Dive: Analyzed a complex system design, focusing on decisions made and reflective skills.

Tips & Insights

  • Emphasize ownership and decision-making in ambiguous situations.
  • Be prepared to discuss trade-offs and failures proactively.
  • Use the STAR method to articulate experiences effectively.
  • Highlight reflective skills and the ability to learn from past decisions.