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Google·Software Engineer·Onsite - System Design / Architecture·Senior

Senior
May 2026

Summary

Google SWE interview with a big open-ended design question about building something for basically everyone. No coding, just a long conversation about product thinking and how you'd handle scale and inclusion from the start.

Questions Asked (1)

Q1

You're building a product that will be used by essentially all or nearly all users. Walk through how you'd approach problem definition, user research, scope, prioritization, scalability, and accessibility.

Product Sense & IdeationProduct StrategySystem Design
Author's notes

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Suggested Approach

Start by clarifying the product and its core user problem, then walk through a structured process covering problem definition, user research, scope, prioritization, scalability, and accessibility. Emphasize trade-offs and how you'd validate decisions with data and user feedback at each stage.

Pro tip: Anchor your answer in a specific product example (e.g., Google Search or Maps) to make your reasoning concrete and show you understand Google's scale. Highlight how you'd balance technical constraints with user needs, especially for accessibility and internationalization.

1. Define the Problem and Goals

Clearly articulate the user problem, business goals, and success metrics. Identify who the users are and what 'nearly all users' implies for diversity of needs.

2. Conduct User Research

Use qualitative and quantitative methods to understand user needs, pain points, and contexts of use, including edge cases and underrepresented groups.

3. Scope and Prioritize Features

Define an MVP based on impact and effort, then prioritize features using frameworks like RICE or Kano. Consider dependencies and technical feasibility.

4. Design for Scalability and Accessibility

Architect the system to handle massive scale (e.g., distributed systems, caching) and ensure accessibility (WCAG compliance, assistive technologies) from the start.

5. Iterate and Validate

Launch, measure against success metrics, gather feedback, and iterate. Plan for continuous improvement and adaptation to user needs.

Key Points to Mention

  • User personas and segmentation to capture diverse needs
  • Accessibility standards (WCAG) and inclusive design principles
  • Scalability considerations: horizontal scaling, load balancing, caching, and database sharding
  • Prioritization frameworks (e.g., RICE, MoSCoW) and trade-off analysis
  • Metrics for success: adoption, engagement, performance, and accessibility audits
  • Iterative development and feedback loops (A/B testing, user testing)

AI-generated suggestions, not part of the candidate's original notes. May be inaccurate — verify before relying on them.