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Amazon·Software Engineer·Onsite - Behavioral / Leadership·Junior

Junior
Jul 2026

Summary

Behavioral round at Amazon for a software engineering internship. Three questions, all centered on how you handle complexity and failure. Nothing too surprising but the failure question tripped me up more than I expected.

Questions Asked (3)

Q1

Tell me about the most complex project you've worked on. How did you weigh the different options available to you?

Technical Trade-offsAdaptability & Ambiguity
Author's notes

I rambled.

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AI HintsAI Generated

Suggested Approach

Choose a project that genuinely had multiple viable technical paths and significant complexity, then walk through your decision-making process using a structured framework like STARR. Focus on how you identified trade-offs, gathered data, and made a decision that balanced customer needs, technical constraints, and business goals.

Pro tip: Amazon values 'Customer Obsession' and 'Bias for Action'—explicitly tie your trade-off analysis to customer impact and show that you made a decision with incomplete information rather than waiting for perfect data.

1. Set the Context

Briefly describe the project, your role, and why it was complex (e.g., scale, ambiguity, cross-team dependencies). Keep it concise to leave time for the trade-off analysis.

2. Outline the Options

Present 2-3 distinct technical approaches you considered, such as different architectures, technologies, or algorithms. Explain the pros and cons of each in terms of performance, cost, maintainability, and time-to-market.

3. Explain Your Decision Process

Describe how you evaluated the options: what data you gathered, who you consulted, and what criteria mattered most (e.g., customer impact, scalability, team expertise). Highlight any experiments or prototypes.

4. Describe the Outcome and Learnings

Share the results of your decision, including metrics if possible. Reflect on what you learned and how you would approach similar trade-offs differently in the future.

Key Points to Mention

  • Quantifiable complexity (e.g., number of users, data volume, latency requirements, team size)
  • Specific trade-offs (e.g., consistency vs. availability, build vs. buy, monolith vs. microservices)
  • Data-driven decision-making (e.g., benchmarks, cost analysis, user feedback)
  • Stakeholder alignment and communication (e.g., working with product managers, senior engineers)
  • Customer impact and business value of the chosen solution
  • Lessons learned and how you applied them to future projects

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

Q2

Describe a project that went badly or failed. What happened and what did you take away from it?

Adaptability & AmbiguityRoot Cause Analysis
Author's notes

Genuinely the hardest one.

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AI HintsAI Generated

Suggested Approach

Choose a real project that failed or went badly, but focus on your specific actions and learnings rather than blaming others. Use the STAR method to structure your answer, and emphasize how you applied the lessons to future projects to prevent similar issues.

Pro tip: Amazon values Ownership and Learn and Be Curious. Show that you took full ownership of the failure, including your own mistakes, and describe the concrete steps you took to improve. Avoid saying the project failed due to external factors beyond your control.

1. Set the Context

Briefly describe the project, your role, and the expected outcome. Keep it concise to leave time for the failure and learnings.

2. Explain What Went Wrong

Clearly state the failure or negative outcome, including the impact on the team, customers, or business. Be honest and specific.

3. Analyze Root Causes

Discuss the underlying reasons for the failure, including your own decisions or actions. Show self-awareness and avoid blaming others.

4. Share Key Learnings

Articulate the most important lessons you took away from the experience, focusing on both technical and behavioral insights.

5. Demonstrate Application

Give a concrete example of how you applied these learnings to a subsequent project, resulting in a better outcome.

Key Points to Mention

  • Ownership of the failure, including your specific mistakes
  • Root cause analysis that goes beyond surface-level explanations
  • Concrete lessons learned that changed your approach
  • Specific actions taken to prevent recurrence
  • Positive outcome or improvement in a later project
  • Alignment with Amazon Leadership Principles (e.g., Ownership, Learn and Be Curious, Deliver Results)

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

Q3

What would you do if you realized mid-project that your current approach wasn't the right one?

Adaptability & AmbiguityStakeholder Management
Author's notes

Felt more comfortable here.

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AI HintsAI Generated

Suggested Approach

Use a structured story (e.g., STAR) to show you recognized the issue early, assessed impact, and took decisive action to pivot while keeping stakeholders informed. Emphasize data-driven decision-making and Amazon's Leadership Principles like 'Bias for Action' and 'Deliver Results'.

Pro tip: Show that you not only fixed the immediate problem but also implemented a process to prevent similar issues, demonstrating ownership and long-term thinking.

1. Recognize and Validate

Identify the signals that the approach isn't working (e.g., missed milestones, technical debt, feedback) and validate with data or team input.

2. Assess Impact and Options

Evaluate the potential consequences of continuing vs. pivoting, and outline alternative approaches with pros and cons.

3. Communicate and Align

Proactively inform stakeholders (e.g., product manager, tech lead) about the issue, proposed pivot, and revised plan to get buy-in.

4. Execute the Pivot

Implement the new approach, possibly in phases, while monitoring progress and adjusting as needed.

5. Learn and Improve

Conduct a retrospective to capture lessons learned and update processes to avoid similar pitfalls in the future.

Key Points to Mention

  • Data-driven decision making: use metrics or evidence to support the need for a change.
  • Stakeholder communication: keep everyone informed and involved in the decision.
  • Bias for Action: act quickly to mitigate risks and deliver results.
  • Ownership: take responsibility for the mistake and focus on solutions.
  • Adaptability: demonstrate flexibility and willingness to change course.
  • Retrospective and process improvement: show you learn from setbacks.

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