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eBay·Software Engineer·Onsite - Behavioral / Leadership·Senior

Senior
Jun 2026

Summary

Prepped for a senior-level loop at eBay focused almost entirely on leadership and scope. Three questions, all behavioral, all expecting you to have a real story ready with numbers and trade-offs attached.

Questions Asked (3)

Q1

Tell me about a time you influenced a major decision.

Stakeholder ManagementCross-functional Alignment
Author's notes

This one tripped me up a bit because my first instinct was to talk about a technical call I made solo, which isn't really influence.

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AI HintsAI Generated

Suggested Approach

Use the STAR method to describe a specific instance where you influenced a major technical or product decision. Focus on how you gathered data, built a compelling case, and navigated stakeholder dynamics to drive alignment and adoption.

Pro tip: Quantify the impact of the decision (e.g., performance improvements, cost savings, revenue impact) and highlight how you tailored your communication to different stakeholders (e.g., engineers, product managers, executives).

1. Set the Context

Briefly describe the situation, the decision at stake, and why it was important. Mention the stakeholders involved and the potential impact.

2. Identify the Need for Influence

Explain why your perspective differed from the status quo or others' opinions, and why you felt compelled to advocate for a change.

3. Build Your Case

Describe how you gathered evidence (data, prototypes, user feedback) and crafted a compelling argument. Highlight any cross-functional collaboration.

4. Navigate Stakeholder Dynamics

Explain how you communicated your case to different stakeholders, addressed concerns, and built consensus. Mention any compromises or iterations.

5. Achieve Alignment and Measure Impact

Describe the outcome: how the decision was made, your role in it, and the measurable results. Reflect on lessons learned.

Key Points to Mention

  • Use of data and metrics to support your argument
  • Cross-functional collaboration and stakeholder alignment
  • Communication strategies tailored to different audiences
  • Handling objections and building consensus
  • Quantifiable impact of the decision (e.g., performance, cost, revenue)
  • Lessons learned and how you applied them in future situations

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

Q2

Describe a project where you had significant impact or worked at a large scale.

Technical Trade-offsCross-functional Alignment
Author's notes

Easier to prep but easy to fumble if you just narrate what the project did instead of what you specifically did.

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AI HintsAI Generated

Suggested Approach

Choose a project that demonstrates both technical depth and cross-functional collaboration, ideally with quantifiable impact at scale. Structure your answer using a clear narrative arc: context, challenge, your specific actions, and measurable results. Emphasize the trade-offs you made and how you aligned with other teams to achieve success.

Pro tip: Quantify impact in terms of business metrics (e.g., latency reduction, cost savings, revenue increase) and highlight how your work enabled other teams or scaled beyond your immediate scope. This shows you understand eBay's platform mindset.

1. Set the Context

Briefly describe the project, its scale (e.g., users, transactions, data volume), and why it mattered to the business. Mention the teams involved and your role.

2. Define the Challenge

Explain the technical and organizational hurdles, such as performance bottlenecks, legacy systems, or misaligned priorities across teams. Highlight why it was non-trivial.

3. Detail Your Actions

Walk through the key decisions you made, including trade-offs (e.g., consistency vs. availability, build vs. buy) and how you drove cross-functional alignment (e.g., design reviews, stakeholder meetings).

4. Quantify the Impact

Share concrete results: metrics like reduced latency, increased throughput, cost savings, or revenue impact. If possible, relate it to eBay's scale (e.g., millions of users).

5. Reflect and Learn

Summarize what you learned, how you grew, and how the experience prepares you for future challenges at eBay. Keep it concise and forward-looking.

Key Points to Mention

  • Scale metrics (e.g., requests per second, data volume, number of users)
  • Technical trade-offs (e.g., consistency vs. availability, latency vs. cost)
  • Cross-functional collaboration (e.g., working with product, data science, or infrastructure teams)
  • Quantifiable business impact (e.g., revenue increase, cost reduction, efficiency gains)
  • Alignment with eBay's values or platform goals (e.g., scalability, reliability, customer focus)
  • 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.

Q3

What is the most technically complex problem you've tackled in your career?

System DesignTechnical Trade-offsRoot Cause Analysis
Author's notes

Genuinely my favorite of the three to answer.

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AI HintsAI Generated

Suggested Approach

Choose a problem that genuinely challenged you technically, ideally involving system design or performance at scale. Structure your answer using a clear narrative: context, problem, investigation, solution, and impact. Focus on your specific contributions and the trade-offs you made, quantifying results where possible.

Pro tip: Emphasize the trade-offs you considered and why you chose your approach over alternatives—this shows engineering maturity. Also, briefly mention what you learned or would do differently, demonstrating growth.

1. Set the Context

Briefly describe the system, your role, and why the problem was technically complex (e.g., scale, constraints, legacy code).

2. Define the Problem

Clearly state the challenge, including symptoms, impact, and any specific requirements or constraints.

3. Explain Your Approach

Detail your investigation, root cause analysis, and the solution design. Highlight technical decisions and trade-offs.

4. Discuss Implementation and Challenges

Describe how you executed the solution, any obstacles you overcame, and how you validated the fix.

5. Share Results and Learnings

Quantify the impact (e.g., performance improvement, cost savings) and reflect on what you learned or would do differently.

Key Points to Mention

  • Scale and performance metrics (e.g., requests per second, data volume, latency)
  • Root cause analysis techniques (e.g., profiling, logging, distributed tracing)
  • System design principles (e.g., caching, sharding, load balancing, consistency models)
  • Trade-offs made (e.g., consistency vs. availability, latency vs. cost, build vs. buy)
  • Collaboration and communication with cross-functional teams
  • Quantifiable impact (e.g., reduced latency by X%, saved $Y, improved reliability)

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