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Uber·Software Engineer·Technical Phone Screen·Senior

Senior
May 2026

Summary

A deep-dive project interview at Uber for a software engineering role, essentially 30 minutes of someone poking holes in one thing you've built. No warmup, no softballs.

Questions Asked (7)

Q1

Walk me through a project you worked on: what was the problem you were solving and how did you define it?

Product Sense & IdeationAdaptability & Ambiguity
Author's notes

This is where I fumbled a bit at the start.

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AI HintsAI Generated

Suggested Approach

Choose a project where you played a key role in defining the problem, not just solving it. Use a structured narrative (e.g., STAR) to show how you uncovered the underlying need, framed it with data and user impact, and aligned stakeholders. Emphasize the ambiguity you navigated and the product sense you applied to scope the problem effectively.

Pro tip: At Uber, interviewers value engineers who think like product owners. Show that you proactively identified the problem by digging into metrics, user feedback, or system pain points, and that you defined success criteria before jumping to solutions.

1. Set the Context

Briefly describe the project, your role, and the team. Mention the product area and why it mattered to the business or users.

2. Identify the Problem

Explain how you discovered the problem—through data analysis, user research, or operational pain. Highlight the symptoms and their impact.

3. Define the Problem

Describe how you framed the problem: what was the core user or business need? What constraints existed? How did you prioritize?

4. Align and Validate

Show how you got buy-in from stakeholders and validated your problem definition with data or user feedback. Mention any trade-offs.

5. Outcome and Learnings

Summarize the solution and its impact, then reflect on what you learned about problem definition and ambiguity.

Key Points to Mention

  • How you used data or user research to uncover the problem
  • The ambiguity you faced and how you narrowed it down
  • Stakeholder alignment and communication during problem definition
  • Trade-offs considered when scoping the problem
  • Success metrics defined before solutioning
  • Impact of the project and lessons learned for future work

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

Q2

What other approaches did you consider before going with the one you chose, and why did you rule them out?

Technical Trade-offs
Author's notes

I had a decent answer here but I think I undersold the alternatives.

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AI HintsAI Generated

Suggested Approach

Choose a specific technical decision you made where you evaluated multiple options, and walk through the alternatives you considered, the criteria you used to evaluate them, and the concrete reasons you ruled them out. Be honest about trade-offs and show that your choice was deliberate and data-driven, not arbitrary.

Pro tip: Frame your decision in terms of business and user impact, not just technical elegance—Uber values engineers who optimize for real-world outcomes like latency, cost, and scalability. Also, briefly mention what you'd do differently in hindsight or under different constraints to show self-awareness and adaptability.

1. Set the context

Briefly describe the problem you were solving, the constraints (e.g., scale, latency, team expertise), and why a decision was needed.

2. List the alternatives

Name 2-3 other approaches you seriously considered, showing you explored the solution space beyond the obvious.

3. Explain your evaluation criteria

State the factors you used to compare options, such as performance, maintainability, cost, time-to-market, or team familiarity.

4. Justify why you ruled them out

For each alternative, give a specific reason it fell short against your criteria, using data or concrete examples where possible.

5. Conclude with the chosen approach and outcome

Summarize why your final choice best met the criteria and briefly mention the results or lessons learned.

Key Points to Mention

  • Specific technical alternatives (e.g., different database, architecture pattern, or algorithm) and why they didn't fit.
  • Quantitative or qualitative trade-offs (e.g., latency vs. consistency, development speed vs. long-term maintainability).
  • Constraints that influenced the decision, such as Uber's scale, real-time requirements, or existing infrastructure.
  • How you validated your choice (e.g., prototyping, benchmarking, or consulting with senior engineers).
  • The outcome of your decision and any adjustments made later.
  • Self-reflection: what you learned and how you'd approach a similar decision differently now.

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

Q3

What were the key technical decisions and tradeoffs in the project?

Technical Trade-offsSystem Design
Author's notes

This is where the conversation got interesting.

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AI HintsAI Generated

Suggested Approach

Choose a project where you made significant technical decisions, and structure your answer around the problem, the options considered, the tradeoffs evaluated, and the rationale for the final choice. Emphasize the impact of your decisions on scalability, reliability, and maintainability, aligning with Uber's engineering challenges.

Pro tip: Quantify the tradeoffs with concrete metrics (e.g., latency, cost, throughput) and acknowledge any downsides or lessons learned, showing you think like a senior engineer who balances business and technical needs.

1. Set the context

Briefly describe the project's goal, your role, and the scale or constraints that made the technical decisions non-trivial.

2. State the key decision

Clearly articulate the main technical decision you faced, such as choosing between a monolithic vs. microservices architecture or SQL vs. NoSQL.

3. Present alternatives and tradeoffs

Discuss the options you considered and the tradeoffs involved, focusing on dimensions like performance, scalability, consistency, cost, and development speed.

4. Explain your rationale

Describe why you chose the option you did, referencing data, experiments, or business requirements that tipped the balance.

5. Highlight outcomes and lessons

Share the results (e.g., improved latency, reduced costs) and any lessons learned or what you would do differently, showing growth and self-awareness.

Key Points to Mention

  • Scalability and performance implications of the decision
  • Consistency vs. availability tradeoffs (e.g., CAP theorem)
  • Cost and resource efficiency considerations
  • Impact on development velocity and team productivity
  • Risk mitigation and fallback strategies
  • Alignment with business goals and user experience

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

Q4

What metric were you optimizing for and what result did you actually achieve?

Product Analytics & Metrics
Author's notes

Have numbers ready.

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AI HintsAI Generated

Suggested Approach

Choose a project where you owned a clear metric, explain why that metric mattered to the business, and quantify both the target and the actual outcome. Be transparent about any gap between goal and result, and focus on what you learned and how you iterated.

Pro tip: Uber values a 'go-getter' mindset and data-driven decisions, so emphasize how you used data to course-correct when results fell short, and tie your metric to a broader business impact like rider retention or driver utilization.

1. Set the context

Briefly describe the project, your role, and why the metric you chose was the right one to optimize for the business.

2. Define the metric and target

State the specific metric (e.g., conversion rate, latency, retention) and the target you aimed to achieve, including how you set that target.

3. Explain your approach

Summarize the key actions you took to move the metric, highlighting any experiments, data analysis, or cross-functional collaboration.

4. Report the actual result

Quantify the outcome with concrete numbers, comparing it to the target, and be honest if you fell short.

5. Reflect and learn

Share what you learned from the result, how you adapted, and what you would do differently next time.

Key Points to Mention

  • The specific metric and why it was important to the business (e.g., revenue, user growth, efficiency).
  • The target value and how you determined it (e.g., baseline, industry benchmark, stakeholder input).
  • The actions you took to influence the metric, including any experiments or data-driven decisions.
  • The actual result with precise numbers and the percentage change from baseline.
  • Any gap between target and result, and how you responded or iterated.
  • The broader impact of the result on the team or company, and lessons learned.

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

Q5

What blockers did you hit during the project and how did you get past them?

Cross-functional AlignmentStakeholder Management
Author's notes

Went fine.

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AI HintsAI Generated

Suggested Approach

Choose a specific project where you encountered a significant blocker, ideally one involving cross-functional alignment or stakeholder management. Use the STAR method to structure your answer, focusing on the actions you took to overcome the blocker and the results achieved. Emphasize collaboration, communication, and problem-solving skills.

Pro tip: Show how you turned the blocker into an opportunity by improving processes or strengthening relationships, and quantify the impact where possible. Uber values ownership and collaboration, so highlight how you proactively involved stakeholders and drove alignment.

1. Set the Context

Briefly describe the project, your role, and the team structure to give the interviewer a clear picture of the situation.

2. Identify the Blocker

Clearly state the blocker, emphasizing its impact on the project and why it required cross-functional alignment or stakeholder management.

3. Describe Your Actions

Explain the specific steps you took to address the blocker, such as facilitating meetings, negotiating priorities, or escalating appropriately.

4. Highlight the Outcome

Share the results of your actions, including how the blocker was resolved, the project's success, and any positive impact on team dynamics or processes.

5. Reflect and Learn

Conclude with what you learned from the experience and how you've applied those lessons to prevent or handle similar blockers in the future.

Key Points to Mention

  • Cross-functional collaboration and communication strategies
  • Stakeholder management techniques, such as regular updates and expectation setting
  • Problem-solving and decision-making under pressure
  • Quantifiable results (e.g., time saved, increased efficiency, project delivered on time)
  • Lessons learned and process improvements implemented
  • Alignment with Uber's cultural values, such as ownership and collaboration

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

Q6

What would you do differently if you were starting this project over today?

Technical Trade-offsRoot Cause Analysis
Author's notes

I gave a pretty generic answer about investing more in observability earlier.

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AI HintsAI Generated

Suggested Approach

Choose a specific project you led or contributed to, and frame your answer around concrete technical decisions you would revisit. Focus on trade-offs you made under uncertainty and how you would optimize for scalability, reliability, and velocity differently with hindsight. Show self-awareness and growth without being overly self-critical.

Pro tip: Emphasize that you would validate assumptions earlier with data or prototypes, and tie your improvements to Uber's engineering principles like scalability and fault tolerance. Avoid saying you would change everything—show that you can prioritize the highest-impact changes.

1. Set the context

Briefly describe the project, your role, and its goals so the interviewer understands the baseline. Keep it concise and focus on aspects relevant to the changes you'll discuss.

2. Identify key decisions and trade-offs

Highlight 2-3 critical technical decisions you made (e.g., architecture, technology stack, data model) and the constraints or uncertainties at the time. Explain why you chose them.

3. Propose alternative approaches

For each decision, describe what you would do differently now and why. Focus on improvements in scalability, maintainability, performance, or team velocity.

4. Connect to learnings and impact

Explain how these changes would have improved outcomes (e.g., reduced technical debt, faster iteration) and what you learned that you apply today.

5. Summarize and show growth

Wrap up by reiterating the most impactful change and how it reflects your growth as an engineer. Keep it forward-looking and positive.

Key Points to Mention

  • Early validation of assumptions through prototyping or data analysis
  • Choosing more scalable architecture or technologies (e.g., microservices, event-driven design)
  • Investing in automated testing, CI/CD, and observability from the start
  • Designing for failure and resilience (e.g., circuit breakers, retries, graceful degradation)
  • Improving cross-team collaboration and API contracts
  • Prioritizing technical debt reduction and maintainability

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

Q7

What was your specific contribution versus what the rest of the team did?

Adaptability & Ambiguity
Author's notes

This one tripped me up a little.

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AI HintsAI Generated

Suggested Approach

Use the STAR method to describe a specific project, clearly delineating your individual actions and decisions from the team's collective work. Emphasize how your contributions complemented the team's efforts and drove the project forward, while acknowledging the collaborative nature of the work.

Pro tip: Be precise about your contributions without overstating them; interviewers value honesty and self-awareness. Highlight how you supported others and how the team's success was a shared achievement, showing you're a team player.

1. Set the context

Briefly describe the project, its goals, and the team structure, including your role and the team's size. This helps the interviewer understand the scope and your position.

2. Explain the team's overall approach

Summarize how the team planned to tackle the project, including any major milestones or challenges. This shows you understand the big picture and the team's strategy.

3. Detail your specific contributions

Clearly state what you personally did, using 'I' statements. Focus on your actions, decisions, and the impact you had on the project's success.

4. Acknowledge the team's contributions

Describe how your work interfaced with others' efforts and how the team collaborated to achieve the outcome. This demonstrates respect and teamwork.

5. Summarize the impact and learnings

Conclude with the overall result and what you learned about working in a team, especially in ambiguous situations. Tie back to the role and company values.

Key Points to Mention

  • Specific technical contributions (e.g., designed a service, optimized an algorithm, fixed a critical bug)
  • Collaboration and communication with team members (e.g., code reviews, pair programming, cross-functional meetings)
  • How you handled ambiguity or changing requirements
  • Metrics or outcomes that demonstrate your impact (e.g., performance improvements, reduced latency)
  • Your role in unblocking others or providing support
  • Lessons learned about teamwork and adaptability

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