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Palantir·Software Engineer·Technical Phone Screen·Intermediate

Intermediate
Jun 2026

Summary

Resume deep dive at Palantir for a software engineer role. You pick a project, walk through it, and then they pepper you with follow-ups. The follow-ups were way less technical than I expected, mostly about process and decision-making.

Questions Asked (3)

Q1

Walk me through a project you've worked on that you're proud of.

Adaptability & AmbiguityTechnical Trade-offs
Author's notes

You get to pick the project, which sounds like a gift until you're mid-explanation and realize you picked something too complicated to summarize in 15 minutes.

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AI HintsAI Generated

Suggested Approach

Choose a project that showcases both technical depth and your ability to navigate ambiguity, ideally with clear trade-offs you navigated. Structure your answer to highlight the problem, your approach, key decisions, and measurable impact, while emphasizing adaptability and technical judgment.

Pro tip: Palantir values engineers who can operate in ambiguous environments and make pragmatic trade-offs; explicitly discuss how you balanced competing priorities (e.g., speed vs. scalability) and what you learned from the experience.

1. Set the Context

Briefly describe the project's purpose, your role, and the team size. Highlight any ambiguity or constraints (e.g., unclear requirements, tight deadlines) to set the stage.

2. Explain the Challenge

Articulate the core technical problem and why it was non-trivial. Mention any unknowns or shifting requirements that required adaptability.

3. Detail Your Approach and Trade-offs

Walk through your solution, focusing on key technical decisions and the trade-offs you considered (e.g., performance vs. development speed, build vs. buy). Explain why you chose your path.

4. Highlight Impact and Results

Quantify the outcome with metrics (e.g., reduced latency by X%, increased user engagement). Connect the results to business or user value.

5. Reflect and Learn

Share what you learned, how you adapted, and what you would do differently. Show growth and self-awareness.

Key Points to Mention

  • Navigating ambiguous requirements and making decisions with incomplete information
  • Specific technical trade-offs (e.g., consistency vs. availability, monolith vs. microservices) and their rationale
  • Collaboration with cross-functional teams (e.g., product, design) to clarify and adapt
  • Quantifiable impact (e.g., performance improvements, cost savings, user adoption)
  • Iterative development and responding to feedback or changing conditions
  • Lessons learned and how they apply to future projects

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

Q2

How did you decide on the approach you took for that project? What alternatives did you consider?

Technical Trade-offsAdaptability & Ambiguity
Author's notes

This is where it got interesting.

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AI HintsAI Generated

Suggested Approach

Choose a project where you faced a genuine technical decision with multiple viable options. Walk through your decision-making process step by step, emphasizing how you evaluated trade-offs against project constraints and requirements. Conclude by reflecting on the outcome and what you learned, showing self-awareness and growth.

Pro tip: Palantir values engineers who can navigate ambiguity and justify decisions with data. Quantify the impact of your choice (e.g., 'reduced latency by 30%') and acknowledge any drawbacks, demonstrating balanced judgment.

1. Set the Context

Briefly describe the project, your role, and the specific decision point. Highlight the constraints (e.g., time, scalability, team size) that shaped the problem.

2. Outline Alternatives

List 2-3 realistic alternatives you considered. Explain the pros and cons of each, showing you evaluated multiple angles.

3. Explain Your Decision Criteria

Describe the factors that drove your choice, such as performance, maintainability, cost, or alignment with business goals. Mention any data or experiments you used.

4. Describe the Implementation and Outcome

Summarize how you executed the chosen approach and the results. Include metrics or feedback that validate the decision.

5. Reflect and Learn

Discuss what you would do differently or how the experience influenced your future work. Show humility and a growth mindset.

Key Points to Mention

  • Trade-offs between performance, scalability, and development speed
  • Use of data or prototyping to validate assumptions
  • Alignment with long-term maintainability and team expertise
  • Consideration of edge cases and failure modes
  • Impact on stakeholders and business objectives
  • Lessons learned and how you adapted in hindsight

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

Q3

How did you handle uncertainty or changing requirements during the project?

Adaptability & AmbiguityAgile / Sprint Management
Author's notes

Caught me a little flat-footed.

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AI HintsAI Generated

Suggested Approach

Use the STAR method to describe a specific project where requirements changed or uncertainty was high. Focus on how you proactively managed the ambiguity through communication, prioritization, and iterative delivery, and highlight the positive outcome.

Pro tip: Emphasize how you balanced speed and quality by breaking down work into small, testable increments and validating assumptions early with stakeholders. Show that you not only adapted but also helped others navigate the change.

1. Set the Context

Briefly describe the project, your role, and the source of uncertainty or changing requirements (e.g., evolving customer needs, unclear specs, shifting priorities).

2. Describe Your Approach

Explain the steps you took to handle the uncertainty: how you gathered information, communicated with stakeholders, and adjusted plans.

3. Highlight Agile Practices

Mention specific Agile/Scrum techniques you used, such as breaking work into sprints, prioritizing backlog, or conducting spike investigations.

4. Show Collaboration and Communication

Detail how you kept the team and stakeholders aligned, e.g., through daily stand-ups, demos, or written updates, and how you incorporated feedback.

5. Share the Outcome and Learnings

Conclude with the results: what was delivered, how it benefited the project, and what you learned about handling ambiguity for future work.

Key Points to Mention

  • Proactive communication with stakeholders to clarify and re-prioritize requirements
  • Iterative development and incremental delivery to accommodate changes
  • Risk mitigation through spikes, prototypes, or proof-of-concepts
  • Prioritization techniques (e.g., MoSCoW, backlog grooming) to focus on high-value items
  • Collaboration tools and ceremonies (e.g., daily stand-ups, sprint reviews) to maintain alignment
  • Adaptability and learning from feedback to improve future responses to change

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