A practice prompt we wrote. No company or candidate report names it, so it carries no company tag.
How to answer
First Round Review reported, in February 2026, that Shilpa Balaji, a former Palantir recruiting lead, called grit probably the hallmark quality of the best FDEs she worked with at Palantir. Source 1So You Want to Hire a Forward Deployed EngineerPublisherFirst Round ReviewSource typenews report The question tests grit, but a strong answer also explains why you got further than those before you. “I kept at it longer” means you had more hours, not a better idea.
- Who gave up, what they tried, and what it cost. Name the attempts: “two engineers had each spent a sprint tuning the retry logic”, and what it cost the customer while it sat.
- The assumption every attempt shared. Maybe the frame: everyone treated it as a performance problem when it was a data problem. Or ownership: it sat between two teams, so it was nobody’s sprint.
- Your new hypothesis, the cheap test, and the budget. What was new: a packet capture, a query nobody had run, an hour with the night-shift operator. Say the time you asked for and your stopping point: “I asked my lead for three days; if the capture showed nothing, I’d hand it back with what I’d ruled out.”
- The fix and the proof. What changed, measured against the symptom people had stopped chasing.
- What you left behind. The monitor, test or runbook that stops it coming back.
Say the pivot as one sentence: “Everyone had asked why the job was slow; I asked why it was only slow on Mondays.” The rest supports it.
Keep it fair: credit what their dead ends ruled out, and if the problem was parked for a good reason, say what changed to make it worth your time. The trap is the hero story with no method, late nights and a lucky break. If you can’t say what you did differently, pick another story.
Follow-ups
What the interviewer may ask next, once your first answer is on the table.
- What had the people before you ruled out, and how did that narrow your search?
- How long were you prepared to give your new hypothesis before you would have stopped too?
- Why was it still unsolved? Was it hard, or was it nobody’s job?
- What did you stop doing to make time for it, and who agreed to that?
Where answers go wrong
- Tells a story of late nights and stubbornness with no new hypothesis, tool or measurement, so nothing explains why they got further than the people before them.
- Makes the colleagues who gave up sound careless, or calls a problem abandoned when it had been parked for a good reason.
- Spends weeks on it without telling their lead or the customer what was set aside, so even the win reads as unmanaged risk.
Answer this in two minutes
Write the answer you would say out loud. The clock starts with your first word.
Illustrative answer about a fictional project
I was an engineer at a company that runs payroll processing for mid-sized employers. Every night our system put each client’s payment file in an SFTP folder, and each client’s bank collected it from there.