Engineering manager at Weights & Biases

As asked

Tell me about a time you had to performance-manage a struggling senior engineer. Walk through what you did and what came of it.

Sample answer outline

Pick a real story. Cover: how you spotted the gap (and how long it took, sometimes too long), how you raised it in 1:1s with concrete evidence (not feelings), the formal performance improvement plan if it got there, the support you offered (mentorship, scope changes, coaching), and the outcome (the engineer turned it around, or they left, or you had to let them go). The strong answer takes ownership: were the expectations clear, did you give feedback early enough, did the team set them up to fail. Avoid blaming the engineer.

Expect these follow-ups

• What is the soonest you would consider a PIP?
• How do you keep this from infecting team morale?
• What did you learn about your own hiring or onboarding from this?

As asked

Design the interview loop for a senior backend engineer at your company. What stages, what each one tests, and what your bar is.

Sample answer outline

Stages: recruiter screen (basic fit, comp expectations), hiring manager call (motivation, scope handled, communication), technical screen (one focused coding or design discussion, signal not breadth), onsite loop (system design, coding, behavioural, cross-functional). Each stage should test something the next stages cannot. Calibrate the bar: write down what 'meets the bar' means for each interview and have a panel calibration session. Train interviewers. Run a debrief that surfaces disagreement, not consensus. Track conversion rates and time-to-hire by source to catch funnel problems.

Expect these follow-ups

• How do you reduce false negatives in a hiring loop?
• What is your strategy for unconscious bias in debriefs?
• How would you change this loop for a remote-only company?

As asked

How do you structure your 1:1s with direct reports? What do you actually cover, how long are they, how often, and how do you make sure they stay useful rather than becoming status updates?

Sample answer outline

A strong answer distinguishes 1:1s from status meetings: the agenda belongs to the report, not the manager. They should cover career growth, blockers, team health, and things the report would not raise in a group. Candidate should mention a standing agenda doc, async pre-fills, and how they adjust frequency based on seniority and recent turbulence.

Expect these follow-ups

• What do you do when a report consistently shows up with nothing to discuss?
• How do you handle a report who only wants to talk about tasks, never about their growth?

As asked

Three weeks into the quarter you can see that two of your four planned deliverables are going to slip past the deadline. Your VP is expecting all four. What do you do in the next 48 hours, and how do you communicate with leadership?

Sample answer outline

Strong answers surface the problem immediately rather than hoping it self-corrects. They diagnose whether the cause is estimation error, scope creep, blocked dependencies, or a personnel issue. Communication to leadership should be factual: original commitment, current forecast, root cause, and options with tradeoffs. The candidate should show they offer solutions, not just problems.

Expect these follow-ups

• How would you handle a VP who pushes back and insists the team just needs to work harder?
• What process change would you put in place to catch this earlier next quarter?

As asked

You need to hire a senior backend engineer. How do you design the interview loop? What rounds do you include, who runs each, what dimensions are you scoring, and how do you calibrate interviewers so two people are grading the same thing?

Sample answer outline

A strong answer covers the full loop: recruiter screen, hiring manager screen, technical depth round, system design round, cross-functional or behavioral round, and a bar-raiser or calibration step. They should define the scoring dimensions explicitly (technical depth, communication, ownership, collaboration) and explain how they run a pre-brief and debrief to prevent anchoring bias.

Expect these follow-ups

• What do you do when two strong interviewers disagree on a candidate?
• How do you prevent your team from hiring copies of themselves?

As asked

Two of your senior engineers have been arguing for two weeks about a technical architecture decision. The debate is starting to block other team members. How do you resolve it without undermining either engineer or making the decision for them?

Sample answer outline

Strong candidates create a structured decision process: define the decision criteria up front, timebox the debate, ask each engineer to write a lightweight RFC with their proposal and tradeoffs, then hold a decision meeting with clear ownership. They avoid being the tie-breaker unless truly deadlocked. They also address the relationship damage separately from the technical question.

Expect these follow-ups

• What if one engineer is clearly right technically but is being too aggressive in the debate?
• How do you document the decision so it does not get relitigated in six months?