Business Metrics and Unit Economics Questions

Evaluate a candidates ability to analyze the financial drivers and per customer economics that determine business sustainability and growth. Core concepts include revenue streams and pricing, gross margin, contribution margin, operating margin, customer acquisition cost, lifetime value per customer, lifetime value to customer acquisition cost ratio, payback period, average revenue per user, churn and retention rates, and metrics for subscription or recurring revenue models such as annual recurring revenue, monthly recurring revenue, expansion revenue, and contraction effects. Candidates should be able to perform back of the envelope calculations and sensitivity analysis, interpret trade offs between growth and profitability, link marketing product and channel activities to financial outcomes, explain how metrics vary by customer segment or acquisition channel, and make strategic recommendations such as pricing adjustments, segmentation strategies, acquisition channel shifts, or investment versus efficiency decisions. Interviewers may request simple calculations, scenario analysis, and prioritized actions grounded in metric changes.

MediumSystem Design

50 practiced

Write an outline for a data validation test suite that runs daily to ensure unit-economics metrics are reliable: include checks for MRR reconciliation, negative revenues, duplicate subscriptions, outlier spikes, FX rate availability, and thin cohorts. For each test specify the alert condition and suggested first-step remediation.

EasyTechnical

66 practiced

A product manager asks: 'Why does our payback period look good in the report but CFO is concerned about cash flow?' Provide a clear explanation of the difference between payback period as a metric and actual cash flow impact, and list three additional finance metrics you would include when presenting unit economics to the CFO.

EasyTechnical

64 practiced

Explain how contraction revenue and expansion revenue affect net revenue retention (NRR). Given starting MRR 100k, expansion 10k, contraction 4k, and churn 6k in a month, compute NRR and interpret the result.

MediumTechnical

48 practiced

Describe a prioritized checklist you would follow when you see LTV declining month-over-month while acquisition volume is increasing. Include at least five checks spanning data correctness, product/marketing causes, and financial implications, and specify how you would quantify each check.

HardTechnical

47 practiced

Design an approach to estimate customer lifetime value for a marketplace where buyers and sellers have different behaviors. Explain which LTV(s) you would compute, required data, and how to model cross-side network effects that cause LTV to be interdependent.

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