Safaricom Data Scientist Interview Questions
The questions to prepare for a Safaricom Data Scientist interview. Questions from real interview reports rank first. Updated weekly.
Explain how to train and evaluate models on highly imbalanced fraud data without relying on misleading accuracy.
SafaricomCompute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.
SafaricomIdentify major online experiment pitfalls and explain how they can bias results in a streaming product A/B test.
SafaricomDiagnose why conversion fell from 4.8% to 3.1% after a launch by breaking the metric across funnel steps, cohorts, and segments.
SafaricomDefine a success metric for a new feature that captures real user value, not just raw usage.
SafaricomTests data cleaning, parsing, and aggregation skills for messy operational logs.
SafaricomTests system design for low-latency personalization and scalable serving.
SafaricomTests hypothesis testing, p-values or confidence intervals, and experiment interpretation.
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Use GROUP BY and SUM to rank the top 10 customers by total revenue from a single sales table.
Housecall Pro
Equifax
XYZAggregate monthly sales by product category and use LAG to calculate month-over-month changes.
Total Wine & More
Inc.
Benjamin Moore