Safaricom Data Engineer Interview Questions
The questions to prepare for a Safaricom Data Engineer interview. Questions from real interview reports rank first. Updated daily.
Use SUM, GROUP BY, ORDER BY, and LIMIT to find the top 10 Healthfirst Marketplace customers by purchase total.
SafaricomExplain normalization, why it improves data integrity, and when denormalization is a practical performance tradeoff.
SafaricomTests ability to write correct SQL joins and optimize SQL for production workloads.
SafaricomUse GROUP BY and SUM to rank the top 10 customers by total revenue from a single sales table.
Housecall Pro
Equifax
XYZCalculate monthly M-PESA active users and their month-over-month growth rate using PostgreSQL.
SafaricomExplain which data structures work best for large datasets based on access patterns, memory use, and update costs.
SafaricomEvaluates understanding of big data concepts and algorithmic approaches for large-scale processing.
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Discuss how you use APIs in data pipelines, including ingestion patterns, validation, and operational monitoring.
SafaricomApproach for protecting sensitive patient data while maintaining high data quality across an analytics pipeline.
SafaricomDescribe a real production pipeline failure, how you diagnosed and fixed it, and what changes you made around orchestration, quality, and reruns.
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