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Data and Analytics Infrastructure Questions

Designing building and operating end to end data and analytics platforms that collect transform store and serve event product and revenue data for reporting analysis and decision making. Core areas include event instrumentation and tag management to capture user journeys marketing attribution and experimental events; data ingestion strategies and connectors; extract transform load pipelines and streaming processing; orchestration and workflow management; and choices between batch and real time architectures. Candidates must be able to design storage and serving layers including data warehouses data lakes lakehouse patterns and managed analytical databases and to choose storage formats partitioning and indexing strategies driven by volume velocity variety and access patterns. Data modeling for analytics covers raw event layers curated semantic layers dimensional modeling and metric definitions that support business intelligence and product analytics. Governance and reliability topics include data quality validation freshness monitoring lineage metadata and cataloging schema evolution master data considerations and role based access control. Operational concerns include scaling storage processing and query concurrency fault tolerance and resiliency monitoring and observability alerting cost and performance trade offs and capacity planning. Finally candidates should be able to evaluate and select tools and frameworks for orchestration stream processing and business intelligence integrate analytics platforms with downstream consumers and explain how architecture and operational choices support marketing product and business decisions while balancing tooling investment and team skills.

EasyTechnical
79 practiced
Compare Change Data Capture (CDC) versus periodic batch ingestion for synchronizing a transactional MySQL database to an analytics store. Discuss latency, consistency guarantees, complexity, schema-change handling, operational cost, and when you would choose CDC over nightly/daily batch extracts.
MediumTechnical
54 practiced
Design an orchestration and backfill strategy using Airflow for a data platform that runs both batch and streaming-derived tables. Explain DAG structuring, idempotency of tasks, backfill mechanics, SLA enforcement, and how you would handle schema changes during backfills.
HardTechnical
76 practiced
Design a capacity planning model for storage and compute costs for an analytics platform that grows predictably with product usage. Include how you would model the effects of sampling rates, data retention policies, partitioning, and compute sizing for ETL/ELT and interactive queries; and how to forecast costs for the next 12 months.
EasyTechnical
60 practiced
You're designing event instrumentation and tag management for a web and mobile product. Describe best practices for event naming conventions, payload design (what to include/exclude), schema versioning, sampling strategy, PII handling and QA/testing. Explain how these practices enable reliable product analytics, marketing attribution and experimentation downstream.
MediumTechnical
115 practiced
How would you implement master data management (MDM) to create a single customer view across CRM, billing, and product systems for analytics? Describe identity resolution, authoritative sources, conflict resolution rules, and how to operationalize updates into the analytics semantic layer.

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