Situation: Behavioral deep dive. Task: Narrative with progression. Action: I walked through: (1) Backend/DB foundations, (2) First data role—batch ETL, dimensional modeling, (3) Scale—Spark, cloud, real-time, (4) Platform—self-serve tooling, quality frameworks, (5) Leadership—mentoring, RFCs, open source. Each step tied to skills and impact....
The complete answer continues with detailed implementation patterns, architectural trade-offs, and production-grade considerations. It covers performance optimization strategies, common pitfalls to avoid, and real-world examples from companies like Nihilent. The answer also includes follow-up discussion points that interviewers commonly explore.
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