Deutsche Telekom Interview Questions
The questions to prepare for Deutsche Telekom interviews, across all roles. Questions from real interview reports rank first. Updated daily.
Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.
Find two indices in an array whose values add up to a target using a hash map.
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Approach for maintaining data quality and integrity across ETL pipelines.
Define campaign success using business KPIs, funnel conversion, acquisition cost, and leading indicators tied to outcomes.
Explain how you prioritize work across multiple operational projects with competing deadlines, impact, and stakeholder pressure.
Design an LLM serving system that balances latency, cost, scalability, and safety for production traffic.
Explain a controlled month-end close, including reconciliations, accruals, variance analysis, review, and GAAP financial statement completion.
Explain how to evaluate a generative model using offline and online methods, with attention to hallucination, product metrics, and experiment design.