Dataford
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Updated weekly · Last refresh Aug 30

Ltimindtree Data Scientist Interview Questions

The questions to prepare for a Ltimindtree Data Scientist interview. Questions from real interview reports rank first. Updated weekly.

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1
NLPStart here. 6 questions · ~49 min
Fine-Tuning vs RAGMedium

Compare fine-tuning and RAG for grounded language model applications, including when to use each approach.

Language ModelsFeature EngineeringDeep LearningLtimindtree
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2
Machine Learning5 questions · ~41 min
Reducing Overfitting in ML ModelsMedium

Explain how to diagnose and reduce overfitting using regularization, cross-validation, and model selection.

Cross-ValidationBias-Variance TradeoffRegularizationLtimindtree
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3
System Design3 questions · ~24 min
Design a Low Latency Inference PlatformHard

Design a low latency ML inference platform for high-frequency online predictions with strict response times and evolving model features.

high-frequency requestslatencysystem architectureLtimindtree
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4
Behavioral & Leadership8 questions · ~65 min
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5
More topics6 questions · ~49 min
Pitfalls in Streaming Experiment AnalysisHard

Identify major online experiment pitfalls and explain how they can bias results in a streaming product A/B test.

Network InterferenceNovelty EffectSample Ratio MismatchLtimindtree
Interpreting Significance in ExperimentsMedium

Explain statistical significance in experiments and how p-values and confidence intervals guide interpretation.

Confidence IntervalsStatistical SignificanceP-ValuesLtimindtree
Diagnose KPI Drop After ReleaseMedium

Diagnose a post-release KPI drop by separating instrumentation issues from real behavior changes and tracing the problem through the metric hierarchy.

KPILeading IndicatorsDiagnosisLtimindtree
SQL Window Functions for Rolling MetricsMedium

Tests advanced SQL window function usage for rolling calculations and partitioned ranking.

Window FunctionsRankingRunning TotalsLtimindtree
North Star Metric DesignMedium

Tests product sense for metric selection, goal alignment, and defining a north star metric.

North Star MetricMetricsProduct VisionLtimindtree
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Second Highest Trader SalaryEasy
Practice
Practice drill

Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.

SubqueriesRankingSortingeClinicalWorksInformaticaSpectraforce Technologies
SQL Rolling Average and RankingHard
Practice
Practice drill

Use CTEs and window functions to calculate 7-day transaction averages and rank Loft users within each region.

Window FunctionsRankingRunning TotalsLoftArcadisCgi Nederland
Monthly Revenue Running Totals by RegionMedium
Practice
Practice drill

Use joins, monthly aggregation, and window functions to compute running revenue totals and customer rank by region.

Window FunctionsRankingRunning TotalsNTT DATAAppfolio
The finish line: interview-readyComplete all 28 questions plus 3 hands-on drills to finish this plan.