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PCS Global Tech Interview Questions

The questions to prepare for PCS Global Tech interviews, across all roles. Questions from real interview reports rank first. Updated daily.

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1
SQL & Data ManipulationStart here. 6 questions · ~65 min
2
Coding6 questions · ~65 min
Palindrome and String ReversalEasy
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Determine whether a string is a palindrome and return its reversed form using two-pointer string processing.

string manipulationPCS Global Tech
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3
Machine Learning6 questions · ~65 min
Supervised vs Unsupervised LearningEasy

Explain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.

Unsupervised LearningFeature EngineeringBias-Variance TradeoffPCS Global Tech
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4
Metrics6 questions · ~65 min
Define Success Metrics for FeaturesMedium

Set a clear north star, supporting KPIs, leading indicators, and guardrails for a new product feature.

North Star MetricLagging IndicatorsKPIsPCS Global Tech
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5
Product Sense5 questions · ~54 min
Build a User Feedback ProcessEasy

A structured approach for gathering user feedback, synthesizing it, and turning it into product decisions.

User ResearchUser NeedsPain PointsPCS Global Tech
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6
Pipelines5 questions · ~54 min
Design an ETL Pipeline for Large DatasetsMedium

Design an ETL pipeline to process 10TB of data daily from multiple sources into a data warehouse with strict data quality checks.

InfrastructureETLData ModelingPCS Global Tech
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7
More topics16 questions · ~174 min
Explain Cross-Validation in Model SelectionEasy

Explain what cross-validation is and why it matters when choosing between models.

Cross-ValidationAccuracyThreshold TuningPCS Global Tech
Relocation WillingnessEasy

Tests logistical fit for the role location requirements.

Risk AssessmentScope ManagementPCS Global Tech
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