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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 weekly.

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1
SQL & Data ManipulationStart here. 7 questions + 1 drill · ~77 min
2
Coding6 questions · ~57 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 Learning7 questions · ~67 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 · ~57 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 · ~48 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
Pipelines6 questions · ~57 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 topics13 questions · ~125 min
Improve Model AccuracyMedium

Approach for improving a model's accuracy by checking errors, features, and tuning choices.

Hyperparameter TuningCross-ValidationAccuracyPCS Global Tech
Ensuring Open Team CommunicationEasy

Tests collaboration habits and your ability to keep stakeholders aligned through clear communication.

Success CriteriaRisk AssessmentScope ManagementPCS Global Tech
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The finish line: interview-readyComplete all 50 questions plus 1 hands-on drill to finish this plan.