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G-TECH Services Interview Questions

The questions to prepare for G-TECH Services interviews, across all roles. Questions from real interview reports rank first. Updated weekly.

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~4htotal time
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1
System DesignStart here. 3 questions · ~24 min
Design a Personalized Recommendation RankerHard

Design a personalized recommendation system that turns user preferences into ranked suggestions with retrieval, ranking, and feedback loops.

RetrievalTwo-Tower ModelsRecommendation SystemsG-TECH Services
Distributed Data ConsistencyHard

Tests understanding of consistency models, coordination, and failure handling.

system designdistributed systemsdata consistencyG-TECH Services
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2
Coding11 questions · ~89 min
Analyze Time and Space ComplexityMedium

Tests your ability to reason about algorithm efficiency and resource usage.

space complexitytime complexityG-TECH Services
Ensuring Code QualityEasy

Tests practices for maintainability, correctness, and reliability in day-to-day development.

Hash TablesSearchingSortingG-TECH Services
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3
Execution3 questions · ~24 min
System Security ConsiderationsMedium

Tests security mindset across design and implementation for production software systems.

Trade-offsSuccess CriteriaRisk AssessmentG-TECH Services
Load Balancing Design ApproachMedium

Tests system design thinking for reliability, scalability, and efficient resource utilization.

Launch PlanningTrade-offsRisk AssessmentG-TECH Services
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4
Behavioral & Leadership10 questions · ~81 min
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5
More topics2 questions · ~16 min
Optimizing a Slow QueryHard

Tests SQL performance troubleshooting and ability to improve query efficiency with sound reasoning.

JoinsindexesAggregationsG-TECH Services
Joining Tables for Data ManipulationMedium

Tests SQL join understanding and ability to transform relational data correctly.

SubqueriesJoinsData WranglingG-TECH Services
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 29 questions plus 3 hands-on drills to finish this plan.