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ALCON DTS Interview Questions

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

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1
CodingStart here. 17 questions · ~166 min
Reverse a String in PythonEasy
Practice

Reverse a string in Python using character traversal and return the reversed result.

StringsfunctionspythonALCON DTS
Implement Binary Search AlgorithmEasy
Practice

Write a binary search function to find a target value in a sorted array.

SearchingALCON DTS
Sorting Algorithm ProblemMedium
Practice

Order Bentley iTwin model updates by priority and timestamp using a stable merge sort without Python's built-in sorting.

RecursionCodingSortingALCON DTS
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2
Execution25 questions · ~244 min
Prioritize Across Competing Data ProjectsEasy

Explain how you prioritize across multiple concurrent data engineering projects with competing stakeholder needs and limited capacity.

Trade-offsRoadmappingScope ManagementALCON DTS
Managing a Failed Project PivotHard

Describe how you handled a project that failed or required a major pivot, including stakeholder alignment, trade-offs, and risk management.

Rollback PlanTrade-offsRisk AssessmentALCON DTS
Describe a Successful ProjectEasy

Share a concrete project you led, focusing on success criteria, stakeholder alignment, execution, and measurable outcomes.

Success CriteriaRoadmappingRisk AssessmentALCON DTS
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3
Pipelines3 questions · ~29 min
Testing and CI for PipelinesEasy

Explain how you apply automated testing and CI practices to data pipelines and pipeline releases.

InfrastructureToolsQualityALCON DTS
Database Design for High TrafficHard

Tests database modeling and performance considerations for read/write-heavy workloads at ALCON DTS.

InfrastructureData ModelingQualityALCON DTS
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