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Updated weekly · Last refresh Aug 30

Lumiradx Software Engineer Interview Questions

The questions to prepare for a Lumiradx Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

33questions
~5htotal time
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1
CodingStart here. 7 questions · ~67 min
Breadth-First SearchEasy
Practice

Implement BFS to traverse a graph level by level from a given start node.

QueueSearchingGraphsLumiradx
Reverse a Linked ListEasy
Practice

Reverse a singly linked list in place using pointer manipulation.

RecursionLinked ListsLumiradx
Reverse String In PlaceEasy
Practice

Reverse a string using a two-pointer approach by converting it to a mutable character list in Python.

CodingStringsProgrammingLumiradx
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2
Execution3 questions · ~29 min
Root Cause Investigation ApproachMedium

Tests your structured debugging and investigation process to prevent recurrence.

root causeLumiradx
Validate New Test EquipmentMedium

Evaluates your approach to qualification, verification, and readiness for production use in a regulated environment.

validationproductionLumiradx
Control and Improve ExecutionMedium

Assesses your ability to take ownership of an unfamiliar process and operationalize it effectively.

ManagementLumiradx
3
Behavioral & Leadership21 questions · ~202 min
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4
More topics2 questions · ~19 min
Patient Diagnostics Data SchemaHard

Tests your data modeling skills for traceability, auditability, and efficient querying in a medical context.

schema designdata integrityData ModelingLumiradx
Embedded Security and InterfacesMedium

Assesses your embedded systems experience and your testing approach for reliability.

RTOSEmbedded SystemsLumiradx

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
SQL Duplicate Record DetectionEasy
Practice
Practice drill

Find duplicate American Institutes for Research assessment submissions using a CTE, GROUP BY, HAVING, and joins.

deduplicationsqldata integrityAmerican Institutes for ResearchMacy's
Contact Center Agent Performance MetricsHard
Practice
Practice drill

Compute daily agent call KPIs and SLA using joins, aggregations, and window ranking in a contact center model.

ETLAggregationsData ModelingADP
Impute Sparse Assessment ScoresHard
Practice
Practice drill

Use CTEs, joins, CASE, and null handling to clean sparse assessment scores and impute missing values per question.

null handlingData Wranglingdata integrityMercor
The finish line: interview-readyComplete all 33 questions plus 3 hands-on drills to finish this plan.