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Machinify Interview Questions

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

50questions
~7htotal time
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1
CodingStart here. 4 questions · ~33 min
Shortest Path in Weighted GraphHard
Practice

Use Dijkstra’s algorithm with a priority queue to find the shortest path in a weighted graph with non-negative edges.

shortest pathAlgorithmsGraphsMachinify
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2
A/B Testing & Experimentation3 questions · ~25 min
Common Pitfalls in Experiment ResultsHard

Identify the main pitfalls that can distort A/B test interpretation and explain how to guard against them.

PeekingNovelty EffectSample Ratio MismatchMachinify
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3
SQL & Data Manipulation6 questions + 3 drills · ~80 min
Handling Missing and Dirty SQL DataMedium

Explain how to profile, clean, and standardize missing or dirty data before analysis.

Data WranglingCase WhenQualityMachinify
Monthly Sales Trends by CategoryMedium
Practice
Practice drill

Aggregate monthly sales by product category and use LAG to calculate month-over-month changes.

InfrastructureToolsData WranglingTotal Wine & MoreInc.Benjamin Moore
Cleaning a Messy DatasetMedium
Practice
Practice drill

Filter invalid game events and normalize event names using PostgreSQL string and null handling.

missing valuesdata cleaningnull handlingQuantiumScopelyCarvana
Data Cleaning and PrepMedium
Practice
Practice drill

Prepare valid encounter records by trimming text, excluding missing values, and removing invalid charges.

missing valuesdata cleaningData WranglingMassachusetts General HospitalCognizantDataVisor
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4
Product Sense5 questions · ~42 min
Define Metrics for New FeaturesMedium

Define a success metric for a new feature that captures real user value, not just raw usage.

MetricsFeature Prioritizationuser valueMachinify
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5
Execution5 questions · ~42 min
Migrate Monolith to MicroservicesHard

Plan a zero-downtime migration from a legacy monolith to microservices while managing risk, sequencing, and stakeholder pressure.

Trade-offsRoadmappingRisk AssessmentMachinify
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6
Pipelines5 questions · ~42 min
Design Data Quality Controls PipelineEasy

Design a batch data pipeline with quality gates, quarantine handling, and monitored reprocessing for 120M finance records per day.

ETLIdempotencyQualityMachinify
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7
More topics22 questions · ~183 min
Staying Current on Industry TrendsEasy

A practical approach for tracking industry trends, competitor moves, and market changes in a way that informs strategy decisions.

EstimationCompetitive AnalysisGrowth StrategyMachinify
Transformers Attention vs RNNsHard

Tests your foundational understanding of sequence modeling and attention math.

Neural NetworksLanguage ModelsDeep LearningMachinify
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The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.