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Updated weekly · Last refresh Aug 30

Perchwell Software Engineer Interview Questions

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

15questions
~2htotal time
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1
CodingStart here. 4 questions · ~37 min
Two Sum with TargetEasy
Practice

Use a hash map to find two array elements that sum to a target in O(n) time.

Hash TablesArraysStringsPerchwell
Creating a Custom Property FieldMedium

Tests your end-to-end approach to building extensible data and UI features.

Hash TablesArraysStringsPerchwell
Ruby on Rails ExperienceEasy

Tests your practical Rails experience and how you apply it to product work.

Hash TablesArraysStringsPerchwell
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2
Execution3 questions · ~27 min
SQL vs NoSQL Trade-offsMedium

Tests database selection reasoning for Perchwell data and query patterns.

Trade-offsRisk AssessmentScope ManagementPerchwell
Implement Property FilteringMedium

Tests product-focused implementation thinking for property search and filtering.

Trade-offsSuccess CriteriaScope ManagementPerchwell
Scaling for Traffic GrowthHard

Tests system design skills for scaling Perchwell services under higher load.

Trade-offsSuccess CriteriaRoadmappingPerchwell
3
Behavioral & Leadership6 questions · ~55 min
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4
More topics2 questions · ~18 min
Design a URL Shortening ServiceHard

Design a URL shortening service that routes, ranks, and monitors links at scale.

Feature StoreModel ServingPerchwell
SQL and Automated TestingMedium

Evaluates ability to combine SQL data work with automated testing practices for production workflows.

automated testingsqlPerchwell

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

Find duplicate customer profiles by grouping on identifying fields and returning only repeated records.

Group ByHavingAggregationsAdtalem Global EducationAmerisave MortgageCitrine Informatics
Top 5 Products Per MonthMedium
Practice
Practice drill

Rank completed product sales by month using joins, aggregation, date truncation, and ROW_NUMBER().

sqlCGICgi NederlandCGI Group
Top Users by Recent Transaction VolumeMedium
Practice
Practice drill

Find the top 3 users by completed transaction volume in the last 30 days using joins and aggregation.

Data Analysisquery optimizationsqlTTier 1 BankRevolutChime
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