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Updated weekly · Last refresh Aug 30

Sojern Software Engineer Interview Questions

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

16questions
~3htotal time
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1
SQL & Data ManipulationStart here. 3 questions + 2 drills · ~53 min
Second-Highest Booking ValueEasy
Practice

Find the second-highest distinct completed booking value using a join, filtering, and DENSE_RANK.

SubqueriesRankingtransactionsSojern
LEFT vs INNER JOIN ReportingEasy

Explain how LEFT JOIN vs INNER JOIN changes report completeness, NULL handling, and KPI interpretation in Meta-style reporting.

JoinsData WranglingCase WhenSojern
Conversion Rate Per DestinationMedium

Tests SQL joins, grouping, and correct metric calculation for conversion analytics.

JoinsConversion RateAggregationsSojern
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
Top Customers by Net SalesMedium
Practice
Practice drill

Compute top 10 customers by net sales using joins and aggregations, ordering by revenue with deterministic tie-breaking.

SubqueriesJoinsData WranglingGain DigitalTCSZest AI
2
Coding3 questions · ~33 min
Palindrome and String ReversalEasy
Practice

Determine whether a string is a palindrome and return its reversed form using two-pointer string processing.

string manipulationSojern
Two Sum Coding ProblemEasy
Practice

Find two array values that sum to a target using a hash map in O(n) time.

leetcodeAlgorithmsSojern
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3
Pipelines4 questions · ~44 min
Schema for High-Volume Travel SearchMedium

Tests data modeling choices for scale and query performance in travel search analytics.

Data QualityInfrastructureData ModelingSojern
Real-Time Ad Impression TrackingHard

Tests system design for event ingestion, aggregation, and real-time analytics at scale.

InfrastructureStream ProcessingOrchestrationSojern
Sync Search Data Across RegionsHard

Tests distributed systems thinking, consistency tradeoffs, and latency-aware sync strategies.

Data QualityInfrastructureDependenciesSojern
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4
Behavioral & Leadership6 questions · ~65 min
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The finish line: interview-readyComplete all 16 questions plus 2 hands-on drills to finish this plan.