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Updated weekly · Last refresh Sep 22
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ConnectWise Software Engineer Interview Questions

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

6questions
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1
SQL & Data ManipulationStart here. 2 questions + 3 drills · ~46 min
Handling Deadlocks in Concurrent TransactionsMedium

Explain how to detect, prevent, and recover from deadlocks in concurrent PostgreSQL transaction workloads.

deadlocksdatabase managementmysqlCConnectWise
SQL vs NoSQL for Go-to-Market DataEasy

Explain how SQL and NoSQL differ in schema, consistency, scaling, and Demandbase-style analytics use cases.

JoinsData WranglingCConnectWise
Optimize a Slow SQL QueryHard
Practice
Practice drill

Rewrite a slow PostgreSQL loan payment query to reduce scanned rows while preserving the required aggregated results.

database optimizationJoinsData WranglingAmeripriseEEltro Cyberchrome PrivateEnergyHub
SQL vs NoSQL DifferencesEasy
Practice
Practice drill

Query a comparison table to present the key structural and operational differences between SQL and NoSQL databases.

nosqlJoinsData WranglingCogitoRamsey SolutionsIInnovaccer
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
System Design2 questions · ~16 min
Optimize REST API for Large DataMedium

Tests your ability to improve performance and usability of APIs that serve large payloads.

data handlingoptimizationCConnectWise
Microservices Architecture TradeoffsMedium

Assesses your understanding of microservices benefits and when they apply to real systems.

scalabilityarchitecturemicroservicesCConnectWise

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3
Behavioral & Leadership2 questions · ~16 min
Explaining OOP Through Project DecisionsMedium

Tests technical communication and ownership by asking you to explain how OOP principles shaped real engineering decisions and outcomes.

projectstechnical experienceoopCConnectWise
Project Role and ChallengesMedium

Assesses your communication, ownership, and technical problem-solving through a concrete project story.

project experiencetechnical depthCConnectWise
The finish line: interview-readyComplete all 6 questions plus 3 hands-on drills to finish this plan.