Dataford
Top 14
Prep plan
Updated weekly · Last refresh Sep 24

Solarsquare Backend Engineer Interview Questions

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

14questions
~2htotal time
Track your progressSign up free to work through all 14 questions and resume where you left off.
Start practicing free →
1
CodingStart here. 5 questions · ~41 min
Full CRUD REST API in Node.jsHard

Evaluates your ability to design and implement a production-style CRUD REST API with correct JSON handling and status codes.

node.jsSolarsquare
Node.js Input Validation for JSONMedium

Assesses how you prevent invalid or malicious inputs from reaching business logic.

node.jsSolarsquare
More Coding questions with a free account
2
System Design3 questions · ~24 min
Update Missing Resource HandlingMedium

Assesses your approach to edge cases and correctness of API behavior.

error handlingapi designresource managementSolarsquare
HTTP Status Codes for OutcomesMedium

Assesses your ability to map application results to correct HTTP responses.

error handlingapi designSolarsquare
More System Design questions with a free account
3
More topics6 questions · ~49 min
Production-Ready JSON PayloadsMedium

Evaluates your handling of serialization, validation, and response consistency for JSON APIs.

api designSolarsquare
REST API Security ConsiderationsHard

Tests your knowledge of securing public APIs against common threats and misconfigurations.

best practicesapi securitySolarsquare
MongoDB Schema for Efficient QueriesMedium

Evaluates your ability to design MongoDB schemas that optimize query performance.

query optimizationSolarsquare
Securing Endpoints From VulnerabilitiesHard

Tests your practical security measures for hardening REST endpoints.

vulnerabilitiesendpoint securityapi securitySolarsquare
More questions with a free account

Sign up to see every question

Create a free account to unlock this list and practice real interview questions.

Get my prep plan
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Checked vs Unchecked ExceptionsEasy
Practice
Practice drill

Compare checked and unchecked Java exceptions by retrieving their compile-time handling requirements and representative examples.

error handlingjavadatabase conceptsTThe CardWalmart Labs
SQL Customer-Specific Error MessagesMedium
Practice
Practice drill

Use customer data and payment error codes to return tailored SQL error messages for failed payment attempts.

error handlingnull handlingJoinsGainwell Technologies
Optimizing Slow SQL QueriesHard
Practice
Practice drill

Optimize a PostgreSQL transaction query that filters, aggregates, ranks, and returns top merchants efficiently on large tables.

Performance Tuningdatabase optimizationlarge datasetsSprinter HealthSentiLinkAutodesk
The finish line: interview-readyComplete all 14 questions plus 3 hands-on drills to finish this plan.