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backend integration Interview Questions

The most frequently asked backend integration questions across all roles and companies, ranked by real interview frequency. Updated daily.

46questions
~6htotal time
49companies covered
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1
System DesignStart here. 27 questions · ~218 min
HTTP Methods BasicsEasy

Explain the standard HTTP methods, their semantics, safety, idempotency, and common API usage.

backend integrationindustry standardsAPI interactionGoogle
Azure Databricks and Data FactoryHard

Explain how Azure Data Factory orchestrates Azure Databricks jobs, parameters, dependencies, monitoring, and failure recovery.

backend integrationcloud architecturedata ingestionAccenture Federal Services
Build Middleware for Third-Party TicketsHard
Recently asked

Design middleware that normalizes third-party ticketing APIs and uses ML to route, deduplicate, and prioritize ticket data.

backend integrationapi gatewayintegrationSeatgeek
Interoperability Between Legacy EHRs and CloudHard

Design a secure, observable interoperability layer connecting legacy EHR systems with Jaan Health/Phamily cloud services.

backend integrationindustry standardsdata ingestionJJaan Health/Phamily
SDK Requirements Then BuildHard

Design, implement, test, and document an SDK that reliably wraps an external API.

backend integrationapi documentationarchitecture patternsBabylist
System design: account deletion across AmazonHard

Design a reliable, auditable workflow that deletes an Amazon account and propagates the request across Amazon services.

backend integrationdata securitydistributed systemsAmazon
Design Kindle SyncHard

Design reliable Kindle page-position synchronization across a user's devices, including offline updates and conflicting writes.

backend integrationdistributed systemsoffline syncAmazon Web Services
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2
Coding5 questions · ~40 min
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3
Execution5 questions · ~40 min
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4
Technical Fundamentals4 questions · ~32 min
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5
More topics5 questions · ~40 min
Owning Offline Sync Under AmbiguityMedium

Tests ownership, prioritization, and influence in an ambiguous mobile offline-sync problem with competing technical and product trade-offs.

backend integrationdata persistenceoffline syncSAPAirwallex PtyHopper
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Nth Salary SQLMedium
Practice
Recently asked
Practice drill

Use ranking to return the nth distinct salary from an employee table.

system designnull handlingsqlBBirdeyeAkamai
SQL and Tableau UsageMedium
Practice
Practice drill

Summarize each analyst's SQL activity and Tableau asset usage with joins, aggregations, and CASE classification.

analytics toolsexperienceJoinsDatadog
Securing Sensitive DataHard
Practice
Practice drill

Return active, non-expired dataset grants while enforcing MFA and role requirements for sensitive data.

data securitydatabase managementdata managementDDelivery Hero
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