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Updated weekly · Last refresh Oct 17

Sii Group Italy Software Engineer Interview Questions

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

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1
CodingStart here. 7 questions · ~57 min
Abstract Classes vs InterfacesEasy

Compare Java abstract classes and interfaces, including inheritance rules, shared behavior, and when each is the better design choice.

javaabstractionoopSii Group Italy
REST CRUD With Stored ProceduresHard

Tests your ability to implement a CRUD REST API and integrate it with database stored procedures.

apiSii Group Italy
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2
Behavioral & Leadership30 questions · ~245 min
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3
More topics7 questions · ~57 min
4-Tempo Engine and Exhaust LineMedium

Evaluates your understanding of core technical concepts outside pure software.

Sii Group Italy
Angular State Management FeaturesEasy

Tests your practical knowledge of Angular features used in large-scale enterprise front ends.

technical experienceFrameworksSii Group Italy
Design CRUD API From ScratchMedium

Tests your ability to translate relational data into a clean CRUD API design with sensible defaults.

Technical Fluencysolution designrequirementsSii Group Italy
Architectural Decisions With Legacy CodeHard

Evaluates system design thinking and practical integration strategies for legacy systems.

Sii Group Italy
Optimize Flight Tracking SchemaHard

Tests advanced database modeling, indexing, and performance tuning for high-throughput systems.

Performance Tuningstar schemaData ModelingSii Group Italy
Dependency Injection ArchitectureMedium

Tests your understanding of DI patterns and how they improve modularity, testability, and maintainability.

best practicestechnical experiencearchitectureSii Group Italy
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Refactoring a Slow QueryMedium
Practice
Practice drill

Refactor a slow Candid Health claims query using pre-aggregation, latest-event logic, and monthly payer metrics.

Performance Tuningdatabase optimizationCTEsCandid Health
Advanced Data Modeling for PerformanceHard
Practice
Practice drill

Calculate Citi business-unit performance variance against targets and identify the largest shortfalls.

business problemdata managementtechnical experienceCiti
Automate with Your Programming LanguageMedium
Practice
Practice drill

Count Citi workflow task types with more than one exception and show the latest review date.

Data ManipulationAutomationtechnical experienceCiti
The finish line: interview-readyComplete all 44 questions plus 3 hands-on drills to finish this plan.