PRGX Global Software Engineer Interview Questions

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

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

Explain the differences between interfaces and abstract classes in Java and when to use each.

Interface vs Abstract Class

Easy

Explain how interfaces and abstract classes differ in purpose, inheritance model, and implementation sharing.

ArraysStrings

PRGX Global

Implementing Singleton in Java

Easy

Explain how to implement a singleton in Java, including thread safety, lazy initialization, and common pitfalls.

RecursionHash Tables

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Method Overloading vs Overriding

Easy

Compare method overloading and method overriding in object-oriented programming, including binding, inheritance, and polymorphism.

javaabstractionoop

PRGX Global

Maximum Sum Subarray

Medium

Tests dynamic programming or prefix-sum style reasoning for core coding ability.

MathArraysGreedy

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Explaining OOP Through Project Decisions

Medium

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

projectstechnical experienceoop

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Resolving Senior Technical Disagreement

Hard

Tests how you influence senior stakeholders when they disagree on technical direction, while preserving trust and driving a decision.

Influence Without AuthorityConflict ResolutionStakeholder Management

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