Unreal Engine — Interview questions

• AI & Behavior Trees

  Unreal Engine AI — Behavior Trees, Blackboard, AIController, NavMesh, AI Perception, EQS, and techniques for debugging and scaling AI characters.

  12 questions

• Blueprints

  Blueprints versus C++ in Unreal Engine — when to use which, performance tradeoffs.

  12 questions

• Gameplay Ability System

  Unreal's Gameplay Ability System — abilities, effects, attributes, gameplay tags, replication, prediction, and designer-facing data workflows.

  18 questions

• Gameplay Framework

  Unreal's gameplay framework classes — Actor, Pawn, Character, controllers, GameMode, GameState, PlayerState, components and subsystems.

  23 questions

• Gameplay Math

  Vector and rotation math for gameplay in Unreal Engine — dot and cross products, transforms, world and local space, interpolation, line traces, and quaternions.

  15 questions

• Garbage Collection

  Unreal Engine's garbage collector — how it traces UObject references, keeping objects alive, weak references, ownership, and debugging dangling-pointer crashes.

  16 questions

• Performance & Profiling

  Profiling CPU and GPU bottlenecks in Unreal Engine, optimizing Tick, Blueprints, animation, collision, UI, draw calls, LODs, occlusion, instancing, and memory.

  22 questions

• Rendering & Materials

  Unreal Engine 5 rendering — materials and instances, the Render Thread, shader compilation, Nanite, Lumen, the RHI, and GPU profiling.

  13 questions

• Networking & Replication

  Unreal Engine's networking model — replication of properties and Actors, RPCs, server authority, relevancy, dormancy, and the Replication Graph.

  21 questions

• System Design

  Designing gameplay systems in Unreal Engine — inventory, combat, abilities, quests, save/load, multiplayer, and large-project structure.

  17 questions

• UObject & Reflection

  Unreal's UObject base class, the reflection system, the UCLASS/UPROPERTY/UFUNCTION macros, and object lifecycle.

  20 questions