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I am a Senior Gameplay Engineer with extensive experience developing robust game systems and architecting complex mechanics. My core expertise lies in Unreal Engine (both UE4 and UE5) and C++ development. What differentiates me from other developers is my heavy focus on high-performance solutions, cross-platform optimization, and network reliability. I don't just build features; I ensure they run flawlessly under strict hardware constraints. For example, I have successfully optimized gameplay to achieve a stable 30 FPS on the Nintendo Switch by eliminating memory leaks and refactoring expensive Tick-based logic. My most important skills and sector experience include: Multiplayer & Combat Systems: Building replicated combat systems using the Gameplay Ability System (GAS), including custom Attributes and server-side validation to prevent cheating. Console Porting & Compliance: Deep experience with PS4/PS5, Xbox, and Switch porting, including platform-agnostic Save/Load handling and dynamic Input Systems. High-Performance UI: Implementing UMG/Slate interfaces by binding C++ delegates directly to avoid tick-based updates, alongside creating immersive spatial UI for VR environments. VR & Simulation: Leading the technical development of VR Training Simulators (adopted by the WCO) and developing real-time interactive cockpit dashboards for VR racing. Cloud & Enterprise Solutions: Architecting scalable Pixel Streaming solutions for multi-instance deployments using containerization and load balancing. Employment and project experience: Unreal Engine Developer / C++ Developer Ravatar August 2025 - February 2026 Unreal Engine Developer / C++ Developer KAVA Games October 2024 - July 2025 Unreal Engine Developer / C++ Developer Play Fusion Lab October 2023 - October 2024 Unreal Engine Developer / C++ Developer Walla Walla Studio August 2023 - October 2023 Unreal Engine Developer / C++ Developer MATABOO April 2022 - August 2023 Unreal Engine Developer / C# Developer Department for Specialized Training and Canine Services of the State Customs Service of Ukraine February 2020 - April 2022…I am a Senior Gameplay Engineer with extensive experience developing robust game systems and architecting complex mechanics. My core expertise lies in Unreal Engine (both UE4 and UE5) and C++ development. What differentiates me from other developers is my heavy focus on high-performance solutions, cross-platform optimization, and network reliability. I don't just build features; I ensure they run flawlessly under strict hardware constraints. For example, I have successfully optimized gameplay to achieve a stable 30 FPS on the Nintendo Switch by eliminating memory leaks and refactoring expensive Tick-based logic. My most important skills and sector experience include: Multiplayer & Combat Systems: Building replicated combat systems using the Gameplay Ability System (GAS), including custom Attributes and server-side validation to prevent cheating. Console Porting & Compliance: Deep experience with PS4/PS5, Xbox, and Switch porting, including platform-agnostic Save/Load handling and dynamic Input Systems. High-Performance UI: Implementing UMG/Slate interfaces by binding C++ delegates directly to avoid tick-based updates, alongside creating immersive spatial UI for VR environments. VR & Simulation: Leading the technical development of VR Training Simulators (adopted by the WCO) and developing real-time interactive cockpit dashboards for VR racing. Cloud & Enterprise Solutions: Architecting scalable Pixel Streaming solutions for multi-instance deployments using containerization and load balancing. Employment and project experience: Unreal Engine Developer / C++ Developer Ravatar August 2025 - February 2026 Unreal Engine Developer / C++ Developer KAVA Games October 2024 - July 2025 Unreal Engine Developer / C++ Developer Play Fusion Lab October 2023 - October 2024 Unreal Engine Developer / C++ Developer Walla Walla Studio August 2023 - October 2023 Unreal Engine Developer / C++ Developer MATABOO April 2022 - August 2023 Unreal Engine Developer / C# Developer Department for Specialized Training and Canine Services of the State Customs Service of Ukraine February 2020 - April 2022

Vadym Marchuk

Game Developer, Developer, Programmer, +5

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I am a Senior Gameplay Engineer with extensive experience developing robust game systems and architecting complex mechanics. My core expertise lies in Unreal Engine (both UE4 and UE5) and C++ development. What differentiates me from other developers is my heavy focus on high-performance solutions, cross-platform optimization, and network reliability. I don't just build features; I ensure they run flawlessly under strict hardware constraints. For example, I have successfully optimized gameplay to achieve a stable 30 FPS on the Nintendo Switch by eliminating memory leaks and refactoring expensive Tick-based logic. My most important skills and sector experience include: Multiplayer & Combat Systems: Building replicated combat systems using the Gameplay Ability System (GAS), including custom Attributes and server-side validation to prevent cheating. Console Porting & Compliance: Deep experience with PS4/PS5, Xbox, and Switch porting, including platform-agnostic Save/Load handling and dynamic Input Systems. High-Performance UI: Implementing UMG/Slate interfaces by binding C++ delegates directly to avoid tick-based updates, alongside creating immersive spatial UI for VR environments. VR & Simulation: Leading the technical development of VR Training Simulators (adopted by the WCO) and developing real-time interactive cockpit dashboards for VR racing. Cloud & Enterprise Solutions: Architecting scalable Pixel Streaming solutions for multi-instance deployments using containerization and load balancing. Employment and project experience: Unreal Engine Developer / C++ Developer Ravatar August 2025 - February 2026 Unreal Engine Developer / C++ Developer KAVA Games October 2024 - July 2025 Unreal Engine Developer / C++ Developer Play Fusion Lab October 2023 - October 2024 Unreal Engine Developer / C++ Developer Walla Walla Studio August 2023 - October 2023 Unreal Engine Developer / C++ Developer MATABOO April 2022 - August 2023 Unreal Engine Developer / C# Developer Department for Specialized Training and Canine Services of the State Customs Service of Ukraine February 2020 - April 2022…I am a Senior Gameplay Engineer with extensive experience developing robust game systems and architecting complex mechanics. My core expertise lies in Unreal Engine (both UE4 and UE5) and C++ development. What differentiates me from other developers is my heavy focus on high-performance solutions, cross-platform optimization, and network reliability. I don't just build features; I ensure they run flawlessly under strict hardware constraints. For example, I have successfully optimized gameplay to achieve a stable 30 FPS on the Nintendo Switch by eliminating memory leaks and refactoring expensive Tick-based logic. My most important skills and sector experience include: Multiplayer & Combat Systems: Building replicated combat systems using the Gameplay Ability System (GAS), including custom Attributes and server-side validation to prevent cheating. Console Porting & Compliance: Deep experience with PS4/PS5, Xbox, and Switch porting, including platform-agnostic Save/Load handling and dynamic Input Systems. High-Performance UI: Implementing UMG/Slate interfaces by binding C++ delegates directly to avoid tick-based updates, alongside creating immersive spatial UI for VR environments. VR & Simulation: Leading the technical development of VR Training Simulators (adopted by the WCO) and developing real-time interactive cockpit dashboards for VR racing. Cloud & Enterprise Solutions: Architecting scalable Pixel Streaming solutions for multi-instance deployments using containerization and load balancing. Employment and project experience: Unreal Engine Developer / C++ Developer Ravatar August 2025 - February 2026 Unreal Engine Developer / C++ Developer KAVA Games October 2024 - July 2025 Unreal Engine Developer / C++ Developer Play Fusion Lab October 2023 - October 2024 Unreal Engine Developer / C++ Developer Walla Walla Studio August 2023 - October 2023 Unreal Engine Developer / C++ Developer MATABOO April 2022 - August 2023 Unreal Engine Developer / C# Developer Department for Specialized Training and Canine Services of the State Customs Service of Ukraine February 2020 - April 2022

Available to hire

I am a Senior Gameplay Engineer with extensive experience developing robust game systems and architecting complex mechanics. My core expertise lies in Unreal Engine (both UE4 and UE5) and C++ development.
What differentiates me from other developers is my heavy focus on high-performance solutions, cross-platform optimization, and network reliability. I don’t just build features;
I ensure they run flawlessly under strict hardware constraints. For example, I have successfully optimized gameplay to achieve a stable 30 FPS on the Nintendo Switch by eliminating memory leaks and refactoring expensive Tick-based logic.
My most important skills and sector experience include:
Multiplayer & Combat Systems: Building replicated combat systems using the Gameplay Ability System (GAS), including custom Attributes and server-side validation to prevent cheating.
Console Porting & Compliance: Deep experience with PS4/PS5, Xbox, and Switch porting, including platform-agnostic Save/Load handling and dynamic Input Systems.
High-Performance UI: Implementing UMG/Slate interfaces by binding C++ delegates directly to avoid tick-based updates, alongside creating immersive spatial UI for VR environments.
VR & Simulation: Leading the technical development of VR Training Simulators (adopted by the WCO) and developing real-time interactive cockpit dashboards for VR racing.
Cloud & Enterprise Solutions: Architecting scalable Pixel Streaming solutions for multi-instance deployments using containerization and load balancing.
Employment and project experience:
Unreal Engine Developer / C++ Developer Ravatar August 2025 - February 2026 Unreal Engine Developer / C++ Developer KAVA Games October 2024 - July 2025 Unreal Engine Developer / C++ Developer Play Fusion Lab October 2023 - October 2024
Unreal Engine Developer / C++ Developer Walla Walla Studio August 2023 - October 2023
Unreal Engine Developer / C++ Developer MATABOO April 2022 - August 2023 Unreal Engine Developer / C# Developer Department for Specialized Training and Canine Services of the State Customs Service of Ukraine February 2020 - April 2022

Skills

Unreal Engine 4

C++

Game Design

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

Ukrainian

Fluent

English

Advanced

Work Experience

Unreal Engine Developer / C++ Developer at Ravatar Cyprus

August 1, 2025 - February 1, 2026

Architected scalable Pixel Streaming solution for multi-instance deployments, using containerization and load balancing for cloud environments. Integrated NVIDIA Audio 2F ACE and MetaHuman SDKs via custom C++ wrappers to achieve low-latency lip-sync. Analyzed GPU frame timing with Unreal Insights and implemented DSLS/R TX to improve framerate at high resolutions. Implemented high-performance UI by binding C++ delegates to UMG to avoid tick-based HUD updates.

Unreal Engine Developer / C++ Developer at KAVA Games Ukraine

October 1, 2024 - July 1, 2025

Built a replicated combat system using the Gameplay Ability System (GAS), implementing custom Attributes, Effects (GE), and C++ Ability logic for 1v1 / 3v3 modes. Optimized network replication by server-side validation logic for environmental destruction and session management to prevent cheating and ensure game state consistency. Implemented high-performance UI by binding C++ delegates directly to UMG, avoiding tick-based HUD updates.

Unreal Engine Developer / C++ Developer at Play Fusion Lab Ukraine

August 1, 2023 - October 1, 2023

Engineered core gameplay and immersive spatial UI systems for Rebel Cars (UE5 VR), implementing interactive cockpit dashboards and VR-optimized menus (UMG/ Slate) while maintaining high-performance vehicle physics. Rendered 100,000+ stars in real-time for a galaxy simulation by leveraging Hierarchical Instanced Static Meshes and data-oriented design patterns to minimize draw calls. Developed a high-fidelity Souls-like prototype for PlayStation 5, implementing complex melee combat logic and HUD elements to ensure console performance.

Unreal Engine Developer / C++ Developer at Walla Walla Studio Ukraine

April 1, 2023 - August 1, 2023

Identified and resolved CPU bottlenecks by moving heavy logic from the Game Thread to sync tasks; created cinematic tools extending the Unreal Sequence Recorder to enable seamless transitions between gameplay and cutscenes. Designed a platform-agnostic Save/Load system and managed synchronization for VR gameplay.

Unreal Engine Developer / C# Developer at State Customs Service of Ukraine (Department for Specialized Training and Canine Services)

February 1, 2020 - April 1, 2022

Led technical development of a VR Training Simulator adopted by the World Customs Organization (WCO). Built a suite of WPF (.NET) assessment tools to automate personnel grading and qualification tracking. Optimized 360° video playback within UE4 and integrated third-party SDKs for analytics, ads, and in-app purchases across multiple mobile projects.