Just0Simon
Ivan Hoina | Unity Game Developer Portfolio
Unity Game Developer
Warsaw, Poland | Open to Remote
LinkedIn: linkedin.com/in/ivan-hoina/
About Me
Unity Game Developer with 3+ years of experience in mobile and PC game development. Specialized in hyper-casual games, gameplay programming, UI development, and performance optimization. Proven ability to deliver prototypes, update legacy projects, and publish full games. Passionate about creating engaging player experiences and bringing ideas from concept to release.
Featured Projects
đšī¸ Local Multiplayer Arena (Unity, Netcode for GameObjects)
A technical demonstration of advanced Unity multiplayer development, built as a test assignment for a Unity developer role. This project showcases a local multiplayer game with a Host-Client architecture, server-authoritative logic, and real-time synchronization using Netcode for GameObjects.
Key Features:
- Host-Client networking with simple UI for session management
- WASD player movement, third-person camera (Cinemachine), health system
- Server-driven enemy AI: spawns, targets, rotates, and shoots projectiles
- Networked projectiles with collision-based damage
- Minimalist arena: plane, cube obstacles, baked NavMesh
- Tech: Unity 6000.0.42f1 LTS, Netcode for GameObjects, Cinemachine, New Input System, AI Navigation, Unity Physics
Highlights:
- Clean, maintainable C# code (SOLID, best practices)
- Server-authoritative gameplay for robust multiplayer
- Designed for rapid evaluation by employers
Local Multiplayer project preview. Click to watch the gameplay video.
Repository: View on GitHub
âĢ The Abyssal Truth
Experience
Led a team of five in developing a 3D first-person horror puzzle prototype set in a laboratory on an island. Worked alongside a game designer, an art generalist, and two supporting developers, coordinating task distribution and ensuring smooth collaboration. Took the lead on gameplay implementation and guided developers through solving core technical challenges.
Key Features:
- First-person controller
- Level design with underground and ground levels
- Sound and visual effects for immersive gameplay
- Main menu, in-game HUD
- Complex system that monitors state of all devices in laboratory and provides player information
- Broken devices can be fixed, but players must separate truth from lies to determine what is broken
Project version
Unity 6000.0.25f1, tested on Windows 11
The Abyssal Truth gameplay preview.
Click to view the game jam project page.
Repository: View on GitHub
đââī¸ 3D Runner (Unity)
A simple one-level 3D runner developed in Unity as a test assignment. The project demonstrates modular code structure, clean C# practices, and a responsive UI, built with minimal dependencies and custom/built-in Unity assets.
Key Features:
- Auto-run forward movement with strafe & jump controls (swipe/mouse drag)
- Obstacles: spikes, walls, barriers, mines
- Coin system with animated collection & score counter
- Main menu, in-game HUD, game over screen with retry/exit
- Responsive UI for multiple screen sizes
- Bonus: coin VFX & obstacle collision effects
Highlights:
- Clean modular architecture (PlayerController, GameManager, UIManager, CollectibleManager)
- Loose coupling via events/ScriptableObjects
- Unity 6000.0.42f1 LTS, tested on Android & Unity Editor
3D Runner gameplay preview. Click to watch the gameplay video.
Repository: View on GitHub
Skills
Technical Skills
- Core: Unity, C#, OOP, SOLID, Data Structures, Dependency Injection, Git
- Unity Specializations: Unity Physics, AI Navigation, UI Canvas, Animations, Tweening, Shader Graph, Scriptable Objects Architecture Pattern
- Networking: Netcode for GameObjects, Photon Fusion
- Tools & Services: Unity Game Services, Firebase, In-App Purchases, DOTween, Zenject, Odin Inspector
- Platforms: Mobile Game Development, iOS Development, Android Development, Mobile Performance Optimization
Soft Skills
- Problem-solving, teamwork, communication, adaptability
- Mentoring, teaching, independence, responsibility
Professional Experience
Unity Developer â Wild Wild Group, Remote | Aug 2025 â Oct 2025
Developed and published hyper-casual iOS games, managing the full production cycle from concept and prototyping to optimization and App Store release. Implemented gameplay mechanics, user interfaces, and integrated third-party SDKs. Optimized games for performance and mobile devices.
Unity Developer â Game Jam Team, Remote | Jan 2025 â Feb 2025
Coordinated a team of five to develop a 3D first-person horror puzzle prototype under time constraints. Implemented core gameplay mechanics and collaborated closely with designers and artists. Delivered a fully playable prototype within the game jam deadline.
Unity Developer â EJAW, Remote | Oct 2024 â Jan 2025 | Project-based
Maintained and updated existing Unity projects, releasing updates on Google Play Store. Fixed post-migration issues and updated SDKs to latest versions. Improved project stability and ensured smooth functionality after platform updates.
Unity Developer â Self-Employed, Remote | Sep 2022 â Oct 2024
Developed personal game projects and taught Unity development to teenagers while expanding technical expertise across multiple game genres and platforms. Developed 3D Runner prototype with modular architecture, swipe controls, obstacle systems, and responsive UI tested on Android. Created Local Multiplayer Arena using Netcode for GameObjects with Host-Client architecture.
Unity Game Developer â 24Play, Kyiv | Feb 2022 â Sep 2022
Developed 8+ hyper-casual games in collaboration with designers and project managers. Implemented gameplay mechanics, UI, animations, SDK integrations, optimized mobile performance, and released commercially.
Education
Bachelor in Information Systems and Technologies
State University of Information and Communication Technologies, Kyiv, Ukraine | 2024
Languages
- Ukrainian (Native)
- Russian (C1)
- English (B2)
- Polish (A2)
Contact
đ§ Email: hoina.ivan@gmail.com
đŧ LinkedIn: linkedin.com/in/ivan-hoina
đ GitHub: github.com/Just0Simon