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ILLIA OKOLSKYI
Unity Developer ​
Ukraine, Lviv | LinkedIn: Illia Okolskyi | Email: [open contact info](look above in the "contact info" section)

PROFESSIONAL SUMMARY
Unity Developer with 5+ years of experience, primarily in mobile game development, with additional projects
delivered for WebGL, AR/VR, and Web3. Skilled in gameplay programming, debugging, and building custom Unity
Editor tools. Versatile in both maintaining existing codebases and developing systems from scratch. Comfortable
working across platforms and devices, including projects utilizing mobile device sensors.

TECHNICAL SKILLS
Core Technologies : Unity, C#, OOP, SOLID principles, design patterns, ScriptableObjects, Unity Editor extensions,
UI/UX implementation
Tools & Frameworks : Git (incl. submodules), SourceTree; some use of Unity Test Framework, WebView, Mirror
Networking, and plugin development
Platforms : Primarily mobile (iOS, Android); have also worked with WebGL (with web app integration), AR (ARKit,
EasyAR), and VR (Oculus Rift)
Other Technologies : Mobile device sensors (e.g. gravity, attitude); AI tools – ChatGPT (daily), Claude and
Perplexity (occasional use)

PROFESSIONAL EXPERIENCE
Freelance – Strong Middle / Senior Unity Developer – (August 2023 - Present)
Worked on multiple NDA-bound projects across mobile and desktop platforms:
○​ Mobile game: Developed gameplay systems using mobile device sensors (e.g. gravity, attitude).
○​ Presentation app (Windows): Built a multi-layered map interface for building placement; integrated AI system to
simulate user decisions across layered spatial data.
○​ Android SDK plugin: Developed a Unity-compatible SDK with WebView integration for embedding custom logic into
Android apps.
Stepico (Remote) – Middle Unity Developer – (February 2023 - May 2023)
○​ Refactored and improved quest system in a mobile match-2-3-4 + idle resource management game.
○​ Fixed critical timer desynchronization issues, significantly improving gameplay consistency.
○​ Focused on debugging and bug-fixing tasks across gameplay systems and UI.
Asylum (Remote) – Middle Unity Developer – (March 2022 - October 2022)
○​ Integrated 2D and 3D Unity games into a React-based web app using WebGL.
○​ Built NFT-based systems with assets (3D models, sprites, metadata) dynamically loaded from IPFS, and created Unity
Editor tools to streamline their integration.
○​ Mentored a junior Unity developer for 2 months, supporting onboarding and project adaptation.
iLogos (Remote) – Strong Junior / Pre-Middle Unity Developer – (August 2021 - January 2022)
○​ Contributed to an idle battler game, focusing on UI improvements and visual bug fixes.
○​ Refactored dialog system and addressed timer synchronization issues in hidden game mechanics.
○​ Developed Unity Editor tools to simplify dialog asset management and time-based visual feedback.
Playcus (Remote) – Strong Junior / Pre-Middle Unity Developer – (July 2020 - May 2021)
○​ Sole Unity developer maintaining and updating three interconnected mobile games with shared systems and features.
○​ Delivered UI/UX updates, resolved critical bugs, and ensured codebase consistency using Git submodules.
○​ Created custom Unity Editor tools to streamline asset integration, bug tracking, and internal testing.
Dream Team Studio (Kharkiv, Ukraine) – Junior Unity Developer – (October 2019 - June 2020)
○​ Contributed to a live match-3 game with theme park-building features, fixing bugs and adding content.
○​ Developed internal tools in Unity Editor to streamline debugging and game data management.
Faifly LLC (Kharkiv, Ukraine) – Junior Unity Developer – (November 2017 – September 2019)
○​ Casual Economic Simulator – Sole Unity developer; built core gameplay and internal editor tools.
○​ AR Chess (iOS) – Developed AR experience using ARKit with multiplayer support via backend integration.
○​ VR Chat (Oculus Rift) – Contributed to features and bugfixing across core systems.

Languages : English (Upper-Intermediate), Ukrainian (Native), Russian (Fluent)
Education : Bachelor of System Analysis (National Technical University "Kharkiv Polytechnic Institute")