Олександр

ALEKSANDR KOSINKO
Unity Game Developer
Email: [open contact info](look above in the "contact info" section)
Phone: [open contact info](look above in the "contact info" section)
Location: Rzeszow, Poland

Summary
Unity Game Developer (C#) with 5+ years of commercial experience (7+ total). Shipped and
supported 15+ titles across mobile, consoles (Nintendo Switch, PS4/PS5) and PC (Steam/Epic).
Strong in data-driven gameplay systems, performance/stability, live ops, and SDK/plugin
development (quests/ads/monetization). Comfortable owning features end-to-end and
collaborating cross-functionally. For more information, feel free to check the portfolio.

Skills
●​ Core: Unity, C# / .NET (7 years total, 5 commercial)
●​ Unity: gameplay loop, scripting, animation, particles, materials, UI, pathfinding
●​ Programming Languages: C# (core), C++ and Java (working knowledge)
●​ Architecture: OOP, SOLID, data structures & algorithms, data-driven configs
(ScriptableObjects, JSON, XML)
●​ Platforms: Android, iOS, Nintendo Switch, PS4/PS5, PC (Steam, Epic Games
Store); porting & releases
●​ Integrations: ads, analytics, third-party SDKs/libraries
●​ Third-party Unity tools: Zenject, DOTween, LeanTouch, DoozyUI, Photon PUN2
●​ Networking / Live updates: REST APIs, WebSockets
●​ Tools / DevOps: Git, SVN, CI/CD pipelines (builds + releases)
●​ Mobile tooling: Android Studio, Xcode
●​ Additional engines (working knowledge): Unreal Engine and Godot
●​ Backend (working knowledge): Node.js + TypeScript
●​ 3D / Art pipeline (working knowledge): real-time rendering pipelines; Blender,
Maya, ZBrush, Photoshop
●​ Languages: Ukrainian (Native), English (Advanced), Polish (Advanced), Bulgarian
(Basic)

Experience
Treasure Play​
Unity Developer, Full-time​
Jul 2024 – Feb 2026, Remote (Singapore)
●​ Unity development for mobile titles and platform features.
●​ Built a plug-and-play Unity monetization plugin, enabling fast and consistent platform
integration across teams. Also adopted by external partners.
●​ Implemented backend changes in Node.js/TypeScript (from small fixes to full
end-to-end features) supporting the app and services.

Simplicity Games​
Unity Developer, Full-time​
Apr 2021 – Jul 2024, Hybrid (Rzeszow, Poland)
●​ Shipped titles across Android, iOS, Nintendo Switch, PlayStation, and PC;
collaborated with publishers on release requirements.
●​ Built and iterated on prototypes; productionized successful concepts into full
features/systems.
●​ Supported live titles: troubleshooting, bug fixing, and delivering updates post-launch.
Recommendations
References available on request. Full recommendations can be found on my LinkedIn:
[open contact info](look above in the "contact info" section)

●​ Alex Arias - CEO & Co-Founder, Treasure Play: “Exceptional engineer with deep
Unity expertise and strong ownership; trusted with end-to-end features including
deployment; delivered with speed, quality, and clarity.”
●​ Andreas Risberg - Co-Founder (COO/CPO), Treasure Play: “Proactive, agile
engineer who thrives in fast-paced environments and consistently rises to new
challenges to solve complex problems.”
●​ Sam Alonso - Tech Lead, Whatwapp: “Great Unity dev with a strong
problem-solving mindset; picks things up fast, adapts easily, and brings useful
insights to the team.”

Selected Projects & Contributions
More of my contributions, with links and descriptions, are available in my portfolio:
https://starblakout.github.io/Portfolio/

Treasure Play
●​ Plug-and-play Unity monetization plugin: Owned plugin design and development;
delivered quests + ads functionality for Unity games.
●​ Summoner’s Siege (Mobile): Delivered and polished gameplay systems and core
game features.
●​ Treasure Play platform app: Contributed to research, design, and implementation
of the gamified platform app.

Simplicity Games
●​ Brain Show: Party Quiz: Co-developed from the ground up; platform-specific work
for Nintendo Switch, Steam, Epic Games Store, PS4, and PS5.
●​ Punch Bob: Live ops on Android/iOS: bug fixes, feature updates, and publisher
coordination (Azur Games).
●​ Volleyball Challenge: Stability improvements, ongoing maintenance and new
features.
●​ The Real Juggle: Shipped new features under publisher supervision (Lion Studios).
●​ Speedway Heroes: Bug fixing, code refinement, and feature development.

Education
University of Information Technology and Management in Rzeszow​
Bachelor of Engineering, Information Technology​
Oct 2019 - Mar 2023

Taras Shevchenko National University of Kyiv​
Associate’s degree, Software Development​
Sep 2015 - Jun 2019

Links
●​ LinkedIn: [open contact info](look above in the "contact info" section)
●​ Portfolio: https://starblakout.github.io/Portfolio/
●​ My solo game: https://starblakout.github.io/ImmortalCrusade/
●​ GitHub: https://github.com/sTarBlakout
●​ Itch.io: https://starblackout.itch.io/
●​ Sketchfab: https://sketchfab.com/sTarBlakout