Сергій

Serhii Chekun
Unity Developer
[open contact info](look above in the "contact info" section) [open contact info](look above in the "contact info" section) Rivne, Ukraine

Portfolio github.com/Chekushka [open contact info](look above in the "contact info" section)

Summary
Experienced Unity Developer with 3+ years of experience shipping high-performance mobile and web games.
Successfully published multiple titles that have each achieved over 50,000 downloads. Proficient in C#,
performance optimization (DOTS), monetization SDKs (Admob, IronSource), and creating polished player
experiences using Cinemachine and DOTween. Complemented by a strong background in technical
mentorship and education.

Skills
Core & Languages Unity Engine
C#, .NET, OOP, SOLID Principles, Design Patterns, Unity 2D/3D, DOTS (ECS, Job System, Burst
Algorithms & Data Structures, LINQ. Compiler), New Input System, Physics,
Coroutines/Async, Profiling & Optimization,
Plugins & Assets WebGL.
DOTween, Cinemachine, Feel, TextMeshPro,
Addressables. SDKs & Integrations
Mobile Monetization (AdMob, IronSource, Unity
Tools Ads), Social Integration (Facebook SDK, Telegram
Git / GitHub, Visual Studio, JetBrains Rider, Figma, API), REST API, JSON, Custom Analytics & Auth
Trello/Jira. Systems.

English
Upper-Intermediate

Professional Experience
05/2023 – Present Self-Employed
Ukraine Unity Developer
Orchestrated full-cycle game development for mobile and web platforms,
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launching multiple titles that each surpassed 50,000 downloads.
Engineered and integrated custom backend solutions, including analytics
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platforms, referral systems, and user authorization services to support scalable
player bases.
Developed a unique web-based puzzle game with seamless Telegram Bot
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integration, showcasing cross-platform versatility.
Implemented robust monetization and social features using AdMob, IronSource,
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and Facebook SDKs, ensuring profitable project economics.
Optimized game performance and code architecture by leveraging modern Unity
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technologies like DOTS and the New Input System.
Enhanced player engagement and "game feel" by utilizing advanced toolkits such
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as Cinemachine, DOTween, and Feel.

12/2023 – 05/2025 GoITeens
Ukraine Unity Mentor / Tutor
Taught C# programming and Unity game development fundamentals to
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teenagers, breaking down complex technical concepts into accessible lessons.
Supervised the full development lifecycle of student projects, guiding them from
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initial concept to finished, playable games.
 Assisted students in implementing ambitious mechanics and solving technical
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challenges, resulting in high-quality portfolio projects.
Conducted code reviews and taught best practices in coding and project
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architecture.

06/2021 – 08/2022 Self-Employed
Ukraine Trainee/Junior Unity Developer
Developed multiple mobile game prototypes to master Unity’s core mechanics,
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physics, and UI systems.
Gained hands-on experience with C# scripting, OOP principles, and algorithm
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implementation.
Researched and integrated essential Unity plugins and assets to streamline the
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development process.

Education
09/2021 – 01/2023 Master of Computer Science
Rivne National University of Water Management and Natural Resources
Advanced studies focused on software architecture, system analysis, and research
in modern development methodologies.

09/2017 – 07/2021 Bachelor of Computer Science
Lviv Lviv Polytechnic National University
Acquired a solid foundation in software engineering principles, focusing on
algorithms, data structures, and Object-Oriented Programming.