Let’s build something together

I’m Egor Kostenko - a senior Unity developer with 7+ years shipping mobile, WebGL, and PC games. Gameplay and meta-game systems, ECS/DI architecture, performance, and AI-assisted engineering.

Experience

7+ years

Shipped

6 titles

Platforms

Mobile · WebGL · PC

Work with me →Download CV ↗ekostenkodev@gmail.com ↗

How I contributeUnity / C#

Gameplay systems that ship

Combat, progression, economy, UI, and live-game features.

Architecture built for change

Modular, data-driven systems that stay manageable as the game grows.

Production-minded engineering

Profiling, optimization, stabilization, and release support.

View selected work →

01 — Collaboration

What I can help with

Bring me in for a single system, a quick prototype, or an ongoing collaboration.

Movement, combat, abilities, cameras, and the game feel that ties them together.

Unity·C#·Game feel

Progression, economy, rewards, and loadouts — plus the content pipelines that feed them.

Progression·Economy·Live ops

ECS and DI foundations that keep a codebase shippable as the team and the feature list grow.

ECS·VContainer·UniTask

Profiling CPU, memory, and loading paths until the game holds its frame budget on real devices.

Profiler·Memory·Mobile

LLM coding agents wired into a real project — with context, custom tooling, staged reviews, and validation I stay accountable for.

LLM agents·Context

Fast, playable proofs of concept to test an idea before you commit time and budget to it.

R&D·Mechanics

Devlogs, breakdowns, interviews, and podcasts about how games are built.

YouTube·Talks

Open to·Contract & freelance·Full-time (remote or relocation)·Collaborations·Prototype & R&D consulting·Unity gameplay / systems·YouTube collabs·Interviews, podcasts & talks

Core: C#·Unity·Gameplay systems·Meta-game systems·uGUI·UI Toolkit·TextMeshPro·Editor tooling
Architecture: OOP·SOLID·ECS (LeoECS, Entitas, DOTS)·DI (VContainer, Zenject)·UniTask·UniRx / R3
Rendering: URP·Shader Graph·Cinemachine·DOTween
Platforms: WebGL·iOS·Android·PC / Steam·REST APIs·Firebase·AppsFlyer·Analytics & ad SDKs
Production: Git·CI/CD·Addressables·Unity Profiler·Memory Profiler·TeamCity·Unity batch mode
AI-assisted: LLM coding agents·Context engineering·Custom CLI & Unity tooling·Staged review & validation

Experience: 7+ years shipping games
Shipped: 6 titles · 3 studios
Platforms: Mobile · WebGL · PC / Steam
Work mode: Remote
Now building: It’s Breaking Out
Weapon of choice: Unity + C#
Education: B.Sc. Software Engineering
Languages: Russian (native) · English (B2)