I fix crashes and bottlenecks so your game ships faster.
10+ years Unity/C# specialist, proven by award-winning shipped titles and console ports.
Hands-on support from day one — I do the work personally.
Senior C# expertise for Unity, Godot, and Custom Engines
Performance Optimization
Stop losing players to stutter, crashes, and long loads.
- Profiling and frame-time analysis
- Memory usage reduction and leak hunting
- Smarter rendering and batching
- Targeted Burst/Jobs/ECS where it actually helps
Custom Editor Tooling
Your team wastes time on work the tools should do.
- Unity Editor extensions and inspectors
- Godot Editor plugins and utilities
- Custom CLI tooling that integrates with your game
- Automated fixers, validators, and reports
Automation & Pipelines
Less repetition, fewer regressions. Build, test, and ship with confidence.
- Automated builds & release packaging
- Asset import & processing pipelines
- Compile & iteration time optimization
- Cross-platform build support (Desktop/Mobile/Switch)
Architecture Audit & Improvements
Technical debt is a cost bomb. Defuse it before milestones slip.
- Codebase review and risk assessment
- Refactor plans aligned with milestones
- Design patterns that fit your team
- Mentoring and pair‑refactoring sessions
What I Shipped
Penko Park on Nintendo Switch: Ported by me, stable and performance-optimized (60 FPS).
Under the hood...
- Used a C# ECS (Entity component system) to cut frame time where it mattered
- Custom editor tooling to speed up level design and iteration
- Automated content validation and build pipelines to prevent regressions
How Engagements Work
Initial Contact
Show me the pain. I estimate impact and risk.
Discovery Call
Focused technical review to outline the fastest path to impact.
Proposal & Contract
Clear scope, cadence, and deliverables -- no surprises.
Immediate Impact
Hands-on fixes, tools, and optimizations -- value from week one.
Why Choose Me?
I'm Konstantin Kopka, a German-born, Japan-based game developer with deep C# experience across engines and platforms.
I like pragmatic solutions: profile first, fix what matters, and ship improvements with minimal disruption. I work directly with your team and adapt to your deadlines.
Proven Optimization Track Record
From broken builds to stable frame rates... measured gains from profiling‑driven work.
Tools that pay for themselves
Editor automation removes drag, prevents regressions, and speeds shipping.
Clear, Calm and Multilingual Collaboration
Transparent plans, precise reviews, mentoring when useful. English, German, Japanese.
Need Senior C# Help On Your Game?
Let's set up a practical plan for improvements that help you ship faster.
Let's Talk About Your Project
Get in Touch
Technical Inquiries
[email protected]I'll personally get back to you as soon as possible, usually within 24 hours.