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I will fix unity build error, unity crash, unreal bug, unity debugging
James Simon
About this gig
Stuck on a bug that's been ruining your game for days? I'll find it and fix it fast.
I specialize in debugging Unity (C#) and Unreal Engine (Blueprints + C++) projects. From null reference exceptions and build failures to physics glitches, UI issues, performance drops, and crashes I diagnose the root cause, fix it, and explain what went wrong.
No guessing. No quick hacks. Clean fixes with documentation
BUGS & ERRORS I FIX:
- Null Reference Exception, Missing Reference Exception, Index Out Of Range
- Unity build errors Android/iOS SDK, Gradle, APK signing failures
- Physics bugs clipping, tunneling, jittering, rigidbody misbehavior
- Animation errors wrong state transitions, broken animator controllers
- UI/Canvas bugs misaligned elements, broken scaling, unresponsive buttons
- Performance issues FPS drops, memory leaks, excessive draw calls
- Unreal Engine Blueprint errors broken node graphs, casting failures
- Input system bugs input not registering, dual-input conflicts
- Scene management errors loading failures, object persistence issues
- Ad & plugin integration errors AdMob, Firebase, third-party SDKs
If there are multiple issues, message me so we can agree on a custom offer.
Get to know James Simon
James Simon
Game Developer for Unity, Roblox, Godot and UE5 Projects
- FromUnited Kingdom
- Member sinceApr 2026
- Avg. response time1 hour
Languages
English, Spanish, French, German, Italian, Dutch, Portuguese
I am a game developer focused on Unity, Roblox, Godot, and Unreal Engine projects. I help create gameplay systems, fix bugs, develop mechanics, and build game features for different types of games.
I work on Unity C# scripting, UE5 Blueprint scripting, Godot 4 GDScript projects, Roblox game systems, debugging, and optimization. Whether you need help creating a new game mechanic, fixing crashes, building a puzzle game, or improving game flow, I can provide reliable solutions.
I focus on writing code, solving technical problems, and making sure games run smoothly across different game engines.
Other Game Development Services I Offer
FAQ
What information do you need to fix my bug?
Share: your Unity/UE project files, a description of the bug (what happens vs. what should happen), and any console error logs or screenshots. The more info, the faster the fix.
What if you can't fix it?
I'll tell you within 24 hours if the bug is outside my scope or requires engine-level access I can't replicate. In that case, I won't charge you. Honesty first.
Can I send just the broken scripts instead of the whole project?
Yes — for script-level bugs (logic errors, null refs, etc.) you can send just the relevant scripts and describe the setup. For scene/physics/build bugs, the full project or a stripped version is needed
Do you fix Unreal Engine Blueprint bugs too?
Yes. I debug Blueprint logic, broken connections, casting errors, event dispatchers, and Blueprint-to-C++ interface issues. Specify your UE version when ordering.
What counts as 'one bug' in the Basic package?
One isolated issue with one root cause. If you describe 'my player falls through the floor and the enemy AI also stops working,' those are likely two separate bugs and fall under the Standard package.
My game crashes on a specific device but not others. Can you fix that?
Yes — device-specific crashes are often caused by resolution/memory issues, missing permissions, or specific Android API levels. Share the device specs and crash logs and I'll trace it.
Will you fix bugs caused by a third-party asset I bought?
Yes, if the conflict is in your code or configuration. Asset-level bugs that require modifying paid asset source code are case-by-case — message me with the details first.
