Game Developer in United Kingdom

About the Role

We are looking for experienced game developers to help train and evaluate AI models on game development. You will create realistic game-development tasks, review game code and project structure, and assess AI-generated game logic.

Key Responsibilities

Create practical tasks covering game logic, animation, UI, physics and performance.
Review game code bases and project structure, and explain architecture and design decisions.
Evaluate AI-generated gameplay code, scripts and scenes for correctness and quality.
Write reference solutions and short design explanations for training use.
Give structured written feedback on model outputs.
Follow project guidelines, take part in calibration and review sessions, and incorporate feedback to keep quality consistent.

Who We're Looking For

Required Qualifications

2+ years of hands-on game development experience.
Proficiency in at least one engine (Unity, Unreal, Godot or similar) and its main language (C#, C++ or equivalent).
A portfolio of shipped titles or prototypes.
Understanding of core game design and player-experience principles.
Fluent written English.
Reliable, detail-oriented, and able to work independently and meet deadlines in a remote setting.

Preferred Qualifications

Experience with large or multi-platform code bases.
XR development experience.
AI or data-generation project experience.

Rights, Confidentiality and Data Handling

Submit only work that you created yourself or that you have the right to share.
Do not submit material covered by an employer, client or third-party confidentiality agreement, or material you have no right to share.
Do not submit export-controlled, military or defence-related technical data.
Remove credentials, secrets and personal data from anything you submit.
Rex may ask for evidence of ownership or licence, may verify submissions, and may reject or remove any submission.

Legal and Compliance Notice

All content you submit must be lawful, and you must have the right to share it.
Do not submit confidential or proprietary material belonging to an employer, client or third party, or personal data without a lawful basis.
Rex may verify identity, credentials, ownership and licensing; may reject or remove any submission; and may report unlawful submissions to the relevant authorities.
Engagement and payment are subject to successful verification and to applicable sanctions, export-control, tax and employment laws.
The contractor agreement will set out ownership and licence terms for the work you deliver (to be confirmed by Rex Legal).

Compensation

USD $50–125 per hour, adjusted by country of residence.