Game Developer

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.

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).

Where you can work

This role is 100% remote: you can work from anywhere in the world.