Back to Careers
AI Engineer — Agentic Systems & 3D
San Francisco & Paris (Remote / Hybrid)
Contract: 2-Month Freelance Mission (Path to Full-time Founding Engineer)
The Mission
We are looking for an exceptional AI Engineer to join us for a high-impact, 2-month sprint. Your mission: build the robust, scalable brains behind our automated game creation workflow.
You will architect and deploy advanced AI pipelines and multi-agent systems capable of turning a few prompts into fully playable 3D games. As a small, highly agile team, we don't do silos. You will own the AI infrastructure (GCP/Vertex), but you will also need to get your hands dirty with game logic and 3D rendering engines.
If this 2-month mission is a success, the goal is to convert this into a full-time Founding Engineer role.
What you'll do
- •Architect and scale agentic loops: Design and implement robust multi-agent systems that generate entire games autonomously, from logic scripting to scene design.
- •Design bridging architectures: Create and manage custom Domain-Specific Languages (DSLs) to reliably translate unstructured LLM reasoning into deterministic, playable 3D environments.
- •Advanced Model Ops: Go beyond basic prompting. Handle complex context management, multi-turn memory systems, and fine-tuning of models (via Vertex AI) to improve accuracy, reduce latency, and control costs for game generation tasks.
- •Master Foundation Models: Deeply integrate and orchestrate state-of-the-art models, primarily Claude (Anthropic) and Gemini (Google), optimizing tool use and planning abilities.
- •Own the AI Cloud Infrastructure: Deploy, manage, and scale our AI applications using Google Cloud Platform (GCP), ensuring low latency and high reliability in production.
- •Bridge AI and 3D: Work directly within interactive web environments, feeding AI outputs into real-time rendering engines.
You might be a fit if...
- •You have a proven track record of engineering production-ready applications powered by LLMs and agentic frameworks.
- •You possess strong, hands-on expertise in the GCP ecosystem (especially Vertex AI for fine-tuning and model deployment).
- •You are hands-on with Web 3D: You either have solid experience with Three.js (WebGL/WebXR), OR you are a fearless learner totally willing to dive deep into 3D scene graphs, spatial reasoning, and game logic.
- •You've shipped systems using frontier models (Claude, Gemini) and mastered advanced context window optimization, strict JSON enforcement, and function calling.
- •Your personal workflow is heavily AI-augmented.
- •You care deeply about speed of iteration — you are a hacker and a builder who thrives in a small team where everyone ships.
- •Language: You are perfectly fluent in English (written and spoken).
What we offer
- •The Mission Setup: A highly competitive freelance rate for the initial 2-month contract.
- •The Path to Founding Engineer: If we're a great match, you'll transition to a full-time role with Founding team equity — build and own a piece of what you create.
- •Impact: A defining role in reshaping how games are built and played by billions.
- •Extreme Autonomy: You'll lead the architecture, not follow instructions.
- •Talent & Culture: Work with A-players in an AI-native team that moves fast, celebrates hard, and obsesses over the mission.