Back to Careers
QA Engineer — Engine Reliability & Bug Fixing
Paris & San Francisco (Remote / Hybrid)
Contract: 2-Month Freelance Mission (Path to Full-time Founding Engineer)
The Mission
We are looking for an elite QA Engineer to join us for a high-intensity, 2-month sprint. Your mission: make our game generation engine bulletproof.
You will be responsible for testing, breaking, debugging, and stabilizing a highly complex system that turns prompts into fully playable 3D games. This is not traditional QA — you will operate at the core of the product, working directly with AI engineers and 3D systems.
Your role is simple: find every bug, understand it deeply, and fix it fast.
If this mission is a success, the goal is to convert this into a full-time Founding Engineer role.
What you'll do
- •Break the system relentlessly: Design and execute aggressive testing strategies to uncover edge cases, inconsistencies, and failures across the entire pipeline (LLMs → DSL → 3D engine).
- •Own bug fixing end-to-end: Identify, reproduce, debug, and fix issues directly in the codebase — not just report them.
- •Build testing infrastructure: Create automated test suites, validation pipelines, and regression systems to ensure stability as we iterate fast.
- •Test AI-driven systems: Validate outputs from LLMs (Claude, Gemini), ensuring consistency, determinism, and correctness when translated into game logic and 3D environments.
- •Stress test agentic workflows: Push multi-agent systems to their limits, identify failure modes, and harden the system against unpredictable behaviors.
- •Collaborate tightly with engineers: Work side-by-side with AI and 3D engineers to quickly diagnose issues and ship fixes in real time.
- •Improve product quality at speed: Ensure we can ship fast without breaking everything.
You might be a fit if...
- •You have a strong track record in QA or engineering roles where you owned product reliability and stability.
- •You are not just a tester — you can read, understand, and fix code (JavaScript / TypeScript / Python).
- •You are obsessed with edge cases, weird bugs, and breaking systems.
- •You have experience testing complex systems (APIs, AI systems, game engines, or distributed systems).
- •You are comfortable working with AI outputs and understand their non-deterministic nature.
- •You know how to build automated tests (unit, integration, end-to-end).
- •You move fast, think clearly under pressure, and prioritize impact over perfection.
- •Your personal workflow is highly technical and AI-augmented.
- •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 building a system that could change how games are created worldwide.
- •Extreme Ownership: You don't just test — you ensure the system works.
- •Talent & Culture: Work with A-players in an AI-native team that ships fast, breaks things, fixes them, and keeps going.