Job Summary: We are seeking a Lead Real-Time Developer to lead the technical architecture of an interactive 3D simulation connected to real hardware, ensuring performance and stability. Key Highlights: 1. Lead the technical architecture of interactive 3D simulation connected to real hardware. 2. Define the technical structure and ensure performance in live environments. 3. Solid experience with Unity or Unreal Engine and complex interactive projects. North is a digital product studio based in Barcelona. We collaborate with ambitious companies to innovate new services and build digital products. **Our values are:** show your passion, act as an owner and think rigorously, find a way to solve it, and keep the bar high We are looking for a Lead Real\-Time Developer to lead the technical architecture of an interactive 3D simulation connected to real hardware. You will be responsible for defining the project’s technical structure, integrating physical vehicle signals, and ensuring performance and stability in a real\-time environment—especially during live events. Responsibilities * Define the project’s technical architecture in Unity or Unreal Engine. * Integrate CAN signals and physical inputs (steering wheel, console, controllers). * Implement interactive logic and various journey states. * Oversee system performance, optimization, and stability. * Collaborate closely with the UX Lead and Technical Artist. * Ensure technical robustness in live event environments (high stability requirements). Requirements * Solid experience with Unity or Unreal Engine. * Demonstrable experience in complex real\-time interactive projects. * Experience in hardware–software integration. * Advanced knowledge of optimization in real\-time environments. * Problem\-solving profile with technical leadership capability and architectural decision\-making skills. Collaboration Model We seek a freelancer who can collaborate with us full\-time from mid\-March until early April. You will serve as the primary technical reference for real\-time development, working closely with North’s multidisciplinary team.