Universal Scene Description Developer

Role Overview

We are seeking a USD developer to bridge our Unreal Engine environments with NVIDIA Isaac Sim. In this role, you will be responsible for taking imported assets and reconstructing them into high-fidelity, physics-ready OpenUSD stages. The ideal candidate will have a deep understanding of how to match Unreal Engines photorealistic lighting and rendering quality within Omniverse, while implementing robust collision and rigid-body dynamics for simulation.

Key Responsibilities

• Environment Reconstruction: Translate imported Unreal Engine environments into Isaac Sim, managing coordinate system conversions, scale translations, and complex transform hierarchies.
• Photorealistic Lighting & Rendering: Configure OpenUSD lighting systems (Distant Lights, Dome Lights, Sky Spheres) and physically based rendering (PBR) materials to match the visual quality of the original Unreal Engine scenes.
• Physics & Collision Implementation: Utilize the Omniverse PhysX API to set up accurate rigid body dynamics, finetune collision meshes , and apply proper physics materials to imported geometry.
• Unreal to Isaacsim Automation: Write clean, modular Python scripts using the pxr (Usd, UsdGeom, UsdLux, UsdPhysics) and Omniverse APIs (such as omni.physx) to automate stage generation, prim manipulation, collision mesh generation, and environment setup.

Required Tech Stack & Core Skills

• Simulation: NVIDIA Isaac Sim, NVIDIA Omniverse.
• Scene: OpenUSD (Universal Scene Description), manipulating prims, transform hierarchies, and coordinate spaces.
• Languages & APIs: Python, OpenUSD Python modules like pxr.Usd, UsdGeom, UsdLux, UsdPhysics), and Omniverse Kit APIs (omni.physx.
• Physics Engine: NVIDIA PhysX including rigid body dynamics, convex hulls, triangle mesh collisions, physics materials.
• Rendering & Lighting: RTX Real-Time / Path-Traced rendering, Physically Based Rendering (PBR) materials, and programmatic lighting control.
• Engine Familiarity: Unreal Engine, specifically understanding how assets, materials, and scales export into USD environments.