Software Dev Engineer - Software Dev Engineer IV

A position is available for a Simulation Modeling Engineer to build physics-based simulation environments. The successful candidate will create, import, and maintain 3D models of robotic workcells. This involves converting CAD designs into simulation-ready assets that facilitate robot motion planning, controls development, and system validation before the existence of physical hardware. The role involves working with mechanical engineers, controls teams, and simulation developers to translate hardware designs into digital twins and independently managing asset delivery., * Convert SolidWorks/CAD assemblies into simulation-ready formats (SDF, URDF, glTF, VTK) with accurate kinematics, collision geometry, inertia properties, and visual materials.

• Build and maintain robotic workcell configurations, including robot arms, rails, sensors, end-effectors, pods, conveyors, and environmental structures.
• Create and optimize collision meshes using tetrahedral meshing workflows for accurate physics contact simulation.
• Configure simulated cameras, depth sensors, and other perception hardware with accurate field-of-view parameters.
• Build model integrity tests, verify FK/IK accuracy against real hardware, and maintain asset quality standards.
• Independently manage asset import and update requests from robotics program teams.
• Import new robot prototype stations from SolidWorks CAD into the simulator.
• Tune simulation assets to balance detail versus execution speed of simulation.
• Convert OBJ collision meshes to VTK tetrahedral format to improve physics contact accuracy.
• Build a model validation script that checks inertia values, texture transparency, and mesh integrity at build time.

• 5+ years of professional software development experience.
• 1+ year working with 3D modeling tools such as Blender, SolidWorks, or Maya.
• Experience with robotics simulation formats like URDF, SDF, or MJCF.
• Familiarity with mesh processing, including decimation, convex decomposition, tetrahedral meshing, and collision geometry generation.
• Understanding of rigid body kinematics (joint types, coordinate frames, forward/inverse kinematics).
• Proficiency in Python for scripting asset pipelines and automation.
• 1+ year of cumulative experience with game engines (Unreal, Unity), physics engines (Drake, MuJoCo, Bullet, PhysX), or robotics simulation platforms (Gazebo, Isaac Sim).
• Demonstrated ability to independently own and deliver technical work.

Preferred Qualifications

• Experience with USD (Universal Scene Description) model format.
• Familiarity with PBR materials, glTF format, and real-time rendering pipelines.
• Experience with C++.
• Web 3D visualization (Three.js, WebGL).
• Understanding of simulation contact models and deformable body simulation.
• Experience converting CAD (SolidWorks, STEP, IGES) to simulation-ready assets.
• Familiarity with camera simulation, including intrinsics, distortion models, and synthetic data generation.

Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico.

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