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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Dev Engineer - Software Dev Engineer IV - **Company:** Everforth Apex - **Location:** Boston, MA, United States - **Salary:** $187,200.0 - $208,000.0 - **Contract:** Permanent contract - **Skills:** 3d Models, Computer-Aided Design, 3D Visualization, Bullet (Software), C++ (Programming Language), SolidWorks (CAD), Game Engine, Python (Programming Language), Kinematics, Maya, Motion Planning, Software Engineering, System Testing, WebGL, Three.js, Model Validation, Modeling and Simulation, Data Generation - **Published:** June 10, 2026 - **Apply:** https://www.dice.com/job-detail/59bde16c-0c63-43fe-910a-4959f4353a12 ## About the Role * 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. ## Description 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. ## Related Videos - [TresJS a new declarative ThreeJS as Vue components](https://www.wearedevelopers.com/videos/543-tresjs-a-new-declarative-threejs-as-vue-components) - [Virtual Reality – The path to create your world](https://www.wearedevelopers.com/videos/248-virtual-reality-the-path-to-create-your-world) - [How Robots Learn to be Robots](https://www.wearedevelopers.com/videos/1632-how-robots-learn-to-be-robots) - [Rendering Design Software in the Browser at Penpot](https://www.wearedevelopers.com/videos/1353-rendering-design-software-in-the-browser-at-penpot) - [WebXR: Enabling Virtual and Augmented Reality on the Web](https://www.wearedevelopers.com/videos/965-webxr-enabling-virtual-and-augmented-reality-on-the-web) - [Live Coding an Augmented Reality Game with WebXR](https://www.wearedevelopers.com/videos/199-live-coding-an-augmented-reality-game-with-webxr) ## Related Articles - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [How Much Does a Software Engineer Make? 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