Job#: 3037731

Job Description:

Location: Boston, Massachusetts (Onsite)

COMPENSATION: $90 - $100 HOURLY

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.

• 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.

Everforth Apex uses a virtual recruiter as part of the application process. Click here for more details. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Everforth Apex and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at https://www.apexsystems.com/privacy-policy

Everforth Apex Benefits Overview: Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Everforth Apex team member can provide.

Everforth Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.

If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at [email protected] or 804-523-8228. Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered.

UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex Systems.