Simulation Modeling Engineer (W2 Only / No C2C)

Description

We’re looking for a Simulation Modeling Engineer to join our team building physics-based simulation environments for Robotics. You’ll create, import, and maintain high-fidelity 3D models of robotic workcells, converting CAD designs into simulation-ready assets that enable robot motion planning, controls development, and system validation before physical hardware exists.

• Import a new robot prototype station from SolidWorks CAD into the simulator with accurate arm kinematics, rail geometry, sensor placement, and tote collision models

• Tune simulation assets to balance detail vs execution speed of simulation

• Convert OBJ collision meshes to VTK tetrahedral format to improve physics contact accuracy for robotic manipulation

• Build a model validation script that checks inertia values, texture transparency, and mesh integrity at build time

Task Breakdown:

3D Asset Pipeline: Convert SolidWorks/CAD assemblies into simulation-ready formats (SDF, URDF, glTF, VTK) with accurate kinematics, collision geometry, inertia properties, and visual materials (PBR)

• Station Configuration: Build and maintain robotic workcell configurations including robot arms, rails, sensors, end-effectors, pods, conveyors, and environmental structures

• Collision Modeling: Create and optimize collision meshes using tetrahedral meshing workflows (RoLoPoly, TetGen, Drake mesh refiner) for accurate physics contact simulation

• Sensor Setup: Configure simulated cameras, depth sensors, and other perception hardware with accurate field-of-view parameters

• Validation: Build model integrity tests, verify FK/IK accuracy against real hardware, and maintain asset quality standards (mass, inertia, texture transparency, mesh integrity)

• Customer Delivery: Independently manage asset import/update requests from robotics program teams, meeting SLA timelines for new station deliveries

Additional Skills & Qualifications

1. Experience with USD (Universal Scene Description) model format

2. Familiarity with PBR materials, glTF format, and real-time rendering pipelines

3. C++ experience (our simulator core is 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 (intrinsics, distortion models, synthetic data generation)

Years of Experience:

• 5+ years professional SW development experience.

• 1+ year working with 3D modeling tools (Blender, SolidWorks, Maya, or equivalent)

• Experience with robotics simulation formats: URDF, SDF, MJCF, or similar

• Familiarity with mesh processing: decimation, convex decomposition, tetrahedral meshing, 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 cumulative experience with at least one of: 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 with minimal oversight

Job Type & Location

This is a Contract position based out of Boston, MA.

The pay range for this position is $90.00 - $100.00/hr.

Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following:
• Medical, dental & vision
• Critical Illness, Accident, and Hospital
• 401(k) Retirement Plan – Pre-tax and Roth post-tax contributions available
• Life Insurance (Voluntary Life & AD&D for the employee and dependents)
• Short and long-term disability
• Health Spending Account (HSA)
• Transportation benefits
• Employee Assistance Program
• Time Off/Leave (PTO, Vacation or Sick Leave)

This is a fully onsite position in Boston,MA.

This position is anticipated to close on Jul 23, 2026.

About TEKsystems

We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company.

The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

About TEKsystems and TEKsystems Global Services

We’re a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. We’re a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. We’re strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. We’re building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.

Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.