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Simulation Realism Engineer

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OpenAI

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Location:
United States , San Francisco

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Contract Type:
Not provided

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Salary:

293000.00 - 385000.00 USD / Year

Job Description:

We are hiring a Simulation Realism Engineer to drive our effort to make simulation quantitatively real for robotics research and product development. This role owns the strategy, tooling and operational practice that close sim→real gaps across physics, sensors and rendering. You will work cross-functionally with research, software, hardware and ops to discover the highest-impact realism gaps, define measurable realism metrics, and deliver engineering solutions — from tuning engine parameters and asset standards to integrating third-party engines and operating sims at scale. This is a hands-on engineering role that blends scientific rigor (measurement & validation) with pragmatic systems work (tooling, cloud ops, and CI/HIL pipelines).

Job Responsibility:

  • Define and operationalize realism metrics & protocols
  • Design experiments and automated tests to find specific areas of non-realism, quantify gaps, and track regressions over time
  • Fine-tune engine parameters (contacts, friction, mass/density, solver settings) and object models so simulated dynamics match measured reality
  • Evaluate, integrate, and — where necessary — extend 3rd-party physics, rendering, and sensor simulation engines
  • Lead vendor POCs and benchmark features to influence roadmaps
  • Create standards, guidelines, and interactive tools for authoring and validating asset physical/visual properties
  • Implement semi- or fully-automated pipelines to tune and optimize assets for target engines
  • Solve technical issues for running engines in the cloud (OS, drivers, GPU), parallelize simulations, and harden real-world-facing pipelines so sims can run reliably at scale
  • Own validation campaigns (teleop, HIL regression suites, metric computation) and partner with research to close the loop between simulation improvements and downstream model performance
  • Document and scale best practices
  • Produce ergonomic templates, docs, and standards so dozens of engineers and researchers can author realistic tasks and assets quickly

Requirements:

  • Strong mathematical & physics background — rigid/soft-body dynamics, contact mechanics, or FEA
  • Comfortable reasoning about solvers and numerical stability
  • Hands-on experience with at least one or two production physics engines and sensor/render stacks (MuJoCo, PhysX, Isaac Sim, Newton, GPU renderers, or equivalent)
  • Know how to measure/interpret their failure modes
  • Enjoy plumbing every layer of the sim stack: CAD/asset import, collision/visual mesh tradeoffs, contact tuning, real-time loading, and rendering pipelines
  • Have led projects that bridge sim and robotics, such as teleoperation data collection, hardware-in-the-loop regression tests, or digital twin efforts
  • Experienced building robust tools and processes — CI for sims, asset validation pipelines, or distributed GPU workloads
  • Care about documentation and ergonomics that let others be productive
  • Can collaborate broadly: work directly with researchers to design experiments, with SWE/RE to ship tooling, and with vendors to run benchmarks and influence product roadmaps
What we offer:
  • Medical, dental, and vision insurance for you and your family, with employer contributions to Health Savings Accounts
  • Pre-tax accounts for Health FSA, Dependent Care FSA, and commuter expenses (parking and transit)
  • 401(k) retirement plan with employer match
  • Paid parental leave (up to 24 weeks for birth parents and 20 weeks for non-birthing parents), plus paid medical and caregiver leave (up to 8 weeks)
  • Paid time off: flexible PTO for exempt employees and up to 15 days annually for non-exempt employees
  • 13+ paid company holidays, and multiple paid coordinated company office closures throughout the year for focus and recharge, plus paid sick or safe time
  • Mental health and wellness support
  • Employer-paid basic life and disability coverage
  • Annual learning and development stipend to fuel your professional growth
  • Daily meals in our offices, and meal delivery credits as eligible
  • Relocation support for eligible employees
  • Additional taxable fringe benefits, such as charitable donation matching and wellness stipends
  • Offers Equity
  • Performance-related bonus(es) for eligible employees

Additional Information:

Job Posted:
February 21, 2026

Employment Type:
Fulltime
Work Type:
On-site work
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