AI / Simulation Principal Engineer

• Serve as the principal technical authority for advanced simulation projects involving CFD fire/explosion refrigerant leakage battery thermal runaway combustion multiphase flows turbulence modeling and electronic cooling.
• Lead and enforce simulation Verification & Validation (V&V) methodologies ensuring alignment with ASME V&V 10 / V&V 20 standards NASA CFD and modeling credibility guidelines Oberkampf & Roy (Verification and Validation in Scientific Computing) principles etc.
• Define and implement best practices for:
  • Code verification and solution verification
  • Model validation against experimental data
  • Uncertainty quantification (UQ)
  • Sensitivity analysis
  • Grid convergence and mesh independence studies
  • Error estimation and documentation of model limitations
• Establish model credibility frameworks for simulation-based decision-making especially for safety-critical applications.
• Lead simulation-based investigations in:
  • Refrigerant leakage and dispersion (flammability and ignition risk)
  • Battery thermal runaway propagation and vent gas hazards
  • Fire smoke and explosion dynamics
  • Combustion and reacting flows
  • Multiphase and phase-change systems
  • Electronics cooling and thermal reliability
• Ensure test-to-simulation correlation and apply structured V&V approaches to build confidence in simulation predictions.
• Develop and review technical reports and documentation with clear articulation of:
  • Modeling assumptions
  • Validation evidence
  • Uncertainty bounds
  • Applicability and limitations of the model
• Act as the technical approver/reviewer for high-impact simulation studies ensuring V&V rigor before results are used for certification or decision-making.
• Guide teams in selecting appropriate modeling approaches (analytical CFD reduced order and digital twins) based on required fidelity and validation maturity.
• Work closely with testing certification and regulatory teams to ensure simulation outputs are aligned with engineering standards and safety requirements.
• Mentor engineers on V&V best practices simulation credibility and physics-based modeling techniques.
• Contribute to the development of internal V&V guidelines checklists and simulation governance frameworks.
• Represent the organization in external technical forums standard committees and discussions related to simulation credibility and digital engineering.

• Ph.D. / Master's in Mechanical Aerospace Chemical Fire Engineering Thermal Sciences or related field (Ph.D. preferred) with 10-12+ years of experience in CFD simulation safety engineering or applied R&D
• The candidate is not only a subject-matter expert in simulation physics but also a recognized authority in simulation credibility and V&V.
• The candidate should be capable of ensuring that simulation outputs are technically defensible repeatable validated and suitable for high-stakes engineering and certification decisions.
• The candidate must demonstrate the ability to bridge advanced physics modeling with structured validation frameworks enabling confident decision-making in safety-critical applications.
• Proficiency in CFD tools: ANSYS Fluent STAR-CCM+ OpenFOAM CONVERGE FDS
• Strong fundamentals in: Turbulence (RANS LES) Heat transfer Combustion & fire modeling and Multiphase flows
• Hands-on experience in: Refrigerant leakage & gas dispersion Fire / explosion modeling Thermal & safety simulations
• Experience in test correlation validation and technical reporting
• Ability to lead complex engineering problems and work with cross-functional teams
• Strong communication and documentation skills
• Experience in safety certification or regulated environments• Exposure to UQ risk-based modeling or HPC• Basic scripting (Python/MATLAB)
• Core Skills: CFD | Combustion | Multiphase Flow | Refrigerant Leakage | Fire & Explosion | V&V | Thermal Analysis | Risk Assessment

How does UL Solutions ensure its pay and bonus plans are competitive?

What We Do

A global leader in applied safety science UL Solutions transforms safety security and sustainability challenges into opportunities for customers in more than 100 countries. UL Solutions delivers testing inspection and certification services together with software products and advisory offerings that support our customers’ product innovation and business growth. The UL Certification Marks serve as a recognized symbol of trust in our customers’ products and reflect an unwavering commitment to advancing our safety mission. We help our customers innovate launch new products and services navigate global markets and complex supply chains and grow sustainably and responsibly into the future. Our science is your advantage.

Why Work With Us

Science is in our DNA; we are endlessly curious and passionate about seeking and speaking the truth. We take delight in knowing that our work makes a meaningful contribution to society and we are proud that our culture is centered on integrity collaboration inclusion and excellence.

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