Mechanical Engineer 3

Job#: 3056685
Job Description:
Senior Mechanical Simulation Engineer
Location: Onsite in Fremont, CA
Schedule: Monday-Friday, 8:00 AM - 5:00 PM PST
Interview Process:

• Round 1: 1-hour virtual technical screen
• Round 2: 3-hour onsite panel interview

Position Overview
We are seeking a Senior Mechanical Simulation Engineer to support the analysis, validation, and optimization of complex equipment, subsystems, and components through advanced computational modeling and simulation.
This role will focus on reacting-flow CFD, species transport, chemical reaction modeling, heat transfer, fluid dynamics, structural analysis, and multiphysics simulations. The successful candidate will develop validated physics-based models that drive product development, improve performance, and support engineering decisions across a variety of highly technical applications.
The ideal candidate combines deep expertise in computational engineering with strong fundamentals in fluid mechanics, heat transfer, reaction kinetics, and numerical modeling.
Key Responsibilities

• Develop and execute advanced CFD, FEA, and multiphysics simulations to support product development and design optimization.
• Perform thermal, fluid flow, structural, chemical reaction, and species transport analyses.
• Build and maintain physics-based models involving reaction kinetics, gas-phase chemistry, surface reactions, and mass transport.
• Conduct reacting-flow simulations involving coupled fluid flow, heat transfer, mass transfer, chemical reactions, and material interactions.
• Develop, calibrate, simplify, and validate computational models using experimental data and engineering test results.
• Evaluate design concepts and support engineering decision-making through simulation-driven insights.
• Analyze process sensitivity, performance limitations, and optimization opportunities.
• Support development of process chambers, fluid delivery systems, thermal management solutions, advanced materials applications, and related technologies.
• Design validation methodologies, feasibility studies, test plans, and correlation activities.
• Partner with cross-functional engineering teams to improve product performance and reliability.
• Present technical findings, simulation results, recommendations, and design tradeoffs to engineering leadership and project teams.
• Generate technical reports documenting assumptions, model development, validation results, and recommendations.

Required Qualifications

• Master's degree or Ph.D. in:
  • Mechanical Engineering
  • Aerospace Engineering
  • Computational Engineering
  • Applied Mathematics
  • Chemical Engineering
  • Physics
  • Data Science
  • Or a related technical discipline
• Strong experience performing CFD and multiphysics simulation work.
• Deep understanding of:
  • Fluid mechanics
  • Heat transfer
  • Thermodynamics
  • Mass transfer
  • Numerical methods
  • Reaction kinetics
• Experience developing and validating computational models for engineering applications.
• Strong technical communication and presentation skills.

Required Technical Skills
CFD & Multiphysics

• ANSYS Fluent
• ANSYS Mechanical
• STAR-CCM+
• COMSOL Multiphysics
• Equivalent CFD/FEA platforms

Simulation Areas

• Reacting Flow CFD
• Species Transport
• Heat Transfer
• Fluid Flow Analysis
• Chemical Reaction Modeling
• Reaction Kinetics
• Structural Analysis
• Thermal Management
• Multiphysics Coupling

Engineering Fundamentals

• Fluid Mechanics
• Thermodynamics
• Mass Transfer
• Heat Transfer
• Numerical Analysis
• Model Validation
• Data Correlation

Preferred Qualifications

• Experience developing reaction kinetics models.
• Experience with gas-phase chemistry and surface reaction modeling.
• Experience with advanced materials including:
  • Metals
  • Ceramics
  • Quartz
  • Plastics
  • Advanced coatings
• Experience with CAD platforms:
  • Siemens NX
  • Creo / ProE
  • SolidWorks
• Experience supporting development of complex industrial equipment, advanced manufacturing systems, process equipment, energy systems, aerospace systems, or related technologies.

Top Skills (Must-Haves)
1. Reacting-Flow Simulation & Species Transport
Candidates should have direct experience modeling reacting flows, mass transport, reaction kinetics, and coupled physics problems.
2. CFD / FEA & Multiphysics Analysis
Strong hands-on experience performing advanced simulations involving fluid flow, thermal performance, structural behavior, and multiphysics interactions.
3. ANSYS Fluent / STAR-CCM+ / COMSOL
Recent professional experience utilizing industry-standard simulation platforms.
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