CFD Simulation Engineer

Applicantz, Inc; Fremont (CA); On-site; USD 110,000 - 160,000; Full time

Job summary

Applicantz, Inc. is seeking a highly skilled CFD/Multiphysics engineer for a 24-month onsite role in Fremont, CA. You will conduct reacting-flow CFD, multiphysics simulations, and model development to validate and optimize semiconductor equipment and subsystems.

The role requires MS/PhD in Mechanical Engineering or related field, strong background in reaction kinetics, heat and mass transfer, and experience with ANSYS Fluent, STAR-CCM+, or COMSOL. Onsite work, regular M-F schedule.

Qualifications

• MS/PhD in Mechanical Engineering or related field.

Responsibilities

• Support thermal, flow, structural, and chemical reaction simulations for design validation and optimization of semiconductor equipment and subsystems.

Skills

CFD/Multiphysics

Reaction kinetics

Heat transfer

Transport phenomena

Education

MS/PhD in Mechanical Engineering

Tools

ANSYS Fluent

STAR-CCM+

COMSOL

Siemens NX

ProE/Creo

Job description

Hiring for a 24-month 100% onsite job in Fremont (94538). Regular shift M-F, 8:00 AM to 5:00 PM.

Top Skills:

• Reacting-flow simulation, species transport
• CFD/FEA and Multiphysics simulation
• Ansys Fluent/Mechanical, CCM+

Job Responsibilities:

• Support thermal, flow, structural, and chemical reaction simulations for design validation and optimization of semiconductor equipment, sub-systems, and components.
• Conduct detailed CFD/FEA and multiphysics analyses including heat transfer, fluid and gas flow dynamics, species transport, chemical reaction, stress, vibration, and manufacturability assessments.
• Develop physics-based chemical reaction, reaction kinetics, gas-phase chemistry, surface reaction, and species transport models.
• Perform reacting-flow CFD and multiphysics simulations involving coupled fluid flow, heat transfer, mass transfer, chemical kinetics, and material response.
• Develop, simplify, calibrate, and validate reaction mechanisms using experimental data, first-principles understanding, and process knowledge.
• Support simulation-driven development of process chambers, gas delivery systems, plasma-facing hardware, thermal management solutions, and advanced materials applications.
• Develop feasibility studies, test plans, and best-known methods to characterize and validate reaction-driven system performance.
• Prepare high-quality reports and technical presentations that clearly communicate model assumptions, validation results, process sensitivities, and design recommendations.

Skills:

• Highly proficient in CFD and multiphysics simulation tools such as ANSYS Fluent, STAR-CCM+, COMSOL, or equivalent tools.
• Solid background in fluid mechanics, heat transfer, mass transfer, thermodynamics, reaction kinetics, and numerical methods
• Experience developing, implementing, and validating chemical reaction, reacting-flow, or species transport models.
• Experience with a variety of materials such as metals, ceramics, quartz, plastics, and/or advanced coatings.
• Experience with 3D design tools such as Siemens NX, ProE/Creo, SolidWorks, or equivalent CAD platforms.
• Excellent written and verbal communication skills, including strong technical presentation capability.

Education:

• M.S. or Ph.D. in Mechanical Engineering, Aerospace Engineering, Computational Engineering, Applied Mathematics, Data Science, or a related field. Role Focus: Chemical reaction modeling, reaction kinetics, reacting-flow CFD, species transport, and multiphysics coupling