Modeling and Simulation Scientist

Sitka Inc.; Flagstaff (AZ); Hybrid; USD 110,000 - 160,000; Full time

Job summary

Sitka Inc. is seeking a Modeling & Simulation Scientist to apply CFD to medical device design, development, and regulatory submissions. The role focuses on cardiovascular hemodynamics, virtual testing, and innovative modeling to accelerate product progress.

You will work with cross-functional teams at our Flagstaff or Phoenix facilities, with a potential hybrid work arrangement. The candidate should have a strong CFD background, programming skills, and experience with CAD tools, ready to drive

Qualifications

• Master of Science in mechanical or biomedical engineering with at least 5 years of CFD experience.
• Experience in CFD software such as Fluent, Star CCM+, COMSOL or equivalent.
• Experience in cardiovascular hemodynamics.
• Programming or scripting in Python or MATLAB for automation.
• Experience creating user-defined functions and AI/ML experience.
• Strong SolidWorks experience and solid modeling skills.
• Ability to manage multiple simulations and collaborate across teams.
• Excellent written and verbal communication and documentation skills.
• Willingness to travel up to 5%.

Responsibilities

• Provide analytical support for medical product design, optimization, and development.
• Perform CFD/FSI modeling of transient flow, species transport, porous jumps, multiphase flow, mass transport and heat transfer.
• Advance data-driven modeling with AI/ML and PINNs; couple with physics-based methods.
• Verify and validate computational analyses and improve modeling workflows.
• Document results and present findings in technical reports.

Skills

CFD analysis

Cardiovascular hemodynamics

Python

MATLAB

AI/ML

Solid modeling

Cross-functional collaboration

Technical communication

Education

Master's in mechanical or biomedical engineering

Doctoral degree in mechanical or biomedical engineering (desired)

Tools

Fluent

Star CCM+

COMSOL

SolidWorks

Job description

Category: Engineering, Scientists & Technicians

Sub-Category: Science

Work Arrangement: Hybrid

Posting Start Date: 8/26/26

Posting End Date: 9/26/26

About the Role

We are looking for a Modeling & Simulation Scientist to join our team. In this role you will use Computational Fluid Dynamics (CFD) expertise to provide support for design, development, and optimization of medical devices. This role offers a unique opportunity to model cardiovascular hemodynamics, supporting product innovation, design iteration, and regulatory submissions. Working closely with cross-functional teams, you will use simulation-driven insights to predict device performance, identify worst-case scenarios, and accelerate product development through virtual testing. The successful candidate will perform CFD analyses by applying principles of fluid mechanics, material behavior, and medical device durability to solve complex engineering challenges and advance patient care.

This position will be located at our facility in either Flagstaff or Phoenix, Arizona , with the possibility of a hybrid work arrangement.

Responsibilities

• Provide analytical support in the areas of medical product design, optimization and new product development.
• Perform CFD/FSI modeling of transient flow, species transport, porous jumps, multiphase flow, mass transport and heat transfer analysis to support accelerated product design and evaluation.
• Perform other analytical procedures that will assist in the application, design and manufacture of medical products.
• Advance the use of data driven modeling using AI/ML and PINNs techniques.
• Develop techniques to combine data driven modeling with physics-based modeling.
• Verify and validate computational analyses.
• Support continuous improvement of modeling workflows, tools, and best practices.
• Review and provide feedback on modeling approaches and analyses performed by peers.
• Document and communicate results through technical reports and presentations.

Required Qualifications

• Master of Science degree in mechanical or biomedical engineering with a minimum of 5 years’ experience in computational fluid dynamics analysis
• Experience in computational fluid dynamics software, specifically analysis in Fluent, Star CCM+, COMSOL or similar with related pre- and post-processing software
• Experience in cardiovascular hemodynamics
• Programming or scripting experience (Python, MATLAB, or similar) for automation and data processing
• Experience creating user-defined functions for modeling; experience with AI/ML
• Advanced experience in solid modeling, specifically SolidWorks
• Proven ability to embrace new concepts and learn quickly
• Ability to independently manage multiple simulation projects, solve complex modeling challenges, and collaborate effectively across multidisciplinary teams
• Excellent communication and technical documentation skills
• Ability to travel up to 5%

Desired Qualifications

• Doctoral degree in mechanical or biomedical engineering
• Experience with verification and validation of computational models, and with techniques such as Particle Image Velocimetry (PIV)
• Experience with thrombosis modeling

This position offers a hybrid work arrangement in the country from which the Associate is employed. Eligibility is dependent on the responsibilities of the role and business needs, and the Associate must agree to comply with Gore’s work arrangement policies.

What We Offer

Our success is based on the capability and creativity of our Associates, and we are proud to offer a comprehensive and competitive total rewards program that supports your everyday and helps you build your tomorrow.

We provide benefits that offer choice and flexibility and promote overall well-being. And in keeping with our belief that every Associate should share in the collective success of the enterprise; we provide a distinctive Associate Stock Ownership Plan in each country as well as potential opportunities for profit‑sharing.

Learn more at gore.com/careers/benefits

Gore is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender, national origin, ancestry, age, status as a qualified individual with a disability, genetic information, pregnancy status, medical condition, marital status, sexual orientation, status as a protected veteran, gender identity and expression, and any other characteristic protected by applicable laws and regulations.

Gore is committed to a drug-free workplace. All employment is contingent upon successful completion of drug and background screening. Gore will consider qualified applicants with criminal histories, e.g., arrest and conviction records, in a manner consistent with the requirements of applicable laws.

Gore requires all applicants to be eligible to work within the United States. Gore generally will not sponsor visas unless otherwise noted on the position description.

For over 65 years, Gore has improved lives through discovery, product innovation and rewarding careers for Associates. We push the boundaries of what's possible - not just through our products and technologies but also through individual growth and development.

We believe in the strength of a diverse and inclusive workplace. With diverse perspectives, ideas and experiences, we uncover new possibilities and make a greater impact in the world. Our Associates build on a rich history of innovation, upholding Gore’s values and supporting an inclusive work environment where we treat each other and our external partners with fairness, dignity and respect.

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