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Garden City Hospital, a member of Prime Healthcare, offers incredible opportunities to expand your horizons and be part of a community dedicated to making a difference. Responsibilities: Under the guidance of the Medical Director of Radiology, assumes responsibility for calibrating equipment and performing quality assurance according to state and federal regulations in Radiation Oncology.

Overview:
Join an award-winning team of dedicated professionals committed to our core values of quality, compassion and community! Garden City Hospital, a member of Prime Healthcare, offers incredible opportunities to expand your horizons and be part of a community dedicated to making a difference.  At Garden City Hospital, we pride ourselves on community involvement and commitment to preserving access to quality and compassionate healthcare. We are a state-of-the-art medical facility with over 300 licensed beds and a teaching hospital, offering medical education to students, residents and fellows from across the country. The residency and fellowship programs offer graduate medical education to more than 80 trainees in specialties. Garden City Hospital has an award-winning staff of over 350 of the area's best and brightest physicians from almost every specialty. Learn more at <a href="http://www.gch.org" rel="noopener nofollow noreferrer" target="_blank">www.gch.org</a>. 

Responsibilities:
Under the guidance of the Medical Director of Radiology, assumes responsibility for calibrating equipment and performing quality assurance according to state and federal regulations in Radiation Oncology. Assists in treatment planning and other appropriate support to the department. Principle duties and responsibilities include the following areas: Radiation Oncology, Nuclear Medicine, Diagnostic Radiology and Radiation Safety.

Qualifications:
Education and Work Experience 1. Master’s degree in radiologic physics. 2. Certification by the American College of Radiology or equivalent. 3. Minimally two years’ experience as a clinical medical physicist within a radiation oncology setting preferred. 4. BLS certification. #LI-KJ1

Employment Status:
Full Time

Shift:
Days

Equal Employment Opportunity:
<div class="iCIMS_InfoMsg iCIMS_InfoMsg_Job"><div class="iCIMS_Expandable_Container"><div class="iCIMS_Expandable_Text">Company is an equal employment opportunity employer. Company prohibits discrimination against any applicant or employee based on race, color, sex, sexual orientation, gender identity, religion, national origin, age (subject to applicable law), disability, military status, genetic information or any other basis protected by applicable federal, state, or local laws. The Company also prohibits harassment of applicants or employees based on any of these protected categories. Know Your Rights: <a href="https://www.eeoc.gov/sites/default/files/2022-10/EEOC_KnowYourRights_screen_reader_10_20.pdf" rel="noopener nofollow noreferrer" target="_blank">https://www.eeoc.gov/sites/default/files/2022-10/EEOC_KnowYourRights_screen_reader_10_20.pdf</a></div></div></div><div class="iCIMS_JobOptions"><div class="iCIMS_JobOptionsMobile iCIMS_JobOptionsMobile_Options3" id="jobOptionsMobile"> </div></div>

Garden City Hospital

Medical Physicist

Basic Life Support (BLS)

Diagnostic Radiology

Federal Laws and Regulations

Fellowship

Healthcare

Healthcare Quality

Hospital

Nuclear Medicine

Physics

Quality Assurance

Quality Management

Radiation Safety

Radiation Therapy

Radiology

State Laws and Regulations

Training/Teaching

[AW]-iCims

YEAR

About Us:
Rivian is on a mission to keep the world adventurous forever. This goes for the emissions-free Electric Adventure Vehicles we build, and the curious, courageous souls we seek to attract.  As a company, we constantly challenge what’s possible, never simply accepting what has always been done. We reframe old problems, seek new solutions and operate comfortably in areas that are unknown. Our backgrounds are diverse, but our team shares a love of the outdoors and a desire to protect it for future generations. 

Responsibilities:
<ul><li>As the senior CFD simulations, you will support design and optimization of lubrication and cooling performance of powertrain Drive Units assemblies including e-motors.</li><li>Build, validate and maintain 3D CFD models (steady state and transient) using industry-standard tools (e.g., Simerics, Star-CCM+ or similar) to predict oil splash, pressure drop, heat transfer, and flow distribution across key systems.</li><li>Build, validate and maintain 1D lubrication models (steady state and transient) using industry-standard tools (e.g., AMESIM, GT Suite, Matlab or similar) to predict spray and splash lubrication, churning losses, aeration effect, pressure drop, heat transfer, and flow distribution across key systems.</li><li>Define boundary conditions, load cases, and duty cycles using vehicle usage profiles and test data to ensure simulations represent real customer usage and worst-case environmental conditions.</li><li>Translate simulation results into clear design recommendations for component owners (Driveline, powertrain, Motor), including geometry changes, ducting strategies, and shielding/insulation concepts.</li><li>Collaborate with designers and system engineers to balance lubrication, thermal, NVH, durability, and manufacturability requirements in a cross-functional environment.</li><li>Develop and refine correlation between CFD and physical tests, including defining test plans, instrumentation needs, and success criteria for lubrication and thermal validation at component, system, and vehicle level.</li><li>Support root cause analysis on development and field issues where lubrication and thermal performance are potential contributors; propose data-driven corrective actions and design updates.</li><li>Help build and standardize CFD methodologies, best practices, and templates (meshing strategies, model reduction approaches, post-processing standards) to accelerate analysis throughput and improve quality.</li><li>Communicate complex analysis results through concise reports and presentations tailored to design engineers, leadership, and cross-functional partners.</li></ul>

Qualifications:
<ul><li>B.S. in Mechanical Engineering, Aerospace Engineering, Automotive Engineering, or related field required.</li><li>M.S. or Ph.D. with a focus in fluid mechanics, heat transfer, or CFD strongly </li><li>Minimum 5 years of relevant experience in CFD and 1D thermal analysis for automotive, aerospace, energy, or similar industries (advanced degrees may count toward experience).</li><li>Proven expertise in 1D and CFD pre-processing, solving, and post-processing (Simerics, Star-CCM+ or equivalent).</li><li>Working experience with Simerics-MP+ for rotating machine and gearbox oil splash simulation is a plus.</li><li>Strong foundation in multiphase turbulence physics, fluid dynamics and heat transfer (VOF, surface tension, aeration, conduction, convection, radiation, conjugate heat transfer and turbulence model) with deep understanding in tribology.</li><li>Proficiency in handling complex moving geometries using sliding mesh, overset mesh or morphing techniques for rotating gears, bearings and shafts.</li><li>Strong foundation in fluid dynamics and heat transfer (convection, radiation, conjugate heat transfer, pressure loss, turbulence modeling).</li><li>Experience with Drive Unit or system-level simulations (Full Drive Unit/Transmission flow, thermal management or similar).</li><li>Familiarity with duty cycles and durability concepts (e.g., Oil pump and thermal cycling, life prediction based on SN or temperature-time exposure is a plus).</li><li>Working knowledge of parametric CAD tools and geometry handling (CATIA or similar) sufficient to prepare CFD-ready models and influence design.</li><li>Experience scripting in Python, MATLAB, or similar for process automation, data reduction, and parametric studies.</li><li>Ability to work independently while also thriving in a highly cross-functional team; comfortable driving analysis workstreams end-to-end with minimal supervision.</li><li>Strong communication skills: able to explain complex CFD and thermal behavior in a way that is accessible to non-specialists and actionable for design teams.</li><li>A growth mindset with curiosity to explore new tools, methods, and approaches to improve accuracy, speed, and robustness of analysis workflows.</li></ul>

Pay Disclosure:
Salary Range Michigan-Based Applicants: $98,500-$123,100 (actual compensation will be determined based on experience, and other factors permitted by law). Benefits Summary: Rivian provides robust medical/Rx, dental and vision insurance packages for full-time employees, their spouse or domestic partner, and children up to age 26. Coverage is effective on the first day of employment.

Company Statements:
<h4>Equal Opportunity</h4>Rivian is an equal opportunity employer and complies with all applicable federal, state, and local fair employment practices laws. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, ancestry, sex, sexual orientation, gender, gender expression, gender identity, genetic information or characteristics, physical or mental disability, marital/domestic partner status, age, military/veteran status, medical condition, or any other characteristic protected by law. Rivian is committed to ensuring that our hiring process is accessible for persons with disabilities. If you have a disability or limitation, such as those covered by the Americans with Disabilities Act, that requires accommodations to assist you in the search and application process, please email us at <a href="mailto:candidateaccommodations@rivian.com?subject=Application%20to%20Rivian%20-%20Assistance%20Request" target="_blank" rel="noopener">candidateaccommodations@rivian.com</a>.<h4>Candidate Data Privacy</h4>Rivian may collect, use and disclose your personal information or personal data (within the meaning of the applicable data protection laws) when you apply for employment and/or participate in our recruitment processes (“Candidate Personal Data”). This data includes contact, demographic, communications, educational, professional, employment, social media/website, network/device, recruiting system usage/interaction, security and preference information. Rivian may use your Candidate Personal Data for the purposes of (i) tracking interactions with our recruiting system; (ii) carrying out, analyzing and improving our application and recruitment process, including assessing you and your application and conducting employment, background and reference checks; (iii) establishing an employment relationship or entering into an employment contract with you; (iv) complying with our legal, regulatory and corporate governance obligations; (v) recordkeeping; (vi) ensuring network and information security and preventing fraud; and (vii) as otherwise required or permitted by applicable law.  Rivian may share your Candidate Personal Data with (i) internal personnel who have a need to know such information in order to perform their duties, including individuals on our People Team, Finance, Legal, and the team(s) with the position(s) for which you are applying; (ii) Rivian affiliates; and (iii) Rivian’s service providers, including providers of background checks, staffing services, and cloud services.  Rivian may transfer or store internationally your Candidate Personal Data, including to or in the United States, Canada, the United Kingdom, and the European Union and in the cloud, and this data may be subject to the laws and accessible to the courts, law enforcement and national security authorities of such jurisdictions.   Please note that we are currently not accepting applications from third party application services.

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Medical Physicist Garden City Hospital

Sr. CFD Engineer, Powertrain Rivian

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