V

Varian

Tech-enabled radiation oncology hardware and software

Foundation AI Research Scientist

Full-TimeUpdated on 10/23/2026
$128.7k - $177k
Expert
Master's, PhD
United States
Hybrid
AI & Machine LearningAI Research
Company Historically Provides H1B Sponsorship

About the job

Requirements
  • A PhD in Computer Science, Electrical Engineering, Biomedical Engineering, or a related technical field, with research focused on machine learning, artificial intelligence, computer vision, medical imaging, or a closely related discipline; exceptional candidates with a Master's degree and significant research or industry experience developing advanced AI systems will also be considered.
  • Demonstrated research experience developing advanced machine learning or deep learning models.
  • Strong understanding of modern deep learning architectures and training methodologies.
  • Experience in one or more areas such as foundation models and large-scale pretrained models, multimodal learning, vision-language models, computer vision, generative AI, self-supervised or representation learning, few-shot or zero-shot learning, knowledge or model distillation, or medical imaging AI.
  • Strong programming skills and experience using modern deep learning frameworks.
  • Ability to translate emerging research concepts into practical AI systems and experimental prototypes.
  • Strong scientific communication and cross-functional collaboration skills.
Responsibilities
  • Design and develop large-scale multimodal foundation models for healthcare and medical imaging applications.
  • Research next-generation AI architectures and learning strategies capable of delivering significant improvements in downstream clinical performance.
  • Develop innovative model distillation, transfer learning, few-shot, and zero-shot learning approaches to accelerate expansion of AI capabilities across a broad range of clinical findings and use cases.
  • Advance multimodal AI capable of learning across medical images, clinical text, patient history, and other healthcare data sources.
  • Explore approaches that move AI systems toward increasingly autonomous capabilities supporting clinical decision-making, workflow automation, and personalized patient care.
  • Design methods to improve model generalization, robustness, uncertainty awareness, interpretability, and reliability in complex clinical environments.
  • Stay at the forefront of developments in foundation models, multimodal learning, computer vision, generative AI, and medical AI research.
  • Collaborate closely with AI researchers, software engineers, clinical experts, and product teams to connect foundational AI research with real-world healthcare applications.
  • Support integration of multimodal AI systems incorporating medical imaging, electronic health records, clinical text, real-time monitoring, and other healthcare data.
  • Translate research prototypes and novel AI methodologies into scalable approaches suitable for real-world clinical environments.
  • Help enable the transition of advanced AI technologies from research into solutions capable of deployment across healthcare institutions worldwide.
  • Advance research in AI safety, reliability, robustness, and interpretability for clinical AI systems.
  • Develop approaches that help ensure foundation models perform reliably across diverse patient populations, clinical environments, and data distributions.
  • Support the development of AI technologies aligned with clinical-grade performance expectations, responsible AI principles, and applicable healthcare requirements.
  • Contribute technical expertise toward evolving healthcare AI regulations and emerging AI safety frameworks.
  • Publish impactful research in leading journals and conferences such as TPAMI, Medical Image Analysis (MedIA), IEEE Transactions on Medical Imaging (TMI), CVPR, ICCV, ECCV, and other relevant venues.
  • Identify opportunities for novel intellectual property and contribute to patent development.
  • Collaborate with internal and external research communities to advance the state of the art in foundation AI for healthcare.
Desired Qualifications
  • Research experience with large-scale multimodal or vision-language foundation models.
  • Experience pretraining, fine-tuning, adapting, or evaluating large AI models.
  • Experience developing AI models using medical imaging or other healthcare data.
  • Experience with model compression, knowledge distillation, parameter-efficient adaptation, or related techniques.
  • Experience with self-supervised learning, weakly supervised learning, few-shot learning, or zero-shot generalization.
  • Experience evaluating model robustness, uncertainty, interpretability, or safety.
  • Strong publication record at leading AI, computer vision, or medical imaging conferences and journals.
  • Experience translating research into production or clinically relevant AI systems.
  • Track record of innovation demonstrated through publications, patents, open-source contributions, or deployed AI technologies.

About the company

Varian, part of Siemens Healthineers, focuses on oncology by providing integrated radiation oncology solutions that combine software, hardware, patient data, and care teams. Its offerings include treatment-planning software, radiation therapy machines, and data-management systems that work together to enable precise cancer treatments. The company differentiates itself through an integrated platform approach and services like Oncology-as-a-Service (OaaS), which lets healthcare providers adopt advanced radiation oncology with ongoing service support rather than large upfront investments. Varian serves healthcare providers such as hospitals and cancer centers, helping them deliver coordinated care and improve patient outcomes. Its goal is to reduce the fear of cancer by using data and technology to support clinicians in delivering effective treatments.

Company Size

5,001-10,000

Company Stage

IPO

Headquarters

Palo Alto, California

Founded

1948

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Simplify's Take

What believers are saying

  • ARPA-H awarded Varian up to $60 million in April 2026 for FLASH-RT.
  • FDA cleared TrueBeam for osteoarthritis in March 2026, opening a non-cancer market.
  • Telix collaboration and 2026 AI approvals expand Varian's clinical and software pipeline.

What critics are saying

  • RaySearch enabled online adaptive TrueBeam workflows in Belgium in May 2026, eroding software differentiation.
  • Elekta still attacks Varian's lead in adaptive radiotherapy and premium MR-guided care.
  • If FLASH and non-oncology bets fail by 2028, Varian becomes a commoditized linear-accelerator vendor.

What makes Varian unique

  • Siemens Healthineers gives Varian imaging, radiotherapy, and capital-sales integration globally.
  • Varian's 2026 CE-marked Eclipse AI contouring deepens workflow lock-in across planning.
  • TrueBeam, Halcyon, and Ethos create an installed-base moat hospitals rarely replace.

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Benefits

  • Flexible Work Hours
  • Remote Work Options
  • Paid Vacation
  • Paid Holidays
  • Health Insurance
  • Dental Insurance
  • Vision Insurance
  • Wellness Program
  • 401(k) Retirement Plan

Growth & Insights and Company News

6 month growth

3%

1 year growth

3%

2 year growth

3%
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We strive to help customers become world-class system suppliers by strengthening their competitiveness and enabling them to bring products to market faster

MEDQOR
Apr 30th, 2026
Siemens Healthineers secures $83M to develop photon Flash radiotherapy for cancer treatment

Siemens Healthineers has received up to $60 million from the US Advanced Research Projects Agency for Health to develop photon Flash radiotherapy, with the company contributing an additional $23 million, totalling $83 million over five years. Flash photon therapy delivers radiotherapy more than 100 times faster than current technologies, aiming to reduce side effects and improve healthy tissue sparing. Unlike proton and electron beam platforms, which face scalability challenges, photon beams are the standard of care for over 50% of cancer patients. The project will build on existing C-arm linear accelerators to enable broader clinical access. Siemens Healthineers aims to transition ultra-high dose rate radiotherapy from experimental treatment into global standard of care within the five-year timeframe.

Business Wire
Mar 19th, 2026
Varian TrueBeam gets FDA clearance for low-dose radiotherapy to treat osteoarthritis

Siemens Healthineers has received FDA 510(k) clearance for its Varian TrueBeam radiotherapy systems to treat medically refractory osteoarthritis in adults using low-dose radiation therapy. This marks the first expansion of Varian's radiotherapy platform beyond cancer care into chronic musculoskeletal conditions. Osteoarthritis affects over 33 million adults in the US and approximately 600 million globally. The clearance covers TrueBeam, TrueBeam STx, VitalBeam and Edge systems, offering patients with persistent pain a non-invasive outpatient treatment option that targets inflammation, reduces pain and improves joint function. The approval builds on Varian's previous regulatory clearances for non-oncological indications, including radiosurgery treatment for medically refractory essential tremor. The TrueBeam platform combines high-resolution imaging with precise dose control whilst maintaining streamlined clinical workflows.

AuntMinnieEurope.com
Dec 10th, 2025
Telix and Varian enter research collaboration

Telix and Varian enter research collaboration. Telix Pharmaceuticals and Siemens Healthineers' company Varian have agreed to develop novel clinical applications that combine Telix's theranostics products and Varian's external beam radiation therapy (EBRT) technology. The first area of focus will be in identifying opportunities to use Telix's prostate cancer PET imaging agents in selecting patients for EBRT, developing personalized treatment plans (particularly in the context of Varian's Ethos adaptive radiotherapy system), and monitoring responses to treatment, Telix said. The agreement supports both company-sponsored and investigator-led clinical studies. Varian is a key player in EBRT and working with the company will allow Telix to explore how theranostics can be used more effectively by radiation oncologists to enhance patient selection and deliver targeted treatment, Telix noted. I agree to receive marketing related digital communications about products, services, events and offers that may be relevant to my given user preferences and behavior. I agree to share my information with the sponsor. I have read and agree to the privacy policy & terms of service and wish to opt-in.

AuntMinnie.com
Mar 28th, 2025
Varian, Embolx sign image-guided microcatheter agreement

Siemens Healthineers company Varian has entered into a sales and marketing agreement with Embolx for its Sniper Balloon Occlusion Microcatheter.