Who We Are

RefleXion elevates radiopharmaceuticals from drugs that help identify cancer to guides that actively direct external beam radiotherapy by leveraging tumor biology. Designated an FDA Breakthrough Device for lung tumors, RefleXion's SCINTIX® biology-guided radiotherapy aims to overcome long-standing barriers preventing definitive radiotherapy for metastatic disease. FDA-cleared SCINTIX therapy automates targeting and motion management for use in FDG-guided treatment of lung and bone tumors that arise from primary lung and bone cancers or are metastases from other primary cancers. In strategic collaborations with industry-leading radiopharmaceutical companies, RefleXion is co-developing and co-commercializing disease-specific radiotracers for treating late-stage cancers.

Find out more about RefleXion and SCINTIX therapy at reflexion.com.

Stay up to date with RefleXion by following our channels here:

LinkedInX (formerly Twitter), Instagram, Facebookand YouTube.

About This Role 

The Senior Clinical Applications Specialist, Physicist position provides an opportunity to educate oncology professionals on efficient and effective use of the RefleXion system. This position will involve a wide range of tasks, from participating in curriculum design and development of presentation materials to delivering training at our RefleXion Learning Center and customer sites.  This role also involves site go-live training activities and additional customer refresher training when necessary or requested.   

What You Will Be Doing 

  • Provide clinical instruction in radiation therapy physics using the RefleXion system
  • Work with cross-functional teams to create training materials (PowerPoints, Quick Reference Guides, etc.) for both Oncology Customers (Radiation Oncologists, Medical Physicists, Dosimetrists, Nuclear Medicine Technologists, and Radiation Therapists) and employee training programs
  • Lead, facilitate and/or serve as faculty at customer and employee trainings in our Learning Center in Hayward, CA, virtually, and at the customer site
  • Assist in Acceptance testing and commissioning of RefleXion system
  • Perform individual treatment planning, calculations and plan and QA reviews for physics specific components
  • Perform static and motion experiments with an in-depth analysis to include use of third-party devices
  • Provide expertise in quality assurance checks and dosimetry reviews at customer sites and at the Learning Center
  • Assist with calibration of dose and radiation equipment
  • Ensure compliance with federal, state, local and organizational regulations for radiation safety with use of ionizing radiation as well as radioactive tracer
  • Provide physics support and consultation to radiation oncology personnel and radiation oncologists with regard to patient care and treatment
  • Enhance training materials periodically by generating new training aids such as Quick Guides, e-learnings, etc. with implementation of personalized learning techniques and methodologies to provide continuous learning opportunities for the customers
  • Provide first-line of response support and training to customers
  • Provide support to our sales efforts at customer trade shows or marketing events
  • Partner with our engineering and product teams to enhance product features and usability
  • Participate in new and upgrade product release testing
  • Engage in continuous learning within radiation oncology and be known as a reliable, trusted resource of accurate and up to date medical and scientific knowledge
  • Develop and maintain training curriculum to enable customer efficiencies that drive ‘best of’ and ‘optimized’ use of the RefleXion system
  • Other duties as assigned

Where You Will Do This Job 

  • Remote - This position will allow the successful candidate to work a primarily remote schedule. They must be based in the US and may be required to visit RefleXion customers to perform training in person and come into the RefleXion office in Hayward for meetings and other events as needed.

What We Need 

  • Bachelor of Science degree in Physics or related discipline
  • Experience in Radiation Oncology as a Medical Physicist performing Acceptance Testing and QA procedures
  • Valid certification with the American Board of Radiology (ABR) required
  • A minimum of 3 years of clinical experience in radiation therapy field, in both the clinical and commercial environments
  • Ability to travel up to 75%
  • Demonstrated ability to gather content, create training presentations & present in formal training situations
  • A passion for bringing new technology to customers through engaging training
  • Ability to work effectively as part of a diverse team including physicists, scientists, and engineers
  • Intermediate knowledge of business tools such as Microsoft Office Suite
  • Ability to communicate effectively, both orally and in writing, at a variety of technical levels
  • Meets all Vendor Credentialing requirements necessary to gain client site access
  • Ability to work and solve problems independently, and perform thorough, in depth analyses
  • Ability to analyze available literature, task group reports, etc.
  • Must be a self-starter and work with minimum supervision.
  • Excellent people skills and troubleshooting capabilities required
  • Ability to interact with customers and prospects in a professional timely manner while providing support and training

Ways To Stand Out 

  • Master's degree in Physics or related discipline preferred
  • Experience with a variety of treatment machines as well as treatment planning systems is a "plus"
  • Experience in a commercial start-up ideal
  • Command of adult learning theory, classroom education, and digital training preferred 

What You Will Love About Working with Us!

  • The opportunity to work with a passionate, driven team in a pre-IPO start-up environment
  • Flexible work location and schedule available for many positions - see above for specific work location for this position
  • Competitive compensation and Pre–IPO stock option packages
  • Medical (both HMO and PPO options), Dental and Vision
  • Health Savings Account (HSA), Flexible Spending Account (FSA), Dependent Care Flexible Spending Account (DCFSA)
  • Pre-tax Commuter Benefits
  • Employee Assistance Program (EAP)
  • 401(k)
  • 3 Weeks/Year PTO Accrual rate to start and 12 Paid Company Holidays
  • Employer paid Life Insurance, short-term and long-term disability
  • RefleXion Benefit Hub –Company exclusive discounts and deals on a variety of sites and items
  • Weekly catered on-site lunches as well as kitchens filled with a variety of healthy and delicious food and drinks – including an espresso machine and panini stations!
  • Employee Events – Variety of Workshops, Lunch ‘n Learns, Financial Wellness education, Regular “Coffee Chats” with Executive Leadership, Scavenger Hunts, Company Milestone celebrations and more!
  • Electric car charging stations on site

The pay range for this role is $115,000 - $175,000 annually.  Actual compensation packages are based on several factors that are unique to each candidate, including but not limited to skill set, depth of experience, certifications, and specific work location. This may be different in other locations due to differences in the cost of labor. The total compensation package for this position may also include bonus, stock, benefits and/or other applicable variable compensation.

Values and Diversity 

RefleXion is an equal opportunity employer. All aspects of employment including the decision to hire will be based on merit, competence, performance, and business needs. We do not discriminate based on race, color, religion, marital status, age, national origin, ancestry, disability/medical​​​ condition, pregnancy, genetic information, gender, sexual orientation, gender identity or ​expression, veteran status, or any other status protected under federal, state, or local law.

Apply for this Job

* Required

resume chosen  
(File types: pdf, doc, docx, txt, rtf)
cover_letter chosen  
(File types: pdf, doc, docx, txt, rtf)
When autocomplete results are available use up and down arrows to review
+ Add another education


Voluntary Self-Identification

For government reporting purposes, we ask candidates to respond to the below self-identification survey. Completion of the form is entirely voluntary. Whatever your decision, it will not be considered in the hiring process or thereafter. Any information that you do provide will be recorded and maintained in a confidential file.

As set forth in RefleXion Medical’s Equal Employment Opportunity policy, we do not discriminate on the basis of any protected group status under any applicable law.

Race & Ethnicity Definitions

If you believe you belong to any of the categories of protected veterans listed below, please indicate by making the appropriate selection. As a government contractor subject to the Vietnam Era Veterans Readjustment Assistance Act (VEVRAA), we request this information in order to measure the effectiveness of the outreach and positive recruitment efforts we undertake pursuant to VEVRAA. Classification of protected categories is as follows:

A "disabled veteran" is one of the following: a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or a person who was discharged or released from active duty because of a service-connected disability.

A "recently separated veteran" means any veteran during the three-year period beginning on the date of such veteran's discharge or release from active duty in the U.S. military, ground, naval, or air service.

An "active duty wartime or campaign badge veteran" means a veteran who served on active duty in the U.S. military, ground, naval or air service during a war, or in a campaign or expedition for which a campaign badge has been authorized under the laws administered by the Department of Defense.

An "Armed forces service medal veteran" means a veteran who, while serving on active duty in the U.S. military, ground, naval or air service, participated in a United States military operation for which an Armed Forces service medal was awarded pursuant to Executive Order 12985.


Voluntary Self-Identification of Disability

Form CC-305
Page 1 of 1
OMB Control Number 1250-0005
Expires 04/30/2026

Why are you being asked to complete this form?

We are a federal contractor or subcontractor. The law requires us to provide equal employment opportunity to qualified people with disabilities. We have a goal of having at least 7% of our workers as people with disabilities. The law says we must measure our progress towards this goal. To do this, we must ask applicants and employees if they have a disability or have ever had one. People can become disabled, so we need to ask this question at least every five years.

Completing this form is voluntary, and we hope that you will choose to do so. Your answer is confidential. No one who makes hiring decisions will see it. Your decision to complete the form and your answer will not harm you in any way. If you want to learn more about the law or this form, visit the U.S. Department of Labor’s Office of Federal Contract Compliance Programs (OFCCP) website at www.dol.gov/ofccp.

How do you know if you have a disability?

A disability is a condition that substantially limits one or more of your “major life activities.” If you have or have ever had such a condition, you are a person with a disability. Disabilities include, but are not limited to:

  • Alcohol or other substance use disorder (not currently using drugs illegally)
  • Autoimmune disorder, for example, lupus, fibromyalgia, rheumatoid arthritis, HIV/AIDS
  • Blind or low vision
  • Cancer (past or present)
  • Cardiovascular or heart disease
  • Celiac disease
  • Cerebral palsy
  • Deaf or serious difficulty hearing
  • Diabetes
  • Disfigurement, for example, disfigurement caused by burns, wounds, accidents, or congenital disorders
  • Epilepsy or other seizure disorder
  • Gastrointestinal disorders, for example, Crohn's Disease, irritable bowel syndrome
  • Intellectual or developmental disability
  • Mental health conditions, for example, depression, bipolar disorder, anxiety disorder, schizophrenia, PTSD
  • Missing limbs or partially missing limbs
  • Mobility impairment, benefiting from the use of a wheelchair, scooter, walker, leg brace(s) and/or other supports
  • Nervous system condition, for example, migraine headaches, Parkinson’s disease, multiple sclerosis (MS)
  • Neurodivergence, for example, attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder, dyslexia, dyspraxia, other learning disabilities
  • Partial or complete paralysis (any cause)
  • Pulmonary or respiratory conditions, for example, tuberculosis, asthma, emphysema
  • Short stature (dwarfism)
  • Traumatic brain injury

PUBLIC BURDEN STATEMENT: According to the Paperwork Reduction Act of 1995 no persons are required to respond to a collection of information unless such collection displays a valid OMB control number. This survey should take about 5 minutes to complete.


Our system has flagged this application as potentially being associated with bot traffic. Please turn off any VPNs, clear your browser cache and cookies, or try submitting your application in a different browser. If this issue persists, please reach out to our support team via our help center.
Please complete the reCAPTCHA above.