Senior Radiochemist

Are you looking to be part of a game-changing organization that is helping thousands of patients across the country every day? NorthStar Medical Radioisotopes is seeking individuals with a pro-active, collaborative, can-do mindset to join our rapidly growing team in Beloit, WI.

NorthStar develops, manufactures, and distributes radioisotopes used daily for patients needing medically important diagnostic imaging tests.  Using novel and advanced technologies, NorthStar will scale-up production over the coming months and years and intends to become the industry’s market leader.

Innovative technology, opportunities for career advancement, and competitive compensation are just the beginning. NorthStar offers health and life insurance, 401K match, paid holidays, and paid time off, and all NorthStar employees are eligible on day one for our annual bonus and equity incentive plans.


The Senior Radiochemist is responsible for analyzing radioactive samples generated in NorthStar’s production or development laboratories, maintenance and calibration of radiation measurement equipment, and may assist with quality control of products. As the senior member of the Science group, will assist management in day to day operations as needed

Duties and Responsibilities

  • Perform radiochemical separations as needed to support product development.
  • Review, evaluate, prepare and follow Standard Operating Procedures, method validation, and equipment qualifications.
  • Plans and conducts testing to generate data in support of product development and commercial operations.
  • Investigate and develop hypothesis related to radiochemical isotope production issues or failures.
  • Assist in the optimization of radiochemical syntheses for isotope production.
  • Operate, maintain and calibrate radiation measurement equipment, including but not limited to: gamma spectroscopy systems, liquid scintillation counting systems with alpha and beta counting modes, gas proportional counting systems, dose calibrators, survey meters, wipe test counters, etc.


Master’s degree in Chemistry or related physical science and 6 or more years of experience in a Radiochemistry position; or equivalent combination of education and experience. Understanding of alpha, beta and gamma counting equipment calibration, operation, and maintenance required. Knowledge and experience using Eichrom Technologies extraction chromatographic resins is preferred. Open, wet chemical experience with radioisotopes used in nuclear medicine preferred.


NorthStar Medical Radioisotopes is headquartered in Beloit, Wis. This location is our primary manufacturing site and accommodates all of our corporate functions. Beloit has small city charm, with a lively and renovated downtown, yet is also close to cities such as Madison, Milwaukee, Chicago, and Rockford.

Beloit is a part of the larger South Central Wisconsin/Northern Illinois region, which offers residents and visitors alike a unique blend of urban opportunities and rural, natural beauty. The area, therefore, offers collections of natural, educational, artistic, and historical attractions alongside a wide variety of sporting and social opportunities. There are several cities and many towns within a reasonable commute of Beloit, which offer a wide choice of residential styles and a large number of school district choices for those considering relocation.

If you are interested in applying for this position, please forward your resume to [email protected] with the position title in the subject line.

NorthStar Medical Radioisotopes is an equal opportunity employer. Employment decisions are made without regard to race, color, religion, national or ethnic origin, sex, sexual orientation, gender identity or expression, age disability, protected veteran status or other characteristics protected by law.

Senior Radiochemist – 1800 Gateway Blvd. Beloit, WI 53511