Join the best radiopharmaceutical company in the world!

If you’re looking to make an impact while building a meaningful career in a specialized, fast-growing field, NorthStar Medical Radioisotopes is the place to do it. NorthStar Medical Radioisotopes is a growing, commercial-stage company focused on advancing patient care by providing therapeutic radioisotopes and novel radiopharmaceuticals to detect and treat cancer.

At the forefront of NorthStar’s technological innovation is scientific excellence, using first-in-kind electron accelerator technology and integrated campus capabilities to drive progress in radiopharmaceutical manufacturing. Our work is driven by a meaningful mission—advancing life-saving radiopharmaceutical development and ensuring a reliable supply of critical medical isotopes for patients in need. As a rapidly growing organization operating on the cutting edge of science, we offer exceptional career growth and professional development opportunities, supported by world-class facilities and a competitive benefits package.

Under the direction of the Director, Accounting, the Senior Accountant performs general accounting and finance duties, in accordance with company and established accounting policies and procedures.

• Prepare and record asset, liability, revenue, and expense entries by compiling and analyzing account information.
• Research and assess Accounting Standards Codification (ASC) implications. Support implementation of updated standards.
• Prepare technical memos that document accounting issues in a clear, concise manner.
• Review and reconcile subsidiary accounts; resolving discrepancies.
• Maintain general ledger.
• Maintain and reconcile fixed asset schedule.
• Manage day-to-day activities in treasury functions and cash planning.
• Analyze financial data and manage financial statement preparation and budget reports.
• Prepare monthly budget to actual reporting.
• Prepare bi-weekly payroll.
• Support month-end and year-end close process.
• Assist with annual audits and tax returns.
• Assist with any implementation, managing, and monitoring of ERP system.

• Develop a strong understanding of the ERP system, chart of accounts, financial reporting structure, and key accounting processes.
• Develop ownership of the month-end assigned duties with the goal of independently completing responsibilities accurately and within established close deadlines.
• Identify process improvement opportunities within your assigned accounting processes and recommend efficiencies or opportunities for automation.
• Develop ownership of the fixed asset schedule, including additions, disposals, depreciation, reconciliations and supporting documentation.

Minimum Education/Experience Requirements

Bachelor’s degree in Accounting or Finance and minimum four (4) years of relevant experience; or equivalent combination of education and experience.  Proficient in GAAP principles. Proven experience with complex accounting issues. 

Experience with ASC implementation preferred. Strong technical accounting experience desired.

Please note the company cannot provide immigration-related sponsorship (including H-1B status, O-1 status, Optional Practical Training support, etc.) for this position.  Each successful applicant will be required to complete the Form I-9, Employment Eligibility Verification, demonstrating both identity and employment authorization, on or before the first day of employment.  Under federal law, only truthful information may be provided on the Form I-9.

• Medical, dental, and vision insurance
• Healthcare Flex Spending Account (FSA) and Dependent Care FSA
• Company-paid short-term and long-term disability
• Company-paid life insurance & AD&D coverage
• Pet insurance
• 401(k) match
• Paid holidays and paid time off (PTO)
• Paid parental leave
• Bonus plan
• Equity Incentive Program

This role may involve working in a controlled cleanroom environment, general office setting, or specific manufacturing areas. Conditions may include:

• Exposure to varying temperatures, both indoors (heated/air-conditioned spaces) and outdoors
• Noise levels range from quiet to loud, depending on the work area
• Specific vision abilities, including near vision, visual acuity, and color discrimination

Personal Protective Equipment (PPE) is required and may include:

• Respirators, gloves, safety glasses, and full protective clothing
• Compliance with cleanroom gowning protocols (e.g., removal of all jewelry, including piercings)
• Prohibition of cosmetics, fragrances (perfume, aftershave), and nail products, including polish, artificial nails, or extensions

As a radiopharmaceutical manufacturing site, radiation may be present in the laboratory and production areas. Employees in this role may be required to:

• Follow strict radiation safety procedures
• Participate in dosimetry monitoring and bioassay testing as part of the company protocol
• Inform leadership of any health conditions that may affect product integrity, by cleanroom standards

NorthStar Medical Radioisotopes is proud to call Beloit, Wisconsin home. Our headquarters and primary manufacturing facility are located in this vibrant, growing community that combines the charm of a small city with the advantages of a central Midwest location. Beloit features a lively, revitalized downtown filled with local restaurants, shops, and cultural events, and is just a short drive from major metropolitan areas including Madison, Milwaukee, Chicago, and Rockford.

Situated in the heart of the South Central Wisconsin and Northern Illinois region, Beloit offers a rare blend of urban amenities and scenic natural surroundings. Whether you’re drawn to outdoor recreation, educational institutions, the arts, or historic landmarks, the area provides rich and diverse experiences for all interests. A variety of nearby communities, ranging from rural towns to suburban neighborhoods, offer flexible housing options and access to multiple school districts, making Beloit an excellent choice for individuals and families considering relocation.

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.