Sr. Scientist, Scientific Affairs

Glanbia
Downers Grove, IL

Glanbia Performance Nutrition (GPN) is the number one sports nutrition company in the world, with leading brands in performance and lifestyle nutrition. Our mission is to inspire people everywhere to achieve their performance and healthy lifestyle goals. From athletes to remote workers, people around the world want to eat well and live healthier, more active lives. Our award-winning performance and lifestyle brands include Optimum Nutrition, Isopure, BSN, think! bars, Amazing Grass and more.Whether you want to build muscle, reach peak performance, eat more protein-rich foods, or lose weight, we have a product to match.

We are hiring a Senior Scientist, Scientific Affairs, who will be responsible for the evaluation of scientific literature to support claims substantiation and compliance of products for GPN’s global business. This includes identifying and evaluating new ingredients, technologies and products for compliance and efficacy, substantiating marketing claims, and designing and overseeing clinical trials and analyzing the data to evaluate efficacy of products.

Responsibilities for the Sr Scientist, Scientific Affairs include:

  • Perform scientific evaluation of new products, ingredients and technologies to determine viability and application to GPN across various brands and regions.
    • Develop and propose substantiated product claims for use on packaging and other marketing materials.
    • Monitor current scientific literature for new and emerging information in health and nutrition that can be applied to, or result in, new products or claims.
  • Design, manage and implement GPN sponsored clinical studies.
    • Design and write appropriate clinical trial protocols, case report forms, investigator brochures, clinical study reports and clinical sections of regulatory documents.
    • Analyze and interpret data to develop marketing claims, charts and other scientifically substantiated communications and marketing assets.
    • Collaborate closely with internal teams to support activities necessary for successful commercialization of clinically researched nutritional products.
  • Communicate sound science information (written or oral) within the company and to targeted external groups in order to enhance business initiatives. Serve as the scientific expert to collaborate with various groups within and outside the company to address business needs.
  • Assist in activities related to engagement with academic, industry, and regulatory partners
  • Attend relevant trade shows and scientific conferences

Education and Training:

  • MS in Exercise Physiology or Related Field with 5+ years industry experience OR PhD with 2+ years postdoc or industry experience preferred
  • Strong verbal and written communication skills (including analysis, interpretation, & reasoning)
  • Ability to develop and maintain collaborative relationships with peers and colleagues Strong computer skills (MS Word, Excel, PowerPoint etc.)
  • Previous clinical research experience including experience with quantitative methods of research design and evaluating new technologies
  • Strong analytical, prioritizing, interpersonal, problem-solving, presentation, budgeting, project management (from conception to completion), & planning skills
  • Knowledge of Food and Drug Administration (FDA), Good Clinical Practice (GCP) and International Council of Harmonization (ICH) guidelines as applicable

As the Senior Scientist, you will work across functions within R&D, Quality Assurance, Regulatory Affairs, Legal, and Consumer Affairs representing a safety and regulatory perspective within multi-disciplinary internal teams, as well as with external scientists and regulators.

About Glanbia

Glanbia Performance Nutrition has enjoyed consistent double-digit growth which has been achieved both organically and through acquisition. Today, GPN has approximately $1.2B in revenue and 2,500 employees worldwide. With state-of-the-art production facilities occupying over 500,000 square feet of operating space, GPN is the only sports nutrition company to manufacture and market items in every product category.

What we would like to offer you!

The opportunity to develop your career on a global stage, continuous learning through an on-demand learning platform, and a competitive compensation package including staff discounts, generous family leave policy, health & dental plan, competitive salary, 401K. Apply now and make a difference in the world of health and wellness! Compensation for roles at Glanbia varies depending on a wide range of factors including but not limited to the specific office location, role, skill set and level of experience. Glanbia provides a reasonable range of compensation for roles that may be hired in IL. The annual salary for IL based employees for this role is $90,000 - $125,000 plus an annual bonus. This range may not be applicable to other locations. Factors that could be used to determine your actual salary may include your specific skills, years of experience and comparison to current employees already in this role.

Glanbia is a better nutrition company with three divisions: Performance Nutrition, Health & Nutrition and Dairy Nutrition.Collectively and with our partners we offer an incredible breadth of expertise in nutrition. We employ a team of 5800 people, work with global food and beverage companies, and sell our award-winning and market-leading brands and ingredients in more than 100 countries worldwide. 

At Glanbia, we celebrate diversity, because we know that our individual strengths make us stronger together. We welcome and encourage interest from a wide variety of candidates, and we will give your application consideration, without regard to race, color, religion, sex, sexual orientation, gender perception or identity, national origin, age, marital status, protected veteran status, or disability status.

At Glanbia our culture will celebrate individuality, knowing that together we are more.

Posted 2026-01-28

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