Senior Toxicologist

Location US-GA-Marietta
Job ID
# of Openings
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General – Green Earth – Safer World

At UL, we know why we come to work.

Underwriters Laboratories Chemical Insights Research Institute (CIRI) is looking for a Senior Toxicologist to use scientific techniques to evaluate a variety of toxic substances stemming from consumer products and emerging technologies to assess their potential risks and harmful effects. Our core mission at CIRI is to help improve the health of people and the planet. More than 90% of children across the globe are exposed to a toxic mixture of chemicals in the air daily. At CIRI, we are working to change that by combining the best minds with rigorous scientific research and a commitment to thorough and accurate results. We then deliver these scientific insights in actionable ways so educators, manufacturers, healthcare providers, and consumers can make informed environmental health decisions and extend lives.  To be successful in this role you must enjoy planning and carrying out experiments and be able to work within a multidisciplinary team in order to undertake comprehensive studies and investigations.

At Underwriters Laboratories, we wake up every day with a common purpose: to make the world a safer, more secure and sustainable place. Science is in our DNA; we are endlessly curious and passionate about seeking and speaking the truth. We take delight in knowing that our work makes a meaningful contribution to society, and we are proud that our culture is centered on integrity, collaboration, inclusion and excellence. Underwriters Laboratories stands at the forefront of technological advancement, and we are continually challenged to find new ways to foster innovation and positive change. Satisfying? Yes. Exciting? Absolutely! 

What you’ll learn & achieve:

  • Development of in vitro toxicological assessments using guidance from EPA ToxCast, the Endocrine Disruption Screening Program (EDSP) Dashboard and the Chemical and Products Database (CPDat) and the Organization for Economic Co-operation and Development (OECD), European Chemicals Agency (ECHA) and Restriction of Chemicals (REACH) and any other regulatory
  • Gather information, provide guidance, and answer Regulatory agency and project team inquiries regarding all testing standards.
  • Lead and manage the design, monitoring and interpretation of in vitro or pre-clinical chemical/sample assessment studies conducted under Good Laboratory Practices (GLP).
  • Prepare expert reports on toxicology in the support of regulatory documentation.
  • Interpreting the results of biological and volatile organic compound tests for impacts on product safety.
  • Documenting biological risk assessments and analyzing results from Contract Supplement Organizations (CSO’s) in addition to other CIRI partnerships.
  • Interacting with Regulatory Agencies to address test strategies and questions related to toxicological assessments.
  • Communicate with CIRI education teams and CSOs to explain the results of toxicological assessments.

UL has COVID-19 protocols and policies in place to ensure the safety of our employees, customers and clients. Effective November 1, 2021, the company mandates that employees are vaccinated against COVID-19 as a condition of employment (except where prohibited by law), subject to reasonable accommodation as required by law. 

What makes you a great fit:

  • Minimum of a PhD in Toxicology or related fields such as molecular biology, biochemistry, genetics
  • Minimum of 10 years of experience in in vitro and in vivo toxicological evaluations and risk assessments
  • Optional but not required: Certification by the American Board of Toxicology (DABT) or other equivalent health science or medical professional certifications.
  • Experience conducting toxicological assessments and documenting test evidence to support tech briefs, publications and guidance documents.
  • Experience working with outside test labs to generate test plans and evaluate results for compliance
  • Strong commitment to quality
  • Aptitude to understand regulations and compliance standards.
  • Strong ability to work independently with minimal guidance.
  • Ability to multi-task to support simultaneous projects.
  • Ability to overcome obstacles and provide solutions to complex problems.
  • Strong written and verbal communications skills.

What you’ll experience working at UL:

  • Mission: For Underwriters Laboratories, corporate and social responsibility isn’t new. Making the world a safer, more secure and sustainable place has been our business model for the last 127 years and is deeply engrained in everything we do.
  • People: Ask any Underwriters Laboratories employee what they love most about working here, and you’ll almost always hear, “the people.” Going beyond what is possible is the standard at Underwriters Laboratories. We’re able to deliver the best because we employ the best.
  • Interesting work: Every day is different for us here as we eagerly anticipate the next innovation that our customers’ create. We’re inspired to take on the challenge that will transform how people live, work and play. And as a global company, in many roles, you will get international experience working with colleagues around the world.
  • Grow & achieve: We learn, work and grow together with targeted development, reward and recognition programs as well as our very own UL University that offers extensive training programs for employees at all stages, including a technical training track for applicable roles.
  • Total Rewards: All employees at Underwriters Laboratories are eligible for bonus compensation. Underwriters Laboratories offers a generous 401k matching structure of up to 5% of eligible pay. Additionally, we invest an additional 4% into your retirement saving fund after your first year of continuous employment. We provide Healthcare Reimbursement Accounts and Health Savings Accounts that Underwriters Laboratories contributes to twice per year! Depending on your role, you can work with your manager on flexible working arrangements. We also provide employees with paid time off including vacation, holiday, sick and volunteer time off.

Learn More:

Underwriters Laboratories Inc. is a nonprofit organization dedicated to advancing safety science research through the discovery and application of scientific knowledge. We conduct rigorous independent research and analyze safety data, convene experts worldwide to address risks, share knowledge through safety education and public outreach initiatives, and develop standards to guide safe commercialization of evolving technologies. We foster communities of safety, from grassroots initiatives for neighborhoods to summits of world leaders. Our organization employs collaborative and scientific approaches with partners and stakeholders to drive innovation and progress toward improving safety, security, and sustainability, ultimately enhancing societal well-being.


Our wholly owned subsidiary, UL Inc., advances our shared public safety mission. We fund our work through grants, the licensing of standards documents and the business activities of UL Inc., which conducts testing, verification and certification, and provides training and advisory services, along with data-driven reporting and decision-making tools for customers around the world.


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UL is an Equal Opportunity Employer: Female/Minority/disability/Protected Veteran/Sexual Orientation/Gender Identity

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, or disability status. If you'd like more information about your EEO rights as an applicant under the law, please review the EEO is the Law and EEO is the Law Supplement.

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UL EEO Policy

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