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Mid-Career Toxicologist/Risk Assessor

Geosyntec Consultants
paid holidays, sick time, 401(k)
United States, Massachusetts, Boston
Jan 30, 2026

Mid-Career Toxicologist/Risk Assessor
Primary Location

US-MA-Boston
ID

2026-4214




Category
Risk Assessment and Toxicology

Position Type
Regular Full-Time

Remote
No

Additional Location
US-WA-Seattle



Overview

Gradient, a Geosyntec Company, is seeking a motivated and resourceful Mid-Level Toxicologist/Risk Assessor to apply knowledge of toxicology to science-based risk evaluations related to human and environmental risk. You will have the opportunity to join our growing practice in our Boston, MA or Seattle, WA office.

Gradient is an environmental and health risk sciences consulting firm specializing in environmental sciences, human and ecological risk sciences, product stewardship, and life sciences. Gradient's scientists have a variety of backgrounds in chemistry, engineering, toxicology, epidemiology, ecotoxicology, medical device and pharmaceuticals, exposure sciences, industrial hygiene, GIS, product safety and liability, and sustainability.

We invest in our people. Each employee is unique, and your career at Gradient will be too. We offer competitive pay and benefits, and well-being programs to support you and your family.

To Learn More Visit: http://www.geosyntec.com/careers/



Essential Duties and Responsibilities

    Critically evaluate animal and in vitro toxicological data and results to assess potential for human health risks from exposure to chemicals in the environment and consumer products.
  • Perform various analyses in support of toxicology projects, including tabulation of toxicology study data and evaluation of results, for reports, systematic reviews, and hazard assessments.
  • Conduct literature searches and critically review and evaluate toxicology studies for strengths and weaknesses regarding study quality, relevance, and reliability for use in human health risk assessment.
  • Project work related to toxicology may include systematic reviews, hazard assessments, occupational health and safety assessments, litigation support, regulatory comment, product safety assessments, and site-specific human health risk assessments.
  • Assist in the preparation of deliverables (reports, manuscripts, memoranda, presentations, project proposals, agency comments).
  • Opportunities to manage small- to medium-sized projects.


Education and Licensure

  • Bachelor's or Master's degree in toxicology or related sciences. (required)
  • Ph.D. in toxicology. (preferred)


Skills, Experience and Qualifications

  • At least 5 years (7+ preferred) of environmental consulting experience related to toxicology; or equivalent combination of education and experience. (required)
  • Exceptional written and oral communication skills. (required)
  • Scientific writing experience in the form of first-author peer-reviewed publications related to the field of toxicology, as well as experience presenting data at scientific conferences. (required)
  • Hands-on laboratory background and experience in chronic in vivo toxicity assays, and/or molecular/mechanistic toxicology or related sciences, including conducting in vivo (animal) and/or in vitro (e.g., cell culture) experiments and data collection, analysis, and reporting/synthesis of results. (required)
  • Knowledge of exposure and dose-response modeling methods and tools (e.g., benchmark dose [BMD] modeling, physiologically based pharmacokinetic [PBPK] modeling). (valuable)
  • Knowledge of food additive, consumer or medical product, pharmaceutical, pesticide, chemical, occupational, or environmental regulations, air modeling, and other exposure assessment techniques. (valuable)
  • Background in conducting or contributing to systematic reviews. (valuable)

This opportunity will be posted for at least five days. Below are the potential compensation ranges that we in good faith believe are applicable for this role at the time of this posting and are only applicable for jobs to be performed in the specified location(s) below. The typical base salary range for this position is just one component of Geosyntec's total compensation package for employees. Actual compensation will be determined based on education, experience, skill set and location.

  • Minimum: $97,255 /year / Maximum: $145,940 /year (Seattle, WA)
  • Minimum: $101,675/year / Maximum: $152,575 /year (Boston, MA)

We offer a comprehensive benefits package to all eligible employees including, 9 paid holidays, 2 floating holidays, a minimum of 8 sick days, and a minimum of 11 vacation days per year, in line with state or federal requirements. Employees (and their families) are offered medical, dental, vision, life, and disability insurance, 401(k), a variety of leaves of absences and other benefits to eligible employees.

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