Environmental Toxicologist - Senior Level (Hybrid)

About This Role

This senior environmental toxicologist role supports complex, multidisciplinary projects focused on contaminated sediment, surface water, groundwater, and ecological risk assessment. The work involves conducting ecological risk assessments, developing toxicity and exposure evaluations, interpreting environmental chemistry and toxicology data, and preparing technical reports and documentation. The ideal candidate brings strong analytical judgment, excellent technical writing skills, advanced knowledge of environmental toxicology, and experience working within regulatory frameworks.

Responsibilities

• Apply advanced environmental toxicology principles to evaluate chemical exposure and effects across sediment, water, and biological systems
• Interpret chemistry and toxicity data to support ecological risk assessments and help inform remedial decision-making
• Lead or support project and task delivery, including developing scopes, schedules, and budgets, managing teams, and producing high-quality technical documents
• Foster strong client relationships and contribute to successful execution of complex environmental projects
• Assess site-specific environmental conditions and develop scientifically defensible approaches aligned with CERCLA, RCRA, and other regulatory programs
• Provide clear technical and regulatory recommendations that support environmental decisions and cleanup strategies
• Prepare clear, compliant technical documentation and effectively communicate complex concepts to both technical and non-technical audiences
• Collaborate with multidisciplinary teams and clients to align technical work with project objectives while fostering strong, productive working relationships
• Mentor junior staff, support team development, and contribute positively to Barr’s culture of teamwork, respect, and client service

Requirements

• Master’s degree in environmental toxicology, environmental science, chemistry, environmental engineering, ecology, or a related field
• Minimum of 8 years of relevant experience supporting contaminated site investigations, environmental toxicology evaluations, or ecological risk assessments in consulting, industry, laboratory, or regulatory settings
• Strong computer skills, including proficiency with Microsoft Office Suite and the ability to work effectively with environmental datasets, toxicity results, and technical documentation
• Familiarity with CERCLA, RCRA, NRDA, NEPA, ESA, and the Clean Water Act
• Possession of a current, valid driver’s license and an acceptable driving record
• Must be legally authorized to work in the United States without the need for sponsorship by Barr, now or in the future

Nice to have:

• Modeling experience using PHREEQC and Geochemist’s Workbench
• Experience conducting or interpreting toxicity tests, bioassessments, or ecological field surveys
• Experience coordinating with regulatory agencies, stakeholder groups, or multiparty PRP teams
• Experience with business development or client relationship management
• HAZWOPER 40-hour certification

Benefits

• Discretionary cash bonus based on team and individual performance
• Competitive, affordable insurance plans: Medical, dental, vision, life, disability, accidental death insurance, and flexible spending accounts for medical and dependent care
• Retirement benefits: 401(k) retirement savings plan with company contribution and an Employee Stock Ownership Plan (ESOP) with company contribution in Barr stock
• Profit distribution through annual bonus distribution plan, ESOP, and dividends to shareholders
• Professional development benefits: Annual time and expense allowances, mentorship program, and many internal training opportunities
• Paid time off, holidays, overtime for non-exempt/hourly staff, and compensatory time for exempt/salaried staff (time off or pay for extra time worked), paid family leave
• Wellness focus: Ergonomic analysis and equipment, Personal Protective Equipment allowance, wellbeing-focused educational opportunities

Important Details

• Work format: hybrid work arrangement may be considered, splitting time between a Barr office and a home office
• Locations: Barr's Seattle, Washington, or Denver, Colorado, offices
• Travel expectation: willingness to travel and periodically adjust personal schedule to meet project needs; fieldwork opportunities may be available, depending on project needs, interests, and experience, and may include some out-of-town travel
• Work environment: ability to work in locations that may feature rough terrain typical of construction sites and may also require entering and working in facilities that include limited accessibility, moving machinery, and other conditions typical of industrial facilities. Job assignments may involve work on waste disposal sites and sites requiring cleanup of hazardous materials. An OSHA-mandated physical exam may be required. Safety training will be provided. Applicants may be asked to participate in a drug screening program at the request of specific clients.
• Physical requirements for site visits and/or fieldwork: ability to conduct fieldwork in varying outdoor conditions (e.g., heat, cold, rain, uneven terrain); must be able to lift and carry equipment and materials weighing up to 50 pounds; capable of standing, walking, kneeling, or crouching for extended periods; use of personal protective equipment (PPE) as required by site conditions; ability to safely operate or work around environmental monitoring and sampling equipment

About the Company

At Barr, you'll join a community of engineers, scientists, and professionals who will help you achieve your ambitions and build a meaningful, rewarding career. The employee-owned firm values diverse perspectives and experiences and believes an inclusive workplace is critical to its success.