Senior Human Health Risk Assessor

Environmental At Jacobs, we're challenging today to reinvent tomorrow by solving the world's most critical problems for thriving cities, resilient environments, mission-critical outcomes, operational advancement, scientific discovery and cutting-edge manufacturing, turning abstract ideas into realities that transform the world for good.

Your impact

When it comes to environmental consulting, we’re focused on cleaning up our communities today to improve tomorrow. We’re looking for a senior human health risk assessor to work on exciting site investigation and remediation projects for government and private-sector clients within and outside the United States. The position will draw on strong planning and communication expertise. You will be a key team member joining multi-disciplinary teams on major projects.

A successful candidate will demonstrate strong communication skills along with relevant technical experience and regulatory interaction expertise, in addition to successful financial performance and client satisfaction on their projects. You will spend a majority of your time leading human health risk assessment projects, mentoring more junior members of your teams. This position is a great opportunity for a candidate who is a self-starter and who is eager to grow in new and exciting ways in the world’s largest consulting engineering firm.

Most projects will require thoughtful strategy development, leveraging technical expertise with client and stakeholder collaboration. All projects need to be delivered with high safety, compliance, and quality standards expected by both Jacobs and our clients. Our global team is here to provide you with the tools to keep your career growing. By driving consistency and innovation across site characterization and remediation projects, you’ll help your team achieve our clients’ goals. Safety will be your priority as you contribute to “incident free” operations and maintain the highest standards of Health & Safety in everything you do.

Bring your strategic focus and critical thinking skills and continue your environmental career at Jacobs – where we’ll empower you to learn and grow as you deliver environmental projects that make our world better.

Here's what you'll need

• Master’s Degree or PhD in Biology, Biochemistry, Toxicology, Public Health, or related science.
• Self-motivated professional with at least 15 years of demonstrated human health risk assessment experience (multi‑media: soil, groundwater, surface water, sediment, soil vapor, indoor air, biota)
• Ability to handle multiple projects and meet aggressive deadlines
• Up‑to‑date knowledge of federal and state regulatory risk assessment practices
• Strong written and verbal communication skills and a team-oriented attitude
• Clear/concise communication of complex technical information (written & verbal) for both technical and non‑technical audiences
• Demonstrated prior experience leading risk assessment projects for private and government clients with a strong track record that includes planning, investigation, remediation, and monitoring impacted properties under state and federal programs.
• Experience evaluating toxicology, epidemiology, genotoxicity and carcinogenicity data
• Proficiency with USEPA CERCLA, RCRA, and state regulatory guidance
• Experience with exposure assessment modeling and quantitative risk calculations
• Experience contributing to development of Work Plans, Sampling & Analysis Plans, Quality Assurance Project Plans, QAPPs, Remedial Investigation/Feasibility Study reports, Proposed Plans, and Five Year Reviews
• Experience performing technical reviews of risk assessments for compliance with guidance and decision‑making processes
• Incorporation of the vapor intrusion pathway into risk assessments
• Air monitoring design and results interpretation
• Statistical analysis using Excel; experience with R/SAS preferred
• Data quality evaluations for large datasets
• Use of New Approach Methods to estimate/predict toxicity/risk
• Experience with client interaction, regulator engagement, and public/stakeholder outreach
• Participation in professional organizations
• Experience making p resentations at professional conferences
• Experience developing and conducting risk assessment training courses
• Support of sales/ing efforts

Additional Skills Preferred

• Evaluation of emerging contaminants (e.g., PFAS, pharmaceuticals, microplastics)
• Diplomate of the American Board of Toxicology ( DABT) certification
• E nvironmental justice issues
• P reparation o f Health Impact Assessments
• Litigation support

Estimated travel requirement is approximately 5-15%, generally related to client and agency meetings. Some overnight travel may be required. You will be allowed to work remotely up to 60% of the time, with the remaining 40% of the time in the nearest Jacobs office.

#LI-AC4

Posted Salary Range: Minimum

119,400.00

Posted Salary Range: Upper

175,000.00

Our health and welfare benefits are designed to invest in you, and in the things you care about. Your health. Your well-being. Your security. Your future. Employees have access to medical, dental, vision, and basic life insurance, a 401(k) plan, and the ability to purchase company stock at a discount. Eligible employees may also enroll in a deferred compensation plan or the Executive Deferral Plan. Jacobs has an unlimited U.S. Personalized Paid Time Off (PPTO) policy for full-time salaried/exempt employees, seven paid holidays, and caregiver leave. And certain roles may be eligible for additional rewards, including merit increases, performance discretionary bonus, and stock.

The base salary range for this position is $119,400.00 to $175,000.00. Within the range, individual pay is determined by work location and additional factors, including job-related skills, experience, and relevant education or training.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status. Job posted on January 29, 2026. This position will be open for at least 3 days.

At Jacobs, we’re partnering across the globe to create the best project outcomes by maximizing the design, digital technology, and support capabilities of our Global Integrated Delivery (GID) teammates. By joining Jacobs, you’ll commit to supporting and engaging with these teams, as we work to build a company like no other.

We value collaboration and believe that in-person interactions are crucial for both our culture and client delivery. We empower employees with our hybrid working policy, allowing them to split their work week between Jacobs offices/projects and remote locations enabling them to deliver their best work.

Your application experience is important to us, and we’re keen to adapt to make every interaction even better. If you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the team via Careers Support .

Locations

City State Country
Houston	Texas	United States
Atlanta	Georgia	United States
San Diego	California	United States
Greenwood Village	Colorado	United States
Seattle	Washington	United States
Chicago	Illinois	United States
Philadelphia	Pennsylvania	United States