**Our Business** We are a global leader in environmental consulting - made stronger with the recent acquisition of Wood’s Environment & Infrastructure business and Golder - with world-class expertise in environmental, social and governance (ESG), climate resiliency & sustainability (CRS), and earth sciences. Combined we have over 20,000 multidisciplinary professionals worldwide collaborating daily to protect and conserve natural landscapes, create firm foundations for communities to stand on, and champion sustainable development to combat climate change. As part of the team, you will have access to an unparalleled network of resources and endless opportunities to collaborate on exciting projects with diverse teammates from across the globe. **This Opportunity** WSP is seeking a **Senior Human Health Risk Assessor** with at least 10 years of experience to support our growing risk assessment and toxicology practice. We are seeking an experienced human health risk assessor to collaborate with our current team of risk assessment professionals in project planning and execution as well as public outreach and stakeholder communication. Risk assessments will be prepared to meet the requirements of the United States Environmental Protection Agency and many States’ environmental regulatory programs. The ideal candidate would work closely with our team in the Chelmsford, Massachusetts area while also being part of the larger operations within the company. WSP offers the opportunity and flexibility to balance work in the office and from home, with three in-office days expected. **Your Impact** The position will involve coordination and implementation of project work associated with multimedia (air, water, and soil) risk assessments and environmental regulatory compliance in the industrial/commercial and government sectors as well as project management. This position offers the opportunity to work with a large and diverse team of engineers and scientists to address complex environmental challenges and includes the following roles/responsibilities: + Direct and supervise technical assignments and manages entire projects or specific elements of projects; + Perform as lead risk assessor authoring proposals and projects; + Extensive client and regulator interaction, particularly with scoping of risk assessments and application of the risk assessment results and conclusions in site decision-making; + Provide technical review for projects to comply with environmental regulations, company standards, contract requirements, and related specifications; and + Occasional travel for projects, conferences, business development, or training. **Who You Are** + B.S. or M.S. in Toxicology, Biology, Public Health or related scientific discipline + 10+ years of relevant experience in conducting, authoring, directing, and performing technical review of multi-media human health risk assessments with increasing levels of project complexity and responsibility + Extensive hands-on knowledge of human health risk assessment principles, procedures, and guidance particularly USEPA CERCLA + Demonstrated successful interactions across a range of private sector and governmental clients + Performance and technical review of multi-media baseline human health risk assessments for common and emerging contaminants + Completion of projects through feasibility studies and Records of Decision (including identifying risk-based remedial goals) + Extensive experience in scoping, managing, and conducting risk assessment components for each of the stages of the CERCLA process including: + Development of work plans and QAPPs (including evaluating sampling strategies and appropriateness of data for risk assessment) + Experience with risk communication with clients and stakeholders, and at conferences and professional organizations including presenting complex technical information in a concise and accurate manner + Experience with per- and polyfluoroalkyl substances is preferred Our employees have the opportunity to work on diverse projects for industry and government clients with the support and resources of a large international organization with unlimited career opportunities. At the same time, our team takes pride in maintaining a close collaborative environment. We have a very comfortable and supportive culture, working with a deep bench of knowledgeable geologists, scientists, engineers, chemists, and database specialists. We realize that our people are what make us known in the industry and recognized for delivering high quality and technical excellence. If you want to be a part of a dedicated and brilliant team, we’d love to hear from you! **About WSP** WSP USA is the U.S. operating company of WSP, one of the world's leading engineering and professional services firms. Dedicated to serving local communities, we are engineers, planners, technical experts, strategic advisors and construction management professionals. WSP USA designs lasting solutions in the buildings, transportation, energy, water and environment markets. With more than 15,000 employees in over 300 offices across the U.S., we partner with our clients to help communities prosper. www.wsp.com WSP provides a flexible and agile workplace model while meeting client needs. Employees are also afforded a comprehensive suite of benefits including medical, dental, vision, disability, life, and retirement savings focused on providing health and financial stability throughout the employee’s career. At WSP, we want to give our employees the challenges they seek to grow their careers and knowledge base. Your daily contributions to your team will be essential in meeting client objectives, goals and challenges. Are you ready to get started? WSP USA (and all of its U.S. companies) is an Equal Opportunity Employer Race/Age/Color/Religion/Sex/Sexual Orientation/Gender Identity/National Origin/Disability or Protected Veteran Status. The selected candidate must be authorized to work in the United States. **NOTICE TO THIRD PARTY AGENCIES:** WSP does not accept unsolicited resumes from recruiters, employment agencies, or other staffing services. Unsolicited resumes include any resume or hiring document sent to WSP in the absence of a signed Service Agreement where WSP has expressly requested recruitment/staffing services specific to the position at hand. Any unsolicited resumes, including those submitted to hiring managers or other business leaders, will become the property of WSP and WSP will have the right to hire that candidate without reservation – no fee or other compensation will be owed or paid to the recruiter, employment agency, or other staffing service.