Senior Environmental Scientist

Senior Environmental Scientist At HDR, our employee-owners are fully engaged in creating a welcoming environment where each of us is valued and respected, a place where everyone is empowered to bring their authentic selves and novel ideas to work every day. As we foster a culture of inclusion throughout our company and within our communities, we constantly ask ourselves: What is our impact on the world? At HDR, our employee-ownership model shapes everything we do, including how we support and care for our people. Our diverse service lines, including Water, Architecture, Building Engineering Services, Field Services, Power, Waste, Industrial, and Transportation reflect our commitment to shaping resilient, sustainable, and forward-thinking communities around the world. Across these disciplines, our teams design and deliver solutions that safeguard public health, enhance quality of life, power innovation, and drive responsible growth. Whether advancing clean water, creating healing and learning environments, engineering next-generation facilities, or building the infrastructure that moves people and energy, our work is rooted in technical excellence and a shared sense of purpose. Our employee-owners collaborate across specialties, combining creativity, precision, and deep expertise to solve the most complex challenges facing our clients and communities. In the role of Senior Environmental Scientist, we'll count on you to: Lead and direct wetland and stream delineations, functional assessments, wildlife surveys, and habitat evaluations while managing task level scope, budgets, and schedules. Oversee preparation of natural resources permitting applications at federal, state and local level (e.g., Clean Water Act permitting Section 404/401 and WA State/local natural resources permitting) Lead development of critical areas reports, wetland and water delineation reports, mitigation and monitoring plans and documents to address project impacts Contribute as an author and/or strategic advisor on natural resource documents such as NEPA/SEPA documents, and biological evaluations/assessments (BAs). Provide quality assurance / quality control (QA/QC) review of technical documents from disciplines noted above. Support project managers and other technical staff with client-agency communications. Develop proposals for biological-related tasks (preparing scopes, schedules, and budgets). Effectively collaborate with junior and mid-level environmental staff, planners, project engineers, GIS specialists, and clients to achieve regulatory compliance on a variety of projects. Perform other related duties as needed Preferred Qualifications: Field experience with wetland and wildlife species and habitats in Washington State. Applied knowledge of ecological assessment, environmental impact analysis, environmental due diligence studies, natural/biological resources management and Strong organization skills and ability to work in a fast-paced work environment with changing deadlines and priorities. Demonstrable technical writing/editing ability, commitment to quality in both work processes and products and willingness to assume new roles are critical. A demonstrated commitment to safety and quality, and an attitude and commitment to being an active participant of our employee-owned culture are essential. Candidates will need to travel for specific project assignments. Field data collection expertise in wildlife species, habitat, and wetlands and streams using GPS units Professional Wetland Scientist (PWS) Experience with GPS units, GIS software and webmaps, to support data collection, mapping, and reporting. Local candidates preferred Valid Washington State Driver's license and ability to travel locally on a regular basis to conduct field work. Required Qualifications: Bachelor's degree in Environment Science or closely related field 10 years experience in complex environmental planning/compliance projects Demonstrated knowledge of the NEPA process Experience managing large, complex EIS documents for transportation, large facility, land management, or other infrastructure projects Technical expertise in the design, implementation, interpretation and presentation of data for environmental studies and investigations in specialized discipline Proficient with MS Office Self-starter with excellent writing and communication skills Strong conceptual, organizational, problem-solving and research abilities Ability to work independently and as part of a team Staff management experience beneficial An attitude and commitment to being an active participant of our employee-owned culture is a must HDR is committed to the principles of employment equity. We are an Affirmative Action and Equal Opportunity Employer. We consider all qualified applicants, regardless of criminal histories, arrest and conviction records.