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.

Watch Our Story:' https://www.hdrinc.com/our-story'

Each and every role throughout our organization makes a difference in our ability to change the world for the better. Read further to learn how you could help make great things possible not only in your community, but around the world.

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

What We Believe HDR is our company. Together, we build on each other's life experiences and perspectives to make great things possible every day. This shapes our collaborative culture, encourages organizational trust and connects us closer to the clients and communities we serve.

Our Commitment As employee owners, we all have a role in creating an inclusive environment where each of us is welcomed, valued, respected and empowered to bring our authentic selves to work every day.

Our eight Employee Network Groups (Asian Pacific, Black, Hispanic/Latino(a), LGBTQ+, People with Disabilities, Veterans, Women, Young Professionals) help create a sense of belonging and foster a supportive environment where everyone is empowered to engage and contribute. Each group has an executive sponsor and is open to all employees.

We provide a comprehensive benefits package that promotes employee ownership, employee health, performance, and success, which includes medical, dental, vision, short and long-term disability, life insurance, an employee assistance program, paid time away, parental leave, paid holidays, a retirement savings plan with employer match, employee referral bonus and tuition reimbursement. The expected compensation range for this position depends upon skills, experience, education and geographical location. (Stated benefits are for full-time regular positions. Temporary and part-time roles eligible for limited benefits.) Seattle/Bellevue/Everett, WA: $128,184 - $183,120; Gig Harbor, WA: $117,502 - $167,860; Olympia, WA: $106,820 - $152,600 Primary Location: United States-Washington-Seattle Other Locations: United States-Washington-Everett, United States-Washington-Olympia, United States-Washington-Bellevue, United States-Washington-Gig Harbor Industry: Environment/Sciences Schedule: Full-time Employee Status: Regular BusinessClass: Environmental Planning Job Posting: Jun 8, 2026

At HDR, we are committed to the principles of employment equity. We are an Affirmative Action and Equal Opportunity Employer (https://www.hdrinc.com/equal-employment-opportunity-employer). We consider all qualified applicants, regardless of criminal histories, arrest and conviction records.