Biologist - Part/Full-time

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?
Watch 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.
We believe transportation is more than movement, it's the foundation of connected, thriving communities. As part of HDR's Transportation Business Group, you'll help shape the systems that move people and goods safely, efficiently, and sustainably. From designing resilient highways and iconic bridges to advancing transit, passenger and freight rail, aviation, federal transportation ports and marine infrastructure, your work will directly support economic vitality, public safety, sustainable and resilient communities and quality of life. We bring together planners, engineers, architects, construction management staff, environmental, strategic communications, economists, management consultants and specialists across disciplines to solve complex mobility challenges with innovation, technical excellence, and a deep understanding of community needs. Whether you're modernizing aging infrastructure or pioneering next-generation transportation solutions, your contributions will help define the future of mobility. This isn't just a job, it's a chance to lead progress, drive meaningful impact, and leave a legacy of smarter, more connected transportation networks. We are all employee-owners at HDR, which is the foundation of our collaborative culture that connects employees around the world. In the role of Biologist I, we'll count on you to:

Conduct biological field surveys, habitat assessments, species monitoring, and ecological data collection.
Record, organize, analyze, and interpret environmental and biological data using GIS and statistical software.
Assist with wildlife studies, population monitoring, behavioral observations, and conservation-related projects.
Prepare technical reports, maps, figures, presentations, and project documentation.
Support environmental compliance, natural resource management, and conservation initiatives.
Work effectively in diverse field conditions and terrain while adhering to safety protocols.
Support environmental and biological projects by applying standard scientific techniques to field surveys, data collection, analysis, and technical reporting.
Work independently on routine assignments with clearly defined objectives while assisting senior biologists on larger, multidisciplinary projects.
Coordinate with project teams and provide direction to technical or clerical staff as needed.
Perform other project-related duties as assigned.
Due to client contract requirements, US citizenship is required.

#LI-JF1

Invertebrate research experience.
Proficient in ArcGIS, QGIS, RStudio, geospatial analysis, and quantitative ecological methods.
Experience with wildlife capture and handling, mark-recapture techniques, and population density analysis.
Demonstrated ability to communicate scientific findings through technical presentations, posters, and public outreach.
Experience in ecological research, field data collection, geospatial analysis, and quantitative data interpretation.
Required Qualifications

Bachelor's degree in Biology or closely related field
Proficiency with MS Office
Strong oral and written communication skills
Ability to work independently and as part of a team
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 is $71,000 - $82,000 and 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.) Primary Location: United States-California-Irvine Industry: Freight Rail Schedule: Full-time Employee Status: Regular BusinessClass: Environmental Planning Job Posting: Oct 19, 2026