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Biologist (Mid-level) – Irvine, CA

19400001421 Requisition #

Discover your full potential. At Tetra Tech, we are working together for the future of our world. We combine engineering and science with advanced analytics and technology to solve the world’s most complex challenges.  Our innovation hubs across the globe will enable you to share ideas and best practices while growing your professional network. Wherever you are in your career journey, you will benefit from working with world-class engineers, scientists, and technologists.


Apply today and join the company that is Leading with Science®.


Tetra Tech’s commitment to hiring the best talent in the industry and helping them thrive professionally is stronger than ever. Our Irvine, CA office is currently seeking a Biologist (Mid-level) with a strong wildlife background and project management experience to support a variety of projects primarily within our energy practice. Our energy practice includes routing, siting, and permitting of wind and solar energy power generation, electric transmission lines and substations, natural gas pipelines, and other related facilities.


In this role, we are looking for an enthusiastic biologist with experience in field surveys biological resources and technical report writing. We are also looking for someone who can manage a project and has experience with the California Environmental Quality Act (CEQA) and the National Environmental Policy Act (NEPA) processes and permitting.


The primary responsibility of the position would be to conduct field surveys for wildlife, particularly birds by sight/sound, vegetation/habitat, and special-status species, provide technical reports documenting the results of surveys, and manage tasks related to the development of energy projects. The position would require that the individual be proficient in task management, including data collection, data management, and technical writing.


The position would require a combination of field and office work and would be based out of one of our California offices.  Fieldwork would take place in a variety of climates and ecological regions with a focus in California. The position would require an ability to balance office work responsibilities as well.



  • Conduct field surveys for biological resources (wildlife, habitat/vegetation, special-status species).
  • Write technical reports, proposals, and review reports prepared by peers.
  • Provide permitting consulting and recommendations and project management to energy-sector clients.
  • Develop cost estimates for biological resource tasks for a range of projects.
  • Work concurrently on several projects each at different phases.
  • Travel during the field season.


  • Expertise in conducting field surveys for wildlife, including special-status species that occur in California, both independently and as part of a team.
  • Ability to conduct avian surveys such as raptor nest surveys, point-count surveys by sight and sound, and/or burrowing owl surveys.
  • Experience in writing technical reports, describing baseline conditions, and analyzing impacts on protected species and their habitat.
  • Knowledge and understanding of federal and state regulations pertaining to wildlife and plants.
  • Experience with CEQA and NEPA processes and managing projects to meet permitting timelines.
  • Attention to detail, ability to work independently, willingness to work as part of team, and the ability to stay positive and effective during long days in the field.
  • Willing to work in sometimes difficult conditions and often miles from a vehicle. Physical challenges typically encountered may include long off-trail hikes, steep slopes, extreme hot and cold conditions, and biological hazards (animals and plants).
  • Data management and excellent oral and written communication skills are essential.
  • Safety conscious and able to continually assess ways to mitigate hazards.
  • Possess a valid driver’s license.
  • Able to work with and communicate with a diverse group of co-workers and clients to provide high quality and efficient work products.


Education, Experience, and Qualifications:

  • Bachelor’s degree in natural sciences.
  • At least 5 years of experience with 8 years or more preferred.
  • A strong background of coursework and/or experience in a natural science (e.g., birds, botany, ecology) and field data collection.
  • Demonstrated ability to identify birds and other wildlife by sight and sound.
  • Ability to identify and describe vegetation and habitat quality as it relates to certain species.
  • Demonstrated ability to perform basic data analyses, compile data, and write technical documents.
  • Demonstrated ability to use and create spreadsheets or databases to summarize data and create tables.
  • Comfortable with mobile technology (e.g. cell phone, tablet) for electronic data collection.


Other Desirable Knowledge and Experience:

  • Positive attitude, willingness to learn, and enjoyment of working outdoors.
  • Experience conducting special status species surveys, such as desert tortoise, burrowing owl, kit fox, and other surveys for other special-status species that occur in California.
  • Experience writing proposals and estimating costs.
  • Ability to identify rare plants and noxious weeds.
  • Ability to effectively communicate with regulatory agencies and clients.
  • Experience with wetland delineations.
  • Ability to research and interpret federal, state, and local regulations on a project-specific basis to assess project permitting feasibility and requirements.
  • Experience with environmental impact analysis related to energy and land management projects; biological resources mitigation, design and monitoring; and construction monitoring.



Salary commensurate with experience.

Salary Range: $80,000 - $120,000


About Tetra Tech:

Tetra Tech combines the resources of a global, multibillion-dollar company with local, client-focused delivery in more than 400 locations around the world. Our reputation rests on the technical expertise and dedication of our employees—20,000 associates working together to provide smart, scalable solutions for challenging projects. We are proud to be home to leading technical experts in water, environment, infrastructure, resource management, energy, and international development.


Explore our open positions at https://www.tetratech.com/careers. Follow us on social media to learn more about our people, culture, and opportunities:


LinkedIn: @TetraTechCareers


Twitter: @TetraTechJobs


Facebook: @TetraTechCareers


Tetra Tech is proud to be an Equal Opportunity Employer. Diversity, inclusion, and equity are among Tetra Tech’s core values. Throughout our history, the company has prioritized equitable inclusion of all people. All qualified candidates will be considered without regard to race, color, religion, national origin, military or veteran status, gender, age, disabilities, sexual orientation, gender identity, pregnancy and pregnancy-related conditions, genetic information and any other characteristics protected by the law. We invite resumes from all interested parties. Please visit our website at www.tetratech.com to see the array of diverse services and exciting projects we are currently working on.


Tetra Tech is a VEVRAA federal contractor and we request priority referral of veterans for available positions.


We thank all applicants for their interest, however, only those candidates selected for interviews will be contacted.


Please no phone calls or agencies.







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