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About Us

We are a California-based environmental consulting firm with 500+ professionals and over 30 years of experience serving clients across the transportation, energy, water, infrastructure, private development, and government sectors. We are proud to be a **Certified Great Place to Work** , as reflected in the experiences our employees share on Glassdoor and the trust, connection, and sense of purpose felt across our company.

Our mission is to deliver practical, science-based environmental and planning solutions that support communities, infrastructure, and natural systems. At Rincon, people come first. We value collaboration, fairness, and transparency, and we are committed to creating an environment where everyone can grow, contribute meaningfully, and do their best work.

About the Role

We are seeking **As-Needed/On-Call Desert Tortoise Designated Biologists** to provide field-based compliance monitoring and survey support for projects across the California desert and Eastern Sierra regions, as well as Southern Nevada and Northwestern Arizona.

Primary consideration will be given to candidates currently approved by the U.S. Fish and Wildlife Service (USFWS) and/or California Department of Fish and Wildlife (CDFW) as Desert Tortoise Designated Biologists.

Candidates with prior desert tortoise monitoring experience who are not yet approved may be considered on a limited basis, but designated biologist status is strongly preferred and will determine project assignment priority and compensation.

What You’ll Do

Responsibilities will vary based on experience level, regulatory approvals, and project needs.

Core Responsibilities

+ Serve as a Desert Tortoise Designated Biologist or desert tortoise biological monitor on active construction projects, providing compliance oversight in accordance with USFWS and CDFW permit conditions.

+ Conduct pre-construction clearance surveys, worker environmental awareness briefings, construction monitoring, and compliance inspections for desert tortoise and other covered species.

+ Perform site assessments, biological surveys, and habitat evaluations for common and special-status wildlife and plant species in desert and Eastern Sierra environments.

+ Track and document compliance with avoidance, minimization, and mitigation measures; maintain accurate field notes, monitoring logs, and daily reports.

+ Prepare pre-construction survey reports, compliance monitoring reports, and other technical documentation required by permits and approvals.

+ Coordinate closely with construction crews, environmental compliance teams, and project managers to resolve biological constraints and maintain regulatory compliance.

+ Provide field-based guidance to contractors and project teams to ensure adherence to permit requirements and biological protection measures.

+ Lead or support surveys and monitoring for desert tortoise, including work in occupied habitat, exclusion fencing oversight, and compliance documentation.

+ Conduct surveys and monitoring for other special-status wildlife species as project needs require, which may include:

+ Flat-tailed horned lizard

+ Fringe-toed lizard

+ Burrowing owl

+ Golden eagle

+ Bi-State sage-grouse

+ Mohave ground squirrel

+ Desert kit fox

+ Bighorn sheep

Senior-Level Responsibilities

+ Oversee biological compliance on complex or large-scale projects.

+ Provide technical direction and mentorship to junior staff and biological monitors.

+ Serve as a subject matter expert for desert tortoise compliance, supporting permitting, agency coordination, and project planning efforts.

What You’ll Bring

+ Bachelor’s or Master’s degree in biology, botany, ecology, environmental science, or a related field.

+ Current or prior approval through the U.S. Fish and Wildlife Service (USFWS) and/or California Department of Fish and Wildlife (CDFW) as a Desert Tortoise Designated Biologist is strongly preferred and will be prioritized.

+ 3–5+ years of biological fieldwork experience.

+ Expertise in Mojave and Eastern Sierra ecosystems, including experience with desert tortoise compliance monitoring, habitat assessments, vegetation monitoring, and species-specific surveys.

+ Familiarity with federal and state environmental laws, including Endangered Species Acts (ESA), California Environmental Quality Act (CEQA), and (Clean Water Act) CWA requirements, overseeing regulatory compliance, and implementing mitigation measures.

+ Demonstrated experience with the species listed above, including surveying and monitoring in occupied habitats and securing project approvals.

+ Excellent verbal and written communication skills, including strong technical writing experience preparing field reports, monitoring logs, and preconstruction survey documentation.

+ Ability to hike 6–8 miles per day in challenging terrain and variable weather conditions while carrying up to 25 lbs of equipment.

+ Willingness and flexibility to work extended hours (10–12+ hour days) as project needs require.

+ Strong capability to work independently in the field while maintaining effective coordination with project teams.

+ Experience working both collaboratively and independently, demonstrating sound judgment and self-direction.

Nice to Have

+ Prior approval through the U.S. Fish and Wildlife Service (USFWS) or California Department of Fish and Wildlife (CDFW) for species listed above, in addition to desert tortoise.

+ Wetland delineation and regulatory permitting experience.

+ Prior experience as a field lead.

Compensation

The hourly rate for this as-needed position ranges from $40.00–$55.00 per hour, depending on experience, qualifications, and responsibilities. Salary ranges are based on the market median of similar jobs, according to third-party salary benchmark surveys. Base pay is determined based on internal equity and a candidate’s job-related knowledge, skills, and experience.

Additional Employment Information

Individuals offered employment must successfully complete a pre-employment drug screening as a condition of employment. Additionally, those hired who may be assigned to federal projects will be subject to further drug testing, including screening for cannabinoids (THC/marijuana), in compliance with the Drug-Free Workplace Act of 1988 and other applicable federal regulations, which take precedence over California state and local laws.

Rincon Consultants, Inc. is an equal opportunity and affirmative action employer that considers qualified applicants for employment without regard to race, religious belief, color, sex, pregnancy, childbirth or related medical conditions, age, national origin, ancestry, sexual orientation, gender identification, gender expression, physical or mental disability, medical condition, genetic characteristics, family care, marital status, military and veteran or qualified disabled veteran status, or any other classification protected by law. Rincon Consultants, Inc. participates in the U.S. Department of Homeland Security’s E-Verify Program to ensure that all employees hired are legally able to work in the United States.