New

Field Biologist (On-Call)

Environmental Science Associates
$24.34—$38.56 USD
sick time, 401(k)
United States, California, San Francisco
550 Kearny Street (Show on map)
Feb 11, 2026
Environmental Science Associates (ESA) is a 100% employee-owned environmental consulting firm. We plan, design, permit, mitigate, and restore for projects across our communities, infrastructure systems, open spaces, and wildlands. We are 50 years strong in 21 offices across California, the Pacific Northwest, and the Southeastern United States. ESA is seeking variable part-time (on-call) field biologists with 0-5 years experience. Preference given to candidates with 1+ years of professional experience. Qualified candidates must be located in the San Francisco Bay Area, vicinity of Sacramento, Sacramento-San Joaquin River Delta, Central Valley, or within 3 hours. All qualified candidates must be willing & able to travel as needed. Preference given to candidates located in the bay area and central valley of CA. The need for on-call services is expected to be greatest in late summer through fall with periodic work throughout other parts of the year. Additional work beyond this period may be requested. Who You Are Qualified candidates should have previous experience performing natural resource-related evaluations, technical studies, analyses and tasks requiring knowledge based on education and at least two years of professional experience. Previous construction monitoring experience required. Qualified candidates must demonstrate the ability to perform all aspects of biological monitoring on small to large, complex construction projects. Some night and/or weekend work may be assigned. General experience with wildlife and vegetation species from the geographic area of work:California Central Valley and San Francisco Bay Area. Qualified candidates must have experience surveying and monitoring CA nesting birds. Preference given to candidates with direct experience surveying, handling, and monitoring for, or with monitoring approvals by state and federal agencies for one or more of the following species:San Joaquin kit fox, California tiger salamander, California red-legged frog, northwestern pond turtle, San Francisco garter snake, giant garter snake, California black rail, western burrowing owl, western spadefoot, vernal pool brachiopods, Swainson's hawk and/or other nesting birds, Crotch's bumble bee, and bats. You enjoy fieldwork and can walk long distances carrying a backpack; andare able to lift at least 50 pounds. You are confident working outside, in remote and rural settings, as well as in urban environments. Physical outdoor work may include, but may not be limited to, work in all types of weather, traversing uneven ground and sometimes steep terrain in vegetated environments, agricultural fields, arid lands, and along stream banks. You may be exposed to inclement weather and uncomfortable working conditions. Some early morning, late night and/or weekend work, as well as long hours may be required What You Will Do for ESA Perform biological compliance monitoring and reporting at active construction sites to ensure conformance with environmental/permit requirements Conduct special-status species surveys and nesting bird surveys Identify and may relocate sensitive species, when needed and if agency-approved Effectively communicate with senior ESA staff, construction crews, project personnel, and project management staff Take initiative and contribute to a respectful, feedback-driven team culture Maintain daily written monitoring and inspection logs, including utilizing electronic data collection tools, such as Fulcrum and Trello Enter data into an on-line GIS mapping application, such as Fieldmaps, Collector, Survey 123 Deliver worker environmental awareness training to on-site staff Must possess a valid driver's license and have own transportation to project sites Must have a smart phone with sufficient data plan to collect necessary data on-site Comply with all safety requirements and policies Able to lift up to 40 pounds Confident in working outside, potentially in remote or rural settings, as well as in urban environments. Other ad hoc tasks as needed What's Special About Our Biology Team OurBiologyTeam includes biologists, restoration ecologists, permitting specialists, conservation biologists, and environmental scientists that provide expertise for many municipalities throughout California. Our work matters because it helps communities shape a positive future for their citizens in balance with conserving our state's sensitive natural resources. We value creative thinking, teamwork, and multi-disciplinary and cross-disciplinary engagement and integration. We encourage you to read about some of the excitingprojectswe have recently completed. What's Special About ESA Joining ESA means becoming part of a close-knit team of environmental professionals who contribute to outstanding projects, improve environmental stewardship, and advance a more sustainable and resilient future for our communities and wild places. You are eligible to participate in ESA's sick leave program. You may be eligible to participate in our employee stock ownership program and tax deferred 401(k) plan if you meet the eligibility requirements for these plans. ESA has established multiple pay ranges tailored to the economic factors in the geographies in which ESA staff reside. For this position, the range is approximately as listed based on our anticipated hiring locations as noted in the above job details. Actual compensation is determined by several factors including but not limited to an individual's related experience, education, skills, and the city in which the applicant lives. CA Pay Transparency Clause $24.34 — $38.56 USD Who We Are We are a 100% employee-owned environmental consulting firm who values diversity and inclusion and celebrate the differences that make each of us unique. Our culture is built on mutual respect, recognizing that our variety of backgrounds, experiences, and perspectives leads to better solutions, which fosters our continued success for our employee-owners and clients. In accordance with ESA's duty and responsibility to provide and maintain a safe workplace that is free of known hazards and to minimize the exposure to potential hazards, any employee who works from an ESA office or conducts any other in-person ESA work-related activity is required to submit their proof of vaccination status or have received an approved exemption and accommodation in states which this applies. If you are an applicant with a disability that requires a reasonable accommodation to complete any part of the application process or are limited in the ability-or unable to use-the online application system and need an alternative method for applying, you may contact our Human Resources Department via email:humanresources@esassoc.comfor assistance. Please include the following in your message so we can promptly address your request: Full name The best method to contact you (phone number and/or email address) Title of Job Position Applied Description of your accommodation request ESA is an Equal Opportunity Employer, committed to a diverse and inclusive work environment. (EOEM/V/F/D)