57 Best Science Jobs in Costa Mesa, California (July 2026)

Mid-Senior Geologist

21 days ago

Irvine

Job Description Mid-Senior Geologist (PG/ CEG/ CHG) We currently seek a Mid to Senior Level Geologist/Hydrogeologist on a direct hire basis within our client’s environmental engineering and science consulting firm. The ideal candidate will possess 5 to 10 years of relevant experience and hold professional registration in California as a Geologist (PG) or Certified Engineering Geologist (CEG) or Hydrogeologist (CHG). This individual will manage a diverse range of environmental projects, spanning from small to regional in size. This position is based out of Irvine, California. Job Duties: • Managing small to regional multi-disciplined projects, • Developing and implementing technical approaches for completing site characterization activities, • Preparing written proposals, managing project budgets, and communicating with project managers, • Providing technical training and support to associate-level staff to ensure field tasks are completed with precision and consistency, • Disposition of non-conforming products as per engineering training matrix. Qualifications: • 5 to 10 years of related work experience, • Master's degree or higher in Geology, Geologic Engineering, or similar (preferred), • Professional registration in California as a Geologist (PG) or Certified Engineering Geologist (CEG) or Hydrogeologist (CHG), • Experience with completing fieldwork and managing projects under the direction of local or state regulators, • Familiarity with regulators including but not limited to waste characterization/disposal, DWR CA Well Standards, RCRA, CERCLA (is a plus), • Experience overseeing complex environmental drilling programs and sampling environmental media during preliminary investigations and subsequent investigations necessary for lateral and/or vertical delineation, • Extensive field experience with overseeing the installation of large diameter water supply wells, injection wells, extraction wells, and performing and managing aquifer step drawdown and constant rate aquifer tests following well installation, • Hands-on experience with using a variety of discrete-depth sampling tooling during drilling (i.e., Hydropunch, SimulProbe, installation of temporary wells), • Experience with many of the following drilling methods: roto-sonic, direct mud rotary, flooded reverse, ARCH, hollow stem auger, and direct push, • Evaluating downhole geophysical logs in conjunction with borehole logs, driller logs/observations, and sieve results, to develop and/or collaborate with teams of geologists or regulators in conjunction with well design, • Ability to multi-task in a fast-paced environment both in the field and in the office, • Must have excellent written and verbal communication skills, • 40-hour OSHA HAZWOPER certification, • Valid driver's license and clean driving record, • Ability to travel and willing to perform fieldwork To be Considered Candidates: Must be authorized to work in the USA without sponsorship* Employment Type: Direct Hire Location of Position: Irvine, CA Location Type: On-site TRS Staffing Solutions is an Equal Opportunity Employer that recognizes the value of a diverse workforce. Employment decisions are based on job related criteria and not on the basis of any unlawful criteria. We ensure equal access to employment opportunities, services, and programs. *Must have legal right to work in the United States. We thank all applicants for their interest; however, only those selected for interviews will be contacted.

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