Seeking an experienced Sr. Staff Environmental Geologist/Engineer in Irvine, CA, with a B.S. in Environmental Engineering, Geology, or related field and 3+ years of consulting experience. Must have knowledge of environmental assessment and remediation regulations, valid driver’s license, and OSHA HAZWOPER 40-hour certification. Responsibilities include preparing environmental assessments, supervising field investigations, managing projects and subcontractors, interpreting data, and ensuring QA/QC. Preferred candidates have a Master’s degree. Strong communication, technical skills, attention to detail, and safety adherence are essential. Travel up to 20% required. Salary depends on experience; this is a non-exempt role.