Senior Hydrogeologist / Project Manager

Hazen is seeking a Senior Hydrogeologist with deep Northern California experience to play a key role in advancing our growing groundwater practice. This position is ideal for a seasoned professional who combines strong technical expertise with a passion for mentoring teams, building client relationships, and shaping the strategic growth of a regional practice. 

In this role, you will lead and manage complex groundwater supply, remediation, and restoration projects that directly support sustainable water resources across California and beyond. You will serve as both a technical authority and trusted advisor to public and private sector clients, guiding project strategy, solving challenging hydrogeologic problems, and delivering high quality, defensible solutions. 

Beyond project leadership, you will help grow the practice by mentoring staff, strengthening client partnerships, and supporting business development efforts throughout Northern California, the West Region, and nationally. This role offers the opportunity to maintain meaningful hands-on technical involvement while expanding your influence in leadership, client strategy, and market growth. 

The successful candidate will thrive in a collaborative environment and enjoy balancing technical excellence, team leadership, and business development to make a lasting impact on groundwater management and restoration initiatives.

Why Hazen and Sawyer: 

• Founded in 1951 by the son of Allen Hazen (developer of the Hazen-Williams equation), we are an employee-owned company with a singular focus on "all things water." 
• Our work includes planning, design, and oversight of construction of environmental infrastructure – for water, wastewater, and stormwater management. 
• We foster a work environment low on bureaucracy and high in creativity. 
• We recruit talented professionals, provide them with challenging, interesting, and creative assignments, and furnish them with the tools they need to succeed. 
• We currently have over 2,000 employees in 80+ offices throughout the United States, Latin America, Canada, and the UK. 
• A flexible hybrid work schedule supports today's busy professionals.

Key Responsibilities: 

• Lead and manage hydrogeologic investigations, recharge, and water supply projects across Northern California and the U.S.
• Serve as Technical Lead or Project Manager for groundwater projects including production, monitoring, injection well programs, groundwater analysis, modeling, aquifer testing, and hydrogeologic interpretation. 
• Oversee well siting, design, drilling, testing, and well construction projects. 
• Develop and maintain relationships and support business development activities internally and with external clients. 
• Contribute to proposal development including scope definition, cost estimating, and technical approaches. 
• Mentor junior and mid-level staff and provide technical review of deliverables. 
• Interface with regulatory agencies (e.g., RWQCB, DDW, EPA, GSAs)

Required Qualifications: 

• BS or MS in Hydrogeology, Geology, Geological Engineering, or a related field. 
• 10+ years of professional hydrogeology experience, with significant Northern California project experience. 
• Demonstrated experience with: 
  • Production, monitoring, and/or injection well design and construction. 
  • Aquifer testing. o Groundwater data analysis and/or modeling. 
  • Regulatory permitting compliance and agency coordination Northern California 
• Proven ability to support or lead business development efforts and client engagement. 
• California PG required. 
• Strong leadership, communication, and project management skills. 
• Proven ability to support or lead business development efforts and client engagement. 
• Experience working with municipal, utility, industrial, and private-sector clients 
• Professional Geologist (PG) license

Preferred Qualifications: 

• CHG and/or other applicable licensures

What We Offer: 

• Comprehensive health benefits (medical, dental, vision, and prescription plans)
• Pre-tax flexible spending plans for medical, dependent care, and transportation 
• Short and long-term disability, and employer paid life insurance 
• Paid holidays, floating holidays, and paid time off (PTO) 
• Employer-contributed 401(k) plan and additional financial planning support 
• Professional growth opportunities, including tuition reimbursement, in-house training, and incentives for professional registration and professional organization memberships 
• Starting pay range for this position depends on skills, experience, education and geographical location