Hydrogeologist; Field Focused

Join a team that supports scientific excellence, dedication to quality work, and employee commitment to personal life, family, and community.

The fact that many employees have been with us for more than 20 years speaks for itself! The M&A team comprises both seasoned and early‑career professionals, and newer staff benefit from the loyalty, commitment, and mentorship of our experienced staff members. Our work is important and our employees find it rewarding. Everything we do represents M&A, and employees take pride in our earned reputation for quality.

Position: Hydrogeologist

Location: Tucson, AZ

Montgomery & Associates (M&A) is seeking a full-time Project Hydrogeologist to join our team in M&A's Tucson, Arizona, headquarters. Most work will occur in Arizona, with occasional field assignments in southern California or Nevada. This position offers a mix of field and office work—focusing on projects involving water well drilling, lithologic characterization, well construction, sampling, and aquifer testing—with opportunities for growth and developing project management and leadership skills.

We encourage you to apply if you have a strong 3–7 years of hydrogeological site characterization experience, a degree in geology, hydrology, or related field, and experience in well drilling, construction, and testing. Experience with well design and consulting is a plus. We’re looking for a self‑motivated professional with strong time management, organizational, and communication skills. Duties will vary from day to day and week to week, with an expected average of 60% fieldwork and 40% office work.

Some assignments may be in remote areas in Arizona or other western states.

• Logistical planning and supervision of field tasks for hydrogeological characterization studies
• Providing technical guidance on field tasks under direct supervision of a field project manager and working collaboratively as a part of a multi‑disciplinary team
• Responsibility for field operations, which includes preparing and describing drill cutting samples in both basin‑fill and hard rock geologic settings, characterizing hydrogeologic conditions and contacts, and reviewing and interpreting borehole geophysical logs
• Overseeing well installation and well development, which includes inspecting and documenting materials, verifying compliance with technical specifications, and coordinating drilling contractor activities
• Observing and documenting well development, rehabilitation, and pump installation
• Leading various types of aquifer tests and other field investigations with guidance and support
• Measuring water levels, downloading data loggers, and maintaining project‑specific datasets
• Installing, configuring, or modifying instrumentation and telemetry systems related to groundwater and surface water monitoring
• Collecting and documenting water and soil samples and measure water quality parameters
• Following applicable health and safety protocols, regulations policies, and procedures
• Maintaining detailed field notes and communicating daily activities to project managers and clients

• Develop scopes of work, sampling and analysis plans, drilling program technical specifications, and health and safety plans
• Interpret hydrogeologic data including lithologic data with geophysical logs, groundwater and streamflow hydro graphs, aquifer tests, and groundwater chemistry
• Prepare detailed lithologic logs, schematic diagrams, hydro graphs, and map figures
• Prepare water and soil sample documentation and submit samples to laboratories
• Use spreadsheets and graphing software to create data tables and plots to analyze field data
• Process and analyze pumping test data to determine hydraulic parameters and estimate production capacity
• Manage, configure, and modify instrumentation remotely and integrate data to in‑house data management systems
• Prepare data summaries, presentations, and technical reports/memos
• Participate in client meetings/teleconferences to present program results and recommendations

• Strong 3-7 years of work experience in field‑based investigations including overseeing and managing water well drilling,…