Groundwater Modeler

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Montgomery & Associates (M&A) is seeking a full‑time groundwater modeler to support our water agency clients in California. This position will be associated with one of our two largest offices (Oakland or Sacramento) and is a hybrid role, with approximately 50% in the office and 50% remote.

Our team is currently composed of 22 professionals located across five California offices:
Oakland, Sacramento, Monterey, Pasadena, and San Luis Obispo. The role will support projects throughout California, primarily surrounding the Implementation of the California Sustainable Groundwater Management Act. It offers an opportunity to work with an enthusiastic team of water resource scientists and engineers.

• Interpreting lithologic, hydrologic testing, depth‑specific water quality, and borehole geophysical data
• Compiling, processing, and analyzing hydrogeologic data using spreadsheets, databases, GIS, graphing software, and computer programming
• Developing hydrogeologic conceptual models and water budgets
• Developing numerical groundwater flow and transport models
• Conducting pre‑ and post‑processing of model inputs and results of predictive modeling runs and implementing model updates
• Managing groundwater model tasks and activities
• Preparing data summaries, presentations, and technical reports/memos
• Participating in client meetings and teleconferences to present program results and recommendations

• Graduate degree in hydrology, geology, water resources engineering, or a related field; coursework in hydrogeologic data analysis, groundwater modeling, and computer programming
• Two‑to‑five years of professional experience outside academia developing and applying groundwater models
• Proficiency with Microsoft Office, GIS software, and programming (e.g., Python, Scilab, FORTRAN, Octave)
• Experience with MODFLOW (including NWT, USG, OWHM, GSFLOW, MF6) and Groundwater Vistas
• Professional training in quantitative hydrogeology and groundwater modeling
• Understanding of regional hydrogeologic settings and the California Sustainable Groundwater Management Act
• Strong organizational and problem‑solving skills with a commitment to deadlines
• Excellent oral and written communication skills; ability to present technical materials succinctly to teams and clients
• U.S. citizenship or authorization to work in the United States (required)

• Competitive benefits and salary in a growing team‑oriented company
• Performance bonuses
• Dynamic work environment with safety and technical training provided by the company
• Challenging and collaborative multidisciplinary projects
• On‑the‑job mentoring by senior professionals
• Medical, dental, and vision insurance
• Flexible Spending Account;
  Health Reimbursement Account
• Long‑ and short‑term disability
• Life/AD&D insurance
• Vacation, holiday, personal, and sick leave
• Employer matching 401(k) retirement plan

Monthly Base Pay Range: $6,500 – $8,500

Estimated Annualized Compensation Including Bonuses: $87,750 – $114,750

Compensation for qualified extra hours could further increase the estimate above.