Senior Hydrogeologist – Groundwater Modeling Team Leader

True Environmental

. Lead and manage technical aspects of groundwater flow and solute transport modeling projects, including CSM development, model design, construction, calibration, application of numerical models, and sensitivity and uncertainty analyses .

Posted 9/24/2026full-timePhoenix • Arizona • United StatesSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive expertise in groundwater modeling, hydrogeology, and environmental compliance, with a strong focus on project management and technical leadership. Proficient in utilizing advanced modeling tools and methodologies to support groundwater resource management and regulatory requirements.

Highest-signal resume keywords

Groundwater ModelingProject ManagementMODFLOW ProficiencyTechnical WritingSenior Leadership Experience

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Groundwater Flow ModelingSolute Transport ModelingData AnalysisCost EstimatingPython Script DevelopmentGeologic Data InterpretationHydrogeologic CharacterizationModel CalibrationSensitivity AnalysisUncertainty Analysis

Soft Skills

Strong CommunicationTeam LeadershipMentoringClient InterfaceDynamic Project Management

Tools & Technologies

MODFLOWMT3DFEFLOWGroundwater VistasArcGIS ProPESTPilot Point Parameterization Software

Certifications & Qualifications

Registered Geologist in ArizonaBachelor's Degree in GeologyBachelor's Degree in HydrogeologyBachelor's Degree in Environmental Science

Industry Keywords

Groundwater ResourcesEnvironmental ConsultingRegulatory ComplianceArizona Regulatory StandardsHydrology StudiesRemedial InvestigationsFeasibility StudiesWater Quality StudiesADWR PermittingMining Permitting

Tech Stack

Tools & technologies

AWSPython

About the role

Key responsibilities & impact

Lead and manage technical aspects of groundwater flow and solute transport modeling projects, including CSM development, model design, construction, calibration, application of numerical models, and sensitivity and uncertainty analyses
Lead and manage groundwater resources and environmental consulting activities, including data acquisition, data analysis, permitting support, and report preparation
Assist with or manage multiple projects, including cost estimating, proposal preparation, budget tracking, and invoicing
Assist with or manage day-to-day operations of the groundwater modeling team and ensure timely, high-quality delivery
Serve as the primary internal contact for project execution
Interface with clients as Project Manager and Senior Hydrogeologist
Conduct groundwater resources and hydrology studies supporting ADWR permitting programs, including AWS determinations, Well Spacing–Well Impact studies, and USF applications
Conduct remedial investigations and feasibility studies, including water quality studies supporting ADEQ permitting programs such as APP and AZPDES applications
Perform hydrogeologic characterization supporting MAR sites and ASR wells, including aquifer impact analyses
Serve as primary modeling liaison with clients, stakeholders, and federal and state regulators
Attend meetings to discuss technical findings and project permitting requirements
Mentor, supervise, and train junior groundwater modelers and hydrogeologists

Requirements

What you’ll need

Bachelor's degree in Geology, Hydrogeology, or Environmental Science
10 years in groundwater modeling, hydrogeology, water resources, and/or engineering/environmental remediation sectors
Proficiency in MODFLOW, MT3D, FEFLOW, and Groundwater Vistas
Proficiency in Geographic Information Systems (ArcGIS Pro)
Python script development proficiency
Extensive groundwater modeling experience and familiarity with groundwater challenges and regulations in Arizona and the arid Southwestern United States
Experience with Arizona regulatory standards and guidelines for groundwater modeling
Experience developing and applying groundwater flow and transport models for environmental compliance, hydrogeologic evaluation, decision making, and litigation support
At least 2 years of senior leadership experience
Project management experience in groundwater resources or environmental consulting projects
Proposal writing and cost estimating skills
Very proficient technical writing skills
Ability to work on multiple projects in a dynamic, fast-paced, team-oriented environment
Familiarity with parameter estimation tools such as PEST and pilot point parameterization software (preferred)
Experience interpreting geologic, hydrogeologic, and analytical data to develop and use conceptual hydrogeologic and predictive computer models (preferred)
Familiarity and experience with APP, AZPDES, and USF modeling requirements; PCCZ demonstrations are a plus
Registered Geologist in Arizona or another state preferred; ability to obtain Arizona registration within 12 months if not already licensed
Experience supporting mining permitting and compliance (preferred)
Advanced proficiency working with large model datasets using script development, text editors, spreadsheets, and supporting computer programs (preferred)
Strong communication, information technology, and data management skills (preferred)

Benefits

Comp & perks

Full-time employment
Equal employment opportunity consideration without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or protected veteran status