The Position
Terraphase is seeking a part time Senior Hydrogeologist to support and lead water resources and hydrogeologic investigations. This role is intended to provide senior level technical expertise, mentoring, and project support, with a focus on groundwater supply development, aquifer testing, modeling, and regulatory coordination. The position is well suited for an experienced professional seeking a flexible schedule while remaining engaged in meaningful technical work.
The Role
• Provide senior level technical leadership on groundwater and water supply projects
• Design and review groundwater supply investigations and aquifer testing programs
• Support groundwater flow modeling efforts including MODFLOW • Provide technical oversight of drilling programs in unconsolidated and bedrock formations
• Support water allocation permitting and regulatory coordination • Review hydrogeologic data and technical reports
• Provide mentoring and technical guidance to staff
• Support proposal development and client communication as needed
Who You Are
• Bachelor's degree in Geology, Hydrogeology, or related field
• Advanced degree preferred
• Professional Geologist license or equivalent
• Minimum 10 years of hydrogeology and groundwater experience
• Strong background in water supply development and aquifer testing
• Experience with groundwater modeling and interpretation
• Ability to work independently and provide senior level judgment
• Strong communication and collaboration skills
Preferred Experience
• Municipal and industrial water supply projects
• Aquifer Storage and Recovery projects
• PFAS and groundwater quality evaluations
• Regulatory permitting and agency coordination
• Technical mentoring and training