Groundwater Modeler/Hydrogeologist

HDR; Philadelphia (Philadelphia County); On-site; USD 80,000 - 110,000; Full time

Job summary

HDR is hiring a Groundwater Modeler/Hydrogeologist near Philadelphia to contribute to groundwater and contaminant fate modeling projects. You will work with senior modelers to set up models, analyze datasets, and prepare reports and presentations.

The role requires a Bachelor’s in environmental engineering/science or related field, strong analytical and communication skills, and experience with modeling tools. Local candidates and OSHA-HAZWOPER experience are a plus.

Qualifications

• Bachelor's degree in environmental engineering/science, oceanography or closely related field.
• Strong analytical and problem-solving skills.
• Strong oral and written communication skills.
• Experienced with Microsoft Office Suite.
• Self-motivated, able to work independently and with a project team to completion of task.
• An attitude and commitment to being an active participant of our employee-owned culture is a must.
• Experience with groundwater modeling and data analysis preferred, including modeling programs like MODFLOW/MODPATH.
• OSHA 40 Hour HAZWOPER Certification are a plus.

Responsibilities

• Work under more-senior modelers, using prescribed methods in various data analysis and modeling assignments as part of groundwater and contaminant fate and transport modeling projects.
• Evaluate groundwater movement, contaminant fate and transport, groundwater supplies, and land subsidence due to over withdrawal of groundwater
• Acquire, organize and analyze environmental data
• Set up and execute mathematical models
• Perform quality-control checks on model input and results
• Participate in project meetings, proposal preparation, report writing and presentations
• Develop statistical and graphical comparisons of model results and data
• Perform other duties as needed

Skills

Groundwater modeling

Data analysis

Python

MATLAB

R

Communication skills

Microsoft Office

Education

Bachelor's degree in environmental engineering/science

Master's degree in hydrogeology/environmental engineering

Tools

MODFLOW

MODPATH

MT3DMS

GMS

Groundwater Vistas

Python

MATLAB

R

Job description

At HDR, our employee-owners are fully engaged in creating a welcoming environment where each of us is valued and respected, a place where everyone is empowered to bring their authentic selves and novel ideas to work every day. As we foster a culture of inclusion throughout our company and within our communities, we constantly ask ourselves: What is our impact on the world?

Watch Our Story:' https://www.hdrinc.com/our-story'

Each and every role throughout our organization makes a difference in our ability to change the world for the better. Read further to learn how you could help make great things possible not only in your community, but around the world.

In the role of Groundwater Modeler/Hydrogeologist we'll count on you to:

• Work under more-senior modelers, using prescribed methods in various data analysis and modeling assignments as part of groundwater and contaminant fate and transport modeling projects.
• Evaluate groundwater movement, contaminant fate and transport, groundwater supplies, and land subsidence due to over withdrawal of groundwater
• Acquire, organize and analyze environmental data
• Set up and execute mathematical models
• Perform quality-control checks on model input and results
• Participate in project meetings, proposal preparation, report writing and presentations
• Develop statistical and graphical comparisons of model results and data
• Perform other duties as needed

Preferred Qualifications

• Masters degree in hydrogeology or environmental engineering (with a focus on groundwater modeling or hydrogeologic processes) preferred
• Experience conducting groundwater modeling, working with modeling programs like MODFLOW, MODPATH, MT3DMS and model processing software such as GMS or Groundwater Vistas required, however, would consider strong candidate with a directly relevant
• Masters with required experience in modeling programs and mathematical software with academic related experience in modeling
• Experience with mathematical software such as Python, MatLab and R
• Strong analytical and problem-solving skills including a thorough understanding of hydrogeological processes and principles
• Strong oral and written communication skills
• Experience with Microsoft Office Suite
• Self-motivated, able to work independently and with a project team to completion of task
• Excellent oral and written communication skills
• Candidates who reside locally in the Philadelphia area are preferred
• Previous field experience collecting groundwater data preferred
• OSHA 40 Hour HAZWOPER Certification are a plus

Required Qualifications

• Bachelor's degree in environmental engineering/science, oceanography or closely related field
• Strong analytical and problem-solving skills
• Strong oral and written communication skills
• Experienced with Microsoft Office Suite
• Self-motivated, able to work independently and with a project team to completion of task
• An attitude and commitment to being an active participant of our employee-owned culture is a must

What We Believe

HDR is our company. Together, we build on each other's life experiences and perspectives to make great things possible every day. This shapes our collaborative culture, encourages organizational trust and connects us closer to the clients and communities we serve.

Our Commitment

As employee owners, we all have a role in creating an inclusive environment where each of us is welcomed, valued, respected and empowered to bring our authentic selves to work every day.

Our eight Employee Network Groups (Asian Pacific, Black, Hispanic/Latino(a), LGBTQ+, People with Disabilities, Veterans, Women, Young Professionals) help create a sense of belonging and foster a supportive environment where everyone is empowered to engage and contribute. Each group has an executive sponsor and is open to all employees.

Primary Location: United States-Pennsylvania-Plymouth Meeting Other Locations: United States-Pennsylvania-Philadelphia Industry: Waste Schedule: Full-time Employee Status: Regular BusinessClass: Site Investigation and Remediation Job Posting: Aug 20, 2026

At HDR, we are committed to the principles of employment equity. We are an Aff... (https://www.hdrinc.com/equal-employment-opportunity-employer). We consider all qualified applicants, regardless of criminal histories, arrest and conviction records.