Demo

Senior Geologist

Triad Engineering
Sterling, VA Full Time
POSTED ON 10/17/2026
AVAILABLE BEFORE 10/16/2031

Triad Engineering, Inc. has an immediate need for a Senior Geologist in our Sterling, VA office.

Excellent compensation and benefits package including

  • Medical, dental, vision insurance
  • 401(k) plan
  • Paid holidays
  • Life, Short- and Long-term disability insurance with company-paid premiums
  • Employee Stock Ownership Plan (ESOP)
  • Employee Assistance Program
  • Wellness Program
  • Company supported Professional Development
  • Personal Protective Equipment provided
  • Career Advancement

Position Summary

The Senior Environmental Geologist provides technical leadership and project management for environmental assessments, subsurface investigations, groundwater monitoring, and remediation projects. The position includes preparing proposals and reports, managing budgets and schedules, coordinating with regulatory agencies, maintaining client relationships, and mentoring staff.

 

Education

  • Bachelor's degree in geology, geological sciences, hydrogeology, or a closely related discipline.
  • Master's degree in a related field preferred.

 

Experience

  • Minimum of 8 years of progressively responsible experience in environmental consulting, including site assessments, soil and groundwater investigations, and remediation.
  • At least 3 years of experience managing projects, budgets, subcontractors, and client relationships.
  • Experience with environmental projects in Virginia and coordination with the Virginia Department of Environmental Quality preferred.
  • Experience with the Virginia Petroleum Storage Tank Fund (VPSTF)
  • Experience with petroleum facilities, commercial and industrial properties, and property redevelopment desirable.

 

Professional Credentials

  • Virginia Certified Professional Geologist credential, or ability to obtain certification, preferred.
  • OSHA 40-hour HAZWOPER training and current refresher training preferred; required before applicable field assignments.
  • Valid driver's license and ability to travel to project sites.

 

Primary Job Duties

  • Prepare and review Phase I and Phase II Environmental Site Assessments.
  • Develop scopes of work, sampling and analysis plans, proposals, cost estimates, and project schedules.
  • Plan and oversee soil borings, monitoring well installations, and soil, groundwater, surface water, sediment, and soil gas sampling.
  • Interpret geological and hydrogeological conditions and evaluate contaminant sources, distribution, and migration.
  • Review laboratory analytical results, assess data quality, and compare findings with applicable project criteria.
  • Develop conceptual site models and recommend additional investigation, monitoring, or remediation.
  • Prepare and review technical reports, soil management plans, remedial action plans, and groundwater monitoring reports.
  • Coordinate with regulatory agencies and assist clients in addressing environmental requirements.
  • Manage project budgets, schedules, subcontractors, invoicing, and deliverables.
  • Provide technical review and quality assurance for work prepared by junior staff.
  • Supervise and mentor geologists, environmental scientists, and field technicians.
  • Oversee implementation of project health and safety procedures.
  • Maintain client relationships, communicate findings and recommendations, and support business development.

 

Knowledge and Skills

  • Strong understanding of geology, hydrogeology, contaminant transport, and environmental investigation methods.
  • Familiarity with applicable ASTM standards and Virginia environmental programs.
  • Strong technical writing, data interpretation, organizational, and communication skills.
  • Ability to manage multiple projects and exercise independent professional judgment.
  • Proficiency with Microsoft Office and experience with GIS, environmental databases, or related technical software.

 

Work Environment

Work includes office/home and field assignments, local travel, and occasional overnight stays. Field assignments may involve uneven terrain, outdoor weather conditions, and work around drilling and construction equipment.

 

Position Summary

The Senior Environmental Scientist provides technical leadership and project management for environmental assessments, investigations, regulatory compliance, and remediation projects. The position includes preparing proposals and reports, managing budgets and schedules, coordinating with regulatory agencies, maintaining client relationships, and mentoring staff.

 

Education

  • Bachelor's degree in environmental science, environmental studies, biology, chemistry, natural resources, or a closely related discipline.
  • Master's degree in a related field preferred.

 

Experience

  • Minimum of 8 years of progressively responsible experience in environmental consulting, including environmental assessments, site investigations, regulatory compliance, or remediation.
  • At least 3 years of experience managing projects, budgets, subcontractors, and client relationships.
  • Experience with environmental projects in Virginia and coordination with the Virginia Department of Environmental Quality preferred.
  • Experience with commercial and industrial properties, petroleum facilities, and property redevelopment desirable.

 

Professional Credentials

  • Relevant professional certifications, such as Certified Hazardous Materials Manager or Certified Environmental Professional, preferred.
  • OSHA 40-hour HAZWOPER training and current refresher training preferred; required before applicable field assignments.
  • Valid driver's license and ability to travel to project sites.

 

Primary Job Duties

  • Prepare and review Phase I and Phase II Environmental Site Assessments.
  • Develop scopes of work, sampling and analysis plans, proposals, cost estimates, and project schedules.
  • Plan and oversee soil, groundwater, surface water, sediment, and soil gas sampling.
  • Evaluate site conditions, historical operations, potential contaminant sources, and environmental exposure pathways.
  • Review laboratory analytical results, assess data quality, and compare findings with applicable project criteria.
  • Develop conceptual site models and recommend additional investigation, monitoring, or remediation.
  • Prepare and review technical reports, soil management plans, environmental compliance plans, and monitoring reports.
  • Evaluate remedial alternatives and oversee implementation of cleanup and site management activities.
  • Conduct environmental compliance assessments and assist clients with permitting, waste management, spill prevention, and corrective actions.
  • Coordinate with regulatory agencies and assist clients in addressing environmental requirements.
  • Manage project budgets, schedules, subcontractors, invoicing, and deliverables.
  • Provide technical review and quality assurance for work prepared by junior staff.
  • Supervise and mentor environmental scientists and field technicians.
  • Oversee implementation of project health and safety procedures.
  • Maintain client relationships, communicate findings and recommendations, and support business development.

 

Knowledge and Skills

  • Strong understanding of environmental assessment methods, contaminant behavior, sampling procedures, and environmental compliance.
  • Familiarity with applicable ASTM standards and Virginia environmental programs.
  • Working knowledge of soil and groundwater remediation, waste characterization, and environmental risk assessment principles.
  • Strong technical writing, data interpretation, organizational, and communication skills.
  • Ability to manage multiple projects and exercise independent professional judgment.
  • Proficiency with technical writing software and experience with GIS, environmental databases, or related technical software.

 

Work Environment

Work includes office/home and field assignments, regional travel, and occasional overnight stays. Field assignments may involve uneven terrain, outdoor weather conditions, and work around drilling and construction equipment. Candidates must be able to perform essential job functions, with reasonable accommodation.

Salary : $90,000 - $110,000

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