Job Title: Senior Environmental Engineer (Engineer IV)
Location: Conshohocken, PA

Description/Job Summary

POSITION DESCRIPTION

HGL (HydroGeoLogic, Inc.) currently has a position open for an experienced Senior Environmental Engineer supporting our Philadelphia, PA office in Conshohocken. The Senior Environmental Engineer (Engineer IV) will provide environmental engineering, remediation, and construction services to the U.S. Environmental Protection Agency, U.S. Air Force, U.S. Army Corps of Engineers, U.S. Department of Defense, U.S. Department of Energy, and other federal and state government clients throughout the eastern United States.

As an Senior Environmental Engineer, you will work with our high performing HGL Team and be responsible for supporting HGL’s portfolio of environmental remediation projects for various agencies across the United States and territories. Initial duties will include providing remedial investigation and design support as well as oversight of remedial action (RA) projects. You will also take increasing ownership of project scope, budgets, schedules, client coordination, and multidisciplinary teams, with opportunities to advance into project management. Projects may include in situ thermal treatment, remediation, demolition, mine-waste cleanup, landfill cap construction, contaminated sediment removals, and groundwater treatment (both in-situ and pump-and-treat) and stabilization projects.

Responsibilities/Duties

WHAT YOU'LL BE DOING

The person hired for this role will be responsible for:

Developing and providing technical review of engineering studies, plans, designs, and specifications for environmental investigation and remediation.
Interfacing with program and project managers, senior technical staff, the government customer, and RA Contractors.
Developing technical skills for long-term growth and development.
Managing characterization and remediation projects for Federal clients. Manage project financials, scope, schedule, and deliverables in anticipated transition to the Project Manager role.
Mentor junior and mid-level staff that include engineers, geologists and scientists.
Direct, manage, and lead project teams to meet project objectives in-line with corporate and client expectations.
Communicate effectively with clients, regulators, project team members, and leadership.
Overseeing and assisting with preparation of project deliverables including remediation work plans UFP-QAPPs, FSPs, RI/FS Reports, SSHP/HASPs, technical memoranda and remedial design documents.
Developing alternatives evaluation and design supporting environmental remediation activities, including soil excavation, in situ treatment, air sparging, and waste management.
Preparing design calculations, data collection and analysis, conceptual site model development, specifications, and cost estimates.
Utilizing approved digital and AI-assisted tools, where appropriate, to support technical documentation, data analysis, project communications, and workflow efficiency.
Providing technical support during investigation, planning, design, implementation, and completion (as-built) project phases.

Minimum Requirements

WHAT YOU NEED TO BE SUCCESSFUL

The ideal candidate will need the following as a foundation for success in this role:

Minimum of 10 years’ experience in the environmental engineering field, or an equivalent combination of relevant education and experience.
Bachelor’s degree in an engineering field related to Environmental Studies such as: Civil Engineering, Environmental Engineering, or Chemical Engineering fields.
Direct experience with contaminated-site investigation, remedial design, and remedial-action oversight is required.
Strong writing skills with prior experience contributing to the preparation of technical reports, memoranda, and work plans.
Coordination of field subcontractors for environmental investigation and/or remediation activities. Knowledge and experience on a CERCLA, DoD, DOE, EPA, or RCRA project/site.
Engineer-in-Training Certification required before start date.
Possess OSHA HAZWOPER certification
Demonstrated ability to learn and adopt new technologies and digital tools to improve project delivery and operational efficiency.
Ability to execute multiple projects and tasks concurrently, while adhering to cost and schedule

Desired Qualifications

WHAT YOU NEED TO STAND OUT – Preferred, not required

Experience working on state and U.S. federal contracts.
Experience with remediation of various contaminants of concern including volatile and semi-volatile organic compounds, heavy metals, and PFAS investigation and remediation experience.
Experience with multiple remedial technologies - evaluation and design.
Preparation of engineering technical specifications.
M.S. degree in engineering with a focus in Environmental Studies or related field is a plus.
Professional License in field of study with an environmental focus or ability to obtain PE within 18-24 months of employment.
Project Management Professional Certification (PMP)
Experience using generative AI tools (e.g., Microsoft Copilot, ChatGPT, Claude, or similar) to improve technical writing, data analysis, research, visualization, or project delivery efficiency.

Physical & Environmental Requirements

PHYSICAL & COGNITIVE REQUIRMENTS

Prolonged sitting up to 70% of the time
Repetitive hand motions (typing, tool use, etc.)
Ability to see details at close range
Ability to see details at a distance
Viewing computer screen for extended periods
Ability to interpret and analyze visual data (maps, graphs, warning indicators, etc.)
Driving a company or personal vehicle
Analyzing and synthesizing data
Complex problem solving and decision making
Reading and interpreting technical documents or regulations
Writing reports, proposals, or technical documentation
Leading a team or coordinating multiple priorities
Communicating effectively with clients, team members, and stakeholders
Managing competing deadlines and shifting priorities

WORK ENVIRONMENT REQUIREMENTS

Must be able to travel up to 25% per year
Office work environment

This description is not a comprehensive listing of activities, duties or responsibilities that may be required of the employee. Other duties, responsibilities and activities may be assigned or may be changed at any time with or without notice.

Details

Work Schedule: HGL office work is dictated by a 5-day work week; however, fieldwork schedules will deviate based on job requirements and may require longer hours and weekends.

Office Type: Hybrid working three days per week in-office in Philadelphia, PA and two days remote.

Travel: 25%

A favorable pre-hire drug test is required.

All positions are subject to a pre-hire education and driving record verification.

MORE ABOUT HGL AND THE OPPORTUNITY

At HGL, we share a drive and vision to restore natural resources and provide ongoing stewardship of our environment to benefit present and future generations. We believe that we can make a difference in improving the world we live in through collaboration, teamwork, and a positive work environment. This unites and empowers us to strive for excellence in all our endeavors.

HGL - WHO WE ARE

The exceptional quality of our people is key to our strength. We value our employees as individuals and as important members of our team. We offer a work environment that is flexible, inclusive, and dedicated to creating a sustainable future. By cultivating a culture of innovation, we’re able to adapt and augment our services to solve complex environmental and natural resources challenges.

Projects at HGL primarily span the United States and its territories, tackling problems associated with emerging contaminants (like PFAS), radiological contamination, and military munitions, along with chemical contamination in groundwater, surface water, sediments, and soil.

With over 550 employees, HGL is large enough to execute high-profile projects, but small enough to develop personal working environments with our talented team members. By joining HGL, you will be working toward restoring the environment and protecting our future.

HGL - WE INVEST IN YOU

It’s not just a job, it’s your career. HGL provides career growth opportunities via mentoring, training, education, and support for your certifications and licenses. Achieve your career goals and help HGL achieve its mission of restoring the environment to beneficial use for our clients and communities.

We are an Equal Opportunity employer. All applicants will receive consideration for employment without regard to race, color, religion, sex, age, national origin, disability, protected veteran status, or other protected category. Some positions may require U.S. citizenship. Applicants who wish to request a reasonable accommodation during the recruitment process should contact Human Resources directly at 703-478-5186.

EEO notices: US Equal Opportunity Employment Poster, US Equal Opportunity Supplemental Poster, Know Your Rights, and Pay Transparency Notice.

A full list of benefits is available at www.hgl.com/careers/.

Digital & AI Proficiency: HGL encourages the responsible use of approved AI-enabled and digital technologies to improve productivity, technical quality, decision-making, and project delivery. Candidates who demonstrate curiosity, adaptability, and experience leveraging emerging technologies are highly valued.

The annual salary for this position ranges from $103,142 - $159,870 This position's final salary can be impacted by various factors including, but not limited to, contractual requirements, geographic location, job-related education, training, experience, and skills. If your desired salary falls outside of this range, we hope you'll still apply as there may be other positions that better align.

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Senior Environmental Engineer (Engineer IV)