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Principal Environmental Engineer

APTIM
Knoxville, TN Full Time
POSTED ON 4/18/2026
AVAILABLE BEFORE 5/17/2026
Job Overview

APTIM is currently seeking a Principal Environmental Engineer to support the continued nationwide growth of project work within our Government Remediation Business line. The Principal Environmental Engineer will serve as the senior technical authority for environmental engineering tasks across the business line, providing executive leadership and strategic direction in the characterization and remediation of complex environmental projects.

The successful candidate will have a proven track record of engineering experience in addition to the management and development of a team of engineering professionals. Strong organizational and interpersonal skills are a must, including the ability to communicate clearly and confidently, both written and verbally, to all project team members including client representatives and regulatory personnel alike.

In This Role You Will Have The Opportunity To

  • Act as the technical authority across a national remediation portfolio
  • Influence strategy on high-visibility federal programs
  • Opportunity to build and mentor a growing engineering team
  • Work on complex, large-scale remediation challenges

Key Responsibilities/Accountabilities

  • Serve as the senior technical expert and authority for environmental engineering across the Environmental Remediation business line.
  • Lead development of strategic approaches and provide oversight and approval of complex environmental designs, characterization and remediation plans, and compliance strategies during proposal development and in the execution of project work.
  • Advise executive leadership on execution risk, regulatory impacts, and mitigation strategies.
  • Ensure compliance with federal environmental laws and regulations, including CERCLA, RCRA, NEPA, Clean Water Act, and Clean Air Act
  • Manage a team of environmental engineers with varying levels of experience, including project assignments, career development, and performance evaluations.

Basic Qualifications

  • Must be a U.S. citizen or authorized to work on federal contracts.
  • Experience working on federal government remediation projects in a leadership role driving the development of environmental remediation approaches.
  • Minimum of 15 years of progressively responsible environmental engineering experience supporting DoD and CERCLA funded projects.
  • Experience serving as Engineer of Record or senior technical reviewer
  • Possess a current Professional Engineer (PE) license in good standing.
  • Ability to travel to project sites and APTIM offices as required.

About APTIM

APTIM enhances the quality of the environment, wellbeing of people, resilience of communities, and opportunity for employees to make a difference, not just a living. A leading professional solutions firm, we specialize in environmental, sustainability, resilience, and infrastructure solutions. Our team of experts provide these integrated solutions for forward-thinking government agencies, commercial and industrial clients, and energy customers. Together, we create sustainable and resilient communities for all.

What You Can Expect From APTIM

  • Work that is worthy of your time and talent
  • Respect and flexibility to live a full life at work and at home
  • Dogged determination to deliver for our clients and communities
  • A voice in making our company better
  • Investment into your personal and professional development

As of the date of this posting, a good faith estimate of the current pay range for this position is $175,000-$250,000. Compensation depends on several factors including: experience, education, key skills, geographic location of the position, client requirements, external market competitiveness, and internal equity among other employees within APTIM.

Employee Benefits

APTIM Federal Services, LLC is committed to providing an extensive range of benefits that protect and promote the health and financial well-being of our employees and their families through the APTIM Benefits Marketplace https://aptim.makeityoursource.com/.

  • Medical, vision, and dental insurance: Through the marketplace, our employees can choose benefits from five metallic levels and several carriers to find the right benefits that work for them in their location.
  • Company paid and optional Life insurance
  • Short-term and long-term disability insurance
  • Accident, Critical Illness, and Hospital Indemnity coverage
  • Paid holidays, vacation, and sick leave (eligibility based on company policy and applicable law)
  • 401(k) APTIM offers three 401k plans through the Aon Pooled Employer Plan (PEP). The specific plan you are eligible for depends on the business unit you are in. The details of the largest plan are found here:
    • APTIM 401(k) Guide
    • APTIM - Helpful Documents
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About APTIM - In Pursuit of Better

Salary : $175,000 - $250,000

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