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Postdoctoral Research Associate - Environmental Scientist

Oak Ridge National Laboratory
Oak Ridge, TN Full Time
POSTED ON 1/28/2026 CLOSED ON 3/28/2026

What are the responsibilities and job description for the Postdoctoral Research Associate - Environmental Scientist position at Oak Ridge National Laboratory?

Requisition Id15823

Overview:

We are seeking a postdoctoral researcher skilled in biogeochemistry who will contribute to mercury remediation technology development program, specifically focusing on how environmental variables and remediation activities affect mercury bioavailability and bioaccumulation. This position resides in the Biodiversity and Ecosystem Health in the Biodiversity and Sustainable Systems Section, Environmental Sciences Division, Biological & Environmental Systems Science at Oak Ridge National Laboratory (ORNL).

Major Duties/Responsibilities:

  • Design experiments and perform laboratory investigations with inorganic mercury and methylmercury.
  • Acquire and analyze data using a range of analytical instrumentation.
  • Maintain detailed and accurate records.
  • Prepare oral and written reports.
  • Publish and present research results in peer-reviewed journals and at conferences.
  • Deliver ORNL's mission by aligning behaviors, priorities, and interactions with our core values of Impact, Integrity, Teamwork, Safety, and Service. Promote equal opportunity by fostering a respectful workplace - in how we treat one another, work together, and measure success.

Basic Qualifications:

  • Ph.D. in environmental science, environmental chemistry, civil/environmental engineering, biogeochemistry, biology or related discipline.
  • Knowledge and experience in laboratory environment.
  • Ability to articulate a research plan with defined goals and sound experimental design. Prioritize a safe work environment and comply with all ES&H regulations.
  • A proven publication record and ability to produce research to a high publication standard
  • Ability to work independently and collaboratively as part of an interdisciplinary research team.

Preferred Qualifications:

  • The successful candidate will have research experience in aquatic environments, with interest and expertise in one (or a combination) of the following topics: mercury biogeochemical cycling including mercury bioavailability, uptake and transformation; nutrient stoichiometry; and food web/trophic dynamics.
  • Analytical chemistry experience working with trace metals.
  • Experience with working with aquatic organisms.
  • Ability to identify, analyze and summarize relevant literature.
  • Excellent written and oral communication skills.
  • Motivated self-starter with the ability to work independently and to participate creatively in collaborative teams across the laboratory.
  • Ability to function well in a fast-paced research environment, set priorities to accomplish multiple tasks within deadlines, and adapt to ever changing needs.

Special Requirements:

Applicants cannot have received their Ph.D. more than five years prior to the date of application and must complete all degree requirements before starting their appointment. The appointment length will be up to 24 months with the potential for extension. Initial appointments and extensions are subject to performance and availability of funding.

For employment at Oak Ridge National Laboratory (ORNL), a Real ID compliant form of identification will be required. Additionally, ORNL is subject to Department of Energy (DOE) access restrictions. All employees must also be able to obtain and maintain a federal Personal Identity Verification (PIV) card as mandated by Homeland Security Presidential Directive 12 (HSPD-12) and Department of Energy (DOE) Order 473.1A, which requires a favorable post-employment background investigation.

To obtain this credential, new employees must successfully complete and pass a Federal Tier 1 background check investigation. This investigation includes a declaration of illegal drug activities, including use, supply, possession, or manufacture within the last year. This includes marijuana and cannabis derivatives, which are still considered illegal under federal law, regardless of state laws.

For foreign national candidates:

If you have not resided in the U.S. for three consecutive years, you are not eligible for the PIV credential and instead will need to obtain a favorable Local Site Specific Only (LSSO) risk determination to maintain employment. Once you meet the three-year residency requirement, you will be required to obtain a PIV credential to maintain employment.

About ORNL:

As a U.S. Department of Energy (DOE) Office of Science national laboratory, ORNL has an impressive 80-year legacy of addressing the nation's most pressing challenges. Our team is made up of over 7,000 dedicated and innovative individuals! Our goal is to create an environment where a variety of perspectives and backgrounds are valued, ensuring ORNL is known as a top choice for employment. These principles are essential for supporting our broader mission to drive scientific breakthroughs and translate them into solutions for energy, environmental, and security challenges facing the nation.

ORNL offers competitive pay and benefits programs to attract and retain individuals who demonstrate exceptional work behaviors. The laboratory provides a range of employee benefits, including medical and retirement plans and flexible work hours, to support the well-being of you and your family. Employee amenities such as on-site fitness, banking, and cafeteria facilities are also available for added convenience.

Other benefits include the following: Prescription Drug Plan, Dental Plan, Vision Plan, 401(k) Retirement Plan, Contributory Pension Plan, Life Insurance, Disability Benefits, Generous Vacation and Holidays, Parental Leave, Legal Insurance with Identity Theft Protection, Employee Assistance Plan, Flexible Spending Accounts, Health Savings Accounts, Wellness Programs, Educational Assistance, Relocation Assistance, and Employee Discounts.

If you have difficulty using the online application system or need an accommodation to apply due to a disability, please email: ORNLRecruiting@ornl.gov.

This position will remain open for a minimum of 5 days after which it will close when a qualified candidate is identified and/or hired.

We accept Word (.doc, .docx), Adobe (unsecured .pdf), Rich Text Format (.rtf), and HTML (.htm, .html) up to 5MB in size. Resumes from third party vendors will not be accepted; these resumes will be deleted and the candidates submitted will not be considered for employment.

ORNL is an equal opportunity employer. All qualified applicants, including individuals with disabilities and protected veterans, are encouraged to apply. UT-Battelle is an E-Verify employer.

 

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