Refine Search Clear All

Career Areas

Experience Level

Employment Type



Security Clearance

Keyword Search

Back to open positions

Biogeochemistry - Postdoctoral Researcher

Entry Level | Full-time
Physical Life Sciences | livermore, CA | 03/03/2021

Apply Now  

Company Description

Join us and make YOUR mark on the World!

Are you interested in joining some of the brightest talent in the world to strengthen the United States’ security? Come join Lawrence Livermore National Laboratory (LLNL) where our employees apply their expertise to create solutions for BIG ideas that make our world a better place.

We are looking for individuals that demonstrate an understanding of working in partnership with team peers, who engage, advocate, and contribute to building an inclusive culture, and provide expertise to solve challenging problems.

Job Description

We have an opening for a Biogeochemistry Postdoctoral Researcher to develop and pursue innovative research in the analysis of reaction chemistry and thermodynamics at mineral-water interfaces. You will develop data mining, database development, machine learning, and traditional surface complexation modeling approaches for applications ranging from nuclear waste repository performance assessment to watershed and ecosystem water quality prediction. You will join an interdisciplinary team focused on development process-level understanding of radionuclide and metal biogeochemistry across a number of field research sites. This position is in Environmental Isotopic Signatures group of the Nuclear and Chemical Sciences Division. 

In this role you will 

  • Develop and pursue innovative research addressing advanced mineral-water interface biogeochemical modeling.
  • Develop optimization approaches to model sets of geochemical data using a state of the art machine learning and parameter estimation tools
  • Design and implement extrapolation methods to expand mineral-water interface geochemistry across a wide range of elements that span the periodic table.
  • Assist in development of conceptual and numerical approaches to integrating thermodynamics and surface complexation modeling in reactive transport models.
  • Document and publish research results in peer-reviewed scientific journals and present results at international conferences, present seminars and/or presentations at technical meetings.
  • Collaborate with other scientists and technical personnel to accomplish research goals.
  • Perform other duties as assigned.


  • PhD in Earth Sciences, Chemistry, Nuclear Engineering, Geology, or related field.
  • Experience using data science tools to interrogate datasets (e.g. Python, R, Jupyter Notebook, etc.).
  • Experience in thermodynamic and surface complexation modeling and data fitting codes (e.g. GWB, PHREEQC, CRUNCHFLOW, PEST, etc.).
  • Experience working in an interdisciplinary team of environment scientists.
  • Documented publication record in peer-reviewed literature with experience presenting research results to a large audience.
  • Proficient verbal and written communication and interpersonal skills to collaborate effectively in a multidisciplinary team environment and present and explain technical information.

Qualifications We Desire

  •  Experience performing laboratory wet chemistry experiments related to biogeochemistry at interfaces.
  • Experience performing laboratory experiments to quantify biogeochemical processes controlling radionuclide and metal transport behavior
  • Experience working with an interdisciplinary team to develop conceptual and numerical models of reactive transport.

Additional Information

Why Lawrence Livermore National Laboratory?

  • Included in 2020 Best Places to Work by Glassdoor!
  • Work for a premier innovative national Laboratory
  • Comprehensive Benefits Package
  • Flexible schedules (*depending on project needs)
  • Collaborative, creative, inclusive, and fun team environment

Learn more about our company, selection process, position types and security clearances by visiting our Career site

Security Clearance

LLNL is a Department of Energy (DOE) and National Nuclear Security Administration (NNSA) Laboratory.  Most positions will require a DOE L or Q clearance (please reference Security Clearance requirement).  If you are selected, we will initiate a Federal background investigation to determine if you meet eligibility requirements for access to classified information or matter. In addition, all L or Q cleared employees are subject to random drug testing.  An L or Q clearance requires U.S. citizenship.  If you hold multiple citizenships (U.S. and another country), you may be required to renounce your non-U.S. citizenship before a DOE L or Q clearance will be processed/granted.  For additional information please see DOE Order 472.2.

Equal Employment Opportunity

LLNL is an affirmative action and equal opportunity employer that values and hires a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, color, religion, marital status, national origin, ancestry, sex, sexual orientation, gender identity, disability, medical condition, pregnancy, protected veteran status, age, citizenship, or any other characteristic protected by applicable laws.

If you need assistance and/or a reasonable accommodation during the application or the recruiting process, please submit a request via our online form

California Privacy Notice

The California Consumer Privacy Act (CCPA) grants privacy rights to all California residents. The law also entitles job applicants, employees, and non-employee workers to be notified of what personal information LLNL collects and for what purpose. The Employee Privacy Notice can be accessed here.

Apply Now