Data Scientist 3
Company: Pacific Northwest National Laboratory
Locations: Richland County, Ohio, United States; United States
Salary: $140.2K – $228.8K a year
Work arrangement: Remote possible
Employment type: Full-time
Experience: 5-10 years
Education: bachelor degree, postgraduate degree
Posted: 2026-10-28
Responsibilities
The scientist will lead and contribute to projects modeling subsurface reactive multiphase flow for applications such as carbon storage and geothermal energy. They will also develop simulation capabilities and collaborate with multidisciplinary teams in geophysics, geochemistry, and environmental engineering.
Requirements
Candidates must hold a BS, MS, or PhD in a relevant field with several years of experience in subsurface fate and transport modeling. The role requires U.S. citizenship and the ability to obtain and maintain a federal security clearance.
Skills
- PFLOTRAN
- Subsurface modeling
- Reactive transport
- Multiphase flow
- Fortran
- Python
- PETSc
- High performance computing
- Geophysics
- Geochemistry
- Environmental engineering
- Data quality
- Scientific writing
- Proposal development
- Mentoring
- Project leadership
Benefits
- Health insurance
- Dental insurance
- Vision insurance
- Telehealth care
- Mental health benefits
- Wellness coaching
- Health savings account
- Flexible spending accounts
- Basic life insurance
- Disability insurance
- Employee assistance program
- Business travel insurance
- Tuition assistance
- Relocation
- Backup childcare
- Legal benefits
- Supplemental parental bonding leave
- Surrogacy and adoption assistance
- Fertility support
- Pension plan
- 401(k) savings plan
About this role
Overview
At PNNL, our core capabilities are divided among major departments that we refer to as Directorates within the Lab, focused on a specific area of scientific research or other function, with its own leadership team and dedicated budget.
Our Science & Technology directorates include National Security, Earth and Biological Sciences, Physical and Computational Sciences, and Energy and Environment. In addition, we have an Environmental Molecular Sciences Laboratory, a Department of Energy, Office of Science user facility housed on the PNNL campus.
The Energy and Environment Directorate delivers science and technology solutions for the nation’s biggest energy and environmental challenges. Our more than 1,700 staff support the Department of Energy (DOE), delivering on key DOE mission areas including: modernizing our nation’s power grid to maintain a reliable, affordable, secure, and resilient electricity delivery infrastructure; research, development, validation, and effective utilization of renewable energy and efficiency technologies that improve the affordability, reliability, resiliency, and security of the American energy system; and resolving complex issues in nuclear science, energy, and environmental management.
The Earth Systems Science Division, part of the Energy and Environment Directorate, provides leadership and solutions that advance Earth system opportunities for energy systems and national security. We are a multidisciplinary division connected by a shared commitment to innovate and collaborate towards solving complex problems in the dynamic Earth system.
Responsibilities
PNNL’s Environmental Subsurface Science Group is seeking a mid-level scientist or engineer with expertise developing PFLOTRAN to lead and contribute to projects modeling subsurface reactive multiphase flow for problem scenarios including geologic carbon storage, geothermal energy production, and environmental remediation. The position requires the ability to lead and support development of simulation capabilities and application of advanced simulation tools to diverse problems. The candidate will lead and work collaboratively with teams in multiple disciplines including geophysics, geochemistry, and environmental engineering.
Qualifications
Minimum Qualifications:
BS/BA and 5+ years of relevant experience -OR-
MS/MA and 3+ years of relevant experience -OR-
PhD with 1+ year of relevant experience
Experience with subsurface fate and transport / reaction transport codes (e.g. STOMP, PFLOTRAN, CRUNCHFLOW).
Preferred Qualifications:
Experience developing subsurface multiphase flow and reactive transport simulation codes.
Experience developing object oriented simulation software using modern Fortran.
Experience modeling carbon sequestration, enhanced geothermal systems, gas hydrates, and
contaminant fate and transport.
Experience developing the PFLOTRAN simulator.
Experience developing software with the PETSc library.
Experience developing simulation software for high performance computers.
Proficiency with modern Fortran and Python.
Experience with analysis and visualization tools (e.g., Matplotlib, Paraview).
Experience with open source software development, distributed version control, and continuous integration.
Candidates should have a demonstrated commitment to data quality and accuracy, strong written and oral communication skills as evidenced by scientific publications and conference presentations, and be able to work independently and in a team setting.
Candidates should have experience with business development, such as proposal development and client engagement.
Candidates should have experience mentoring students, interns, or junior staff.
Candidates should have experience leading small project tasks.
Hazardous Working Conditions/Environment
Not Applicable
Additional Information
This position requires the ability to obtain and maintain a federal security clearance.
A security clearance background investigation includes review of your employment, education, financial, and criminal history, as well as interviews with you and your personal references, neighbors, and co-workers to determine trustworthiness, reliability, and loyalty to the United States. The investigation also examines your foreign connections, drug and alcohol use, foreign influence, and overall conduct.
Requirements:
U.S. Citizenship
Background Investigation: Applicants selected will be subject to a Federal background investigation and must meet eligibility requirements for access to classified matter in accordance with 10 CFR 710, Appendix B.
Drug Testing: All Security Clearance positions are Testing Designated Positions, which means that the applicant selected for hire is subject to pre-employment drug testing, and post-employment random drug testing. In addition, applicants must be able to demonstrate non-use of illegal drugs, including marijuana, for the 12 consecutive months preceding completion of the requisite Questionnaire for National Security Positions (QNSP).
Note: Applicants will be considered ineligible for security clearance processing by the U.S. Department of Energy if non-use of illegal drugs, including marijuana, for 12 months cannot be demonstrated.
Testing Designated Position
This position is a Testing Designated Position (TDP). The candidate selected for this position will be subject to pre-employment and random drug testing for illegal drugs, including marijuana, consistent with the Controlled Substances Act and the PNNL Workplace Substance Abuse Program.
About PNNL
Pacific Northwest National Laboratory (PNNL) is a world-class research institution powered by a highly educated, diverse workforce committed to the values of Integrity, Creativity, Collaboration, Impact, and Courage. Every year, scores of dynamic, driven people come to PNNL to work with renowned researchers on meaningful science, innovations and outcomes for the U.S. Department of Energy and other sponsors; here is your chance to ...
About Pacific Northwest National Laboratory
Research Services · 5,001-10,000 employees · headquartered in Richland, WA