Computational Scientist

Lawrence Livermore National Laboratory
Livermore, CA 94550

Join us and make YOUR mark on the World!

Come join Lawrence Livermore National Laboratory (LLNL) where we apply science and technology to make the world a safer place; now one of 2020 Best Places to Work by Glassdoor!

We have multiple openings for Computational Scientists. You will be responsible for creating solutions in new and existing software to meet evolving computational challenges, designing and implementing performance and memory optimizations, writing documentation, and testing. You will work on multidisciplinary teams in an environment that focuses on problems of interest to Lawrence Livermore National Laboratory (LLNL) and Department of Energy (DOE) programs. These positions are in the Computing Directorate.

This position will be filled at either the SES.2 or SES.3 level depending on your qualifications. Additional job responsibilities (outlined below) will be assigned if you are selected at the higher level.

Essential Duties
- Create a range of applications, including scientific, graphical user interface, database, and visualization applications on UNIX platforms.
- Identify and collect requirements, and design and implement software solutions that are maintainable and extensible while following standard methodologies for high performance scientific computing software.
- Maintain and improve existing software - adapting components to meet evolving requirements.
- Provide software development/computer science support to multidisciplinary teams and end-users.
- Take ownership of various projects/tasks while leveraging team members skills to complete projects/tasks.
- Document development efforts in repositories, user manuals, and presentations.
- Perform other duties as assigned.
In Addition at the SES.3 Level
- Provide solutions to complex problems that require in-depth analysis of multiple factors and the creative use of established methods.
- Handle multiple parallel tasks and priorities to ensure deadlines are met.
- Lead small teams to address key challenges on projects and implement solutions throughout the code infrastructure.

- Bachelors degree in Computer Science, Computer Engineering or related field or an equivalent combination of education and related experience.
- Experience with Python and developing in C++, using Object Oriented Design concepts (inheritance, polymorphism, design patterns, etc.).
- Experience with software code development on Linux or Unix-based platforms.- Experience with the Message Passing Interface (MPI) library, OpenMP, threading libraries, or heterogeneous computing.- Comprehensive knowledge of C++ templates, the STL library, software quality standard methodologies, or software configuration management tools (Subversion, Perforce, git, etc).
- Effective analytical, problem-solving and decision-making skills to develop creative solutions to complex problems and time management, organization, and planning skills with experience prioritizing concurrent technical tasks.
- Experience working effectively in a diverse development team environment.
- Proficient verbal and written communication and social skills necessary to work effectively in a large technical team environment.
In Addition at the SES.3 Level
- Masters degree in Computer Science, Computer Engineering or related field.
- Significant experience with the Message Passing Interface (MPI) library, OpenMP, Threads, or heterogeneous computing.
- Advanced C++ or Python programming skills and familiarity with mesh-based computational modeling principles or science-based computational simulations.

Pre-Employment Drug Test: External applicant(s) selected for this position will be required to pass a post-offer, pre-employment drug test.This includes testing for use of marijuana as Federal Law applies to us as a Federal Contractor.

Security Clearance: This position requires a Department of Energy (DOE) Q-level clearance.

If you are selected, wewill initiate a Federal background investigation to determine if youmeet eligibility requirements for access to classified information or matter. In addition, all L or Q cleared employees are subject to random drug testing. Q-level 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.

Note: This listing has multiple openings; these are Career Indefinite positions. Lab employees and external candidates may be considered for these positions.

About Us

Lawrence Livermore National Laboratory (LLNL), located in the San Francisco Bay Area (East Bay), is a premier applied science laboratory that is part of the National Nuclear Security Administration (NNSA) within the Department of Energy (DOE). LLNL's mission is strengthening national security by developing and applyingcutting-edge science, technology, and engineering that respond with vision, quality, integrity, and technical excellence to scientific issues of national importance. The Laboratory has a current annual budget of about $1.8 billion, employing approximately 6,500 employees.

LLNL is an affirmative action/ equal opportunity employer. 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, protected veteran status, age, citizenship, or any other characteristic protected by law.


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Computational Scientist

Lawrence Livermore National Laboratory
Livermore, CA 94550

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