We have multiple openings for Computational Physicist seeking to pursue challenges relevant to national security in the development of multi-physics simulation codes. You will collaborate as part of an interdisciplinary code development team in advancing the state of the art in large-scale multi-physics simulation. The national security mission involves developing simulation capabilities for Stockpile Stewardship, nuclear counter-terrorism, conventional weapons, and high energy density physics experiments. The code development focus is on models and algorithms for use in high-performance computing on the latest large-scale parallel computing platforms. This position is in the Design Physics Division within the Weapons and Complex Integration (WCI) Directorate.

This position will be filled at either level based on knowledge and related experience as assessed by the hiring team. Additional job responsibilities (outlined below) will be assigned if hired at the higher level.

In this role you will

• Develop, release, and maintain models and algorithms using advanced simulation tools to support the physics capabilities based on requirements from a diverse user community.
• Provide technical support, informal training, and guidance to code users in the application of simulation tools developed.
• Participate in the development of simulation tools as part of a multi-disciplinary team.
• Present and disseminate research results at scientific conferences and in peer-reviewed publications, in both open and classified environments, internal and external to LLNL. Responsibilities may also include interacting with external stakeholders, both at NNSA and across the broader interagency, via offsite assignments.
• Promote and support plans to promote diversity, equity, and inclusion within the program.
• Perform other duties as assigned.

Additional job responsibilities at the SES.3 Level

• Develop, assess and provide in depth analysis of the physics capabilities in support of nuclear weapons simulations using advanced simulation tools to solve complex problems that may not be well defined.
• Collaborate as a technical expert on multidisciplinary team.
• Set specific technical strategies to achieve program goals.