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HPC Software Developer

Mid-Senior Level | Full-time
Information Technology/Computing | livermore, CA | 03/17/2023

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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 committed to a diverse and equitable workforce with an inclusive culture that values and celebrates the diversity of our people, talents, ideas, experiences, and perspectives. This is essential to innovation and creativity for continued success of the Laboratory’s mission.

Pay Range

$178,410 - $240,384 Annually

Please note that the pay range information is a general guideline only. Many factors are taken into consideration when setting starting pay including education, experience, the external labor market, and internal equity.

Job Description

We have an opening for a HPC Software Developer to support a variety of software development assignments. You will work in an environment that focuses on problems of interest to LLNL and Department of Energy (DOE) programs as a member of a dynamic, multidisciplinary team environment. You will apply fundamental knowledge of HPC software development and contribute to technical projects using creativity and imagination. This position will be in support of the Weapon Simulation and Computing (WSC) Computational Physics Program. The position will be in the ASQ division within the Computing Directorate.

Essential Duties

  • Employ complex software engineering methods using industry standard software development practices and modern programming languages and operating systems.
  • Develop a range of applications including scientific, graphical user interface, database, and visualization applications.
  • Lead in the requirements definition, analysis, design, implementation, debugging, testing, and optimization of computer programs on HPC platforms.
  • Design, implement, deploy, and maintain software systems using object-oriented analysis, design, and programming techniques.
  • Lead in the fulfillment of technical projects and organizational objectives functioning as an effective team member and possible team leader on multi-disciplinary teams.
  • Engage other developers and stakeholders frequently to share relevant knowledge, opinions, and recommendations.
  • Manage multiple advanced parallel tasks and priorities of customers and stakeholders, ensuring deadlines are met, while leveraging team member’s skills.
  • Provide solutions to complex problems that require in-depth analysis of tangible and intangible factors.


  • Bachelor’s degree in Computer Science, Computer Engineering, or related field, or the equivalent combination of education and related experience.
  • Significant experience in object-oriented programming with high-level languages such as C++ and interpreted languages such as Python.
  • Expert level experience developing software with either Python or C++ within Linux and/or Windows environments.
  • Significant experience with source code control systems, such as Subversion or Git.
  • Expert level knowledge and significant experience developing HPC software including distributed memory computing with MPI.
  • Expert level knowledge and significant experience designing, implementing, deploying, and maintaining software systems using object-oriented analysis, design, and programming techniques.
  • Significant experience providing innovative approaches and applying new technologies to broadly defined tasks and projects.
  • Significant experience approaching difficult problems with enthusiasm and creativity.
  • Advanced ability to work effectively with minimal guidance and provide innovative approaches and apply new technologies to broadly defined tasks and projects with effective analytical and problem-solving skills for complex problems.
  • Expert interpersonal, verbal and written communication skills necessary to effectively collaborate in a technical team environment to present, explain and provide advice to management.

 Desired Qualifications

  • Master’s degree in Computer Science, Computer Engineering, or a related field.
  • Experience with OpenMP, parallel programming, GPU programming, containers, continuous integration.

Additional Information

All your information will be kept confidential according to EEO guidelines.

Position Information

This is a Career Indefinite position, open to Lab employees and external candidates.

Why Lawrence Livermore National Laboratory?

Security Clearance

This position requires a Department of Energy (DOE) Q-level clearance.  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. Also, all L or Q cleared employees are subject to random drug testing.  Q-level clearance requires U.S. citizenship. 

Pre-Employment Drug Test

External applicant(s) selected for this position must 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.

Equal Employment Opportunity

We are an equal opportunity employer that is committed to providing all with a work environment free of discrimination and harassment. 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.

We invite you to review the Equal Employment Opportunity posters which include EEO is the Law and Pay Transparency Nondiscrimination Provision.

Reasonable Accommodation

Our goal is to create an accessible and inclusive experience for all candidates applying and interviewing at the Laboratory.  If you need a reasonable accommodation during the application or the recruiting process, please use our online form to submit a request. 

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.

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