Job description

We have an opening for a Software Engineer to help develop innovative software for ASD Scorpius, one-of-a-kind next-generation linear induction accelerator that will generate multiple, precisely timed, high-energy X-ray images during subcritical experiments, providing scientists with unprecedented experimental data to better understand material behavior under extreme conditions. You will work at the intersection of software, data, controls, and experimental science, developing intuitive data-visualization and user-interface capabilities that help scientists and engineers' access, understand, and interact with complex accelerator and experimental data. You will help build software that connects data-recall systems, databases, and accelerator controls, transforming large volumes of technical information into useful, accessible tools for the multi-disciplinary team commissioning and operating this unique system. You will work alongside experienced software developers, controls engineers, scientists, and project personnel and have the opportunity to see your software become part of a major experimental capability from development through integration and commissioning. This is an opportunity to begin your career working on challenging, mission-critical software where the connection between code and real-world engineering is immediate. The software approaches and experience developed on Scorpius will also be applicable to other major experimental systems and future national-security capabilities at LLNL. This position is in the National Security Engineering Division (NSED) within the Engineering Directorate. This position requires full-time on-site presence due to the nature of the work. You will • Develop and maintain software applications and graphical user interfaces for visualization, retrieval, and presentation of engineering and experimental data. • Implement well-defined software features that interface with data sources, databases, application programming interfaces (APIs), and controls-related software. • Apply fundamental software engineering concepts, techniques, practices, and procedures to solve problems using standard development methodologies. • Develop software components using appropriate programming languages, frameworks, and development tools in accordance with established project requirements and coding practices. • Implement data-processing and data-recall functionality to support efficient access to engineering and experimental information. • Develop and execute unit, integration, and automated tests to verify software functionality, identify defects, and support reliable software operation. • Participate in software design discussions, code reviews, configuration management, documentation, and other established software-development lifecycle activities. • Collaborate with engineers, scientists, software developers, and project personnel to understand requirements, communicate technical progress, and integrate software components into larger engineering systems. • Perform other duties as assigned. • Ability to secure and maintain a U.S. DOE Q level security clearance which requires U.S. citizenship. • Bachelor's degree in Computer Science, Software Engineering, Computer Engineering, or a related science, engineering, or technical field, or equivalent level of demonstrated knowledge. • Fundamental knowledge of software engineering and computer science concepts, techniques, practices, and procedures, including object-oriented programming, data structures, software design, and software development lifecycle practices. • Fundamental knowledge and experience applying one or more modern programming languages such as Python, Java, Kotlin, C/C++, C#, JavaScript/TypeScript, or similar languages to software-development assignments. • Knowledge of developing software applications that interact with databases, structured data, APIs, or other software services. • Knowledge of graphical user interface, web application, or data-visualization development concepts and techniques. • Experience using standard software-development tools and practices such as version control, testing, debugging, and collaborative software-development workflows. • Experience applying standard technical principles, theories, concepts, and techniques to well-defined software-development problems. • Sufficient verbal and written communication skills to collaborate effectively in a team environment and present and explain technical information Qualifications We Desire • Experience developing graphical user interfaces or interactive web applications using technologies such as React, JavaScript/TypeScript, or comparable frameworks. • Experience working with SQL databases, REST APIs, data-processing pipelines, or scientific/engineering data. • Experience with Linux development environments, Git-based workflows, automated testing, CI/CD, containers, or related modern software-development tools. Pay Range $121,830 - $154,500 Annually This is the lowest to highest salary we in good faith believe we would pay for this role at the time of this posting; pay will not be below any applicable local minimum wage. An employee’s position within the salary range will be based on several factors including, but not limited to, specific competencies, relevant education, qualifications, certifications, experience, skills, seniority, geographic location, performance, and business or organizational needs. #LI-Onsite Position Information This is a Career Indefinite position, open to Lab employees and external candidates. Why Lawrence Livermore National Laboratory? • Included in 2026 Best Places to Work by Glassdoor! • Flexible Benefits Package • 401(k) • Relocation Assistance • Education Reimbursement Program • Flexible schedules (*depending on project needs) • Our values - visit llnl.gov 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. Wireless and Medical Devices Per the Department of Energy (DOE), Lawrence Livermore National Laboratory must meet certain restrictions with the use and/or possession of mobile devices in Limited Areas. Depending on your job duties, you may be required to work in a Limited Area where you are not permitted to have a personal and/or laboratory mobile device in your possession. This includes, but not limited to cell phones, tablets, fitness devices, wireless headphones, and other Bluetooth/wireless enabled devices. If you use a medical device, which pairs with a mobile device, you must still follow the rules concerning the mobile device in individual sections within Limited Areas. Sensitive Compartmented Information Facilities require separate approval. Hearing aids without wireless capabilities or wireless that has been disabled are allowed in Limited Areas, Secure Space and Transit/Buffer Space within buildings. How to identify fake job advertisements Please be aware of recruitment scams where people or entities are misusing the name of Lawrence Livermore National Laboratory (LLNL) to post fake job advertisements. LLNL never extends an offer without a personal interview and will never charge a fee for joining our company. All current job openings are displayed on the Career Page under “Find Your Job” of our website. If you have encountered a job posting or have been approached with a job offer that you suspect may be fraudulent, we strongly recommend you do not respond. To learn more about recruitment scams: llnl.gov 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. 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 .

Requirements

Must-haves

This position requires full-time on-site presence due to the nature of the work.
Develop and maintain software applications and graphical user interfaces for visualization, retrieval, and presentation of engineering and experimental data.
Implement well-defined software features that interface with data sources, databases, application programming interfaces (APIs), and controls-related software.
Apply fundamental software engineering concepts, techniques, practices, and procedures to solve problems using standard development methodologies.
Develop software components using appropriate programming languages, frameworks, and development tools in accordance with established project requirements and coding practices.
Implement data-processing and data-recall functionality to support efficient access to engineering and experimental information.
Develop and execute unit, integration, and automated tests to verify software functionality, identify defects, and support reliable software operation.
Participate in software design discussions, code reviews, configuration management, documentation, and other established software-development lifecycle activities.
Collaborate with engineers, scientists, software developers, and project personnel to understand requirements, communicate technical progress, and integrate software components into larger engineering systems.
Perform other duties as assigned.
Ability to secure and maintain a U.S. DOE Q level security clearance which requires U.S. citizenship.
Bachelor's degree in Computer Science, Software Engineering, Computer Engineering, or a related science, engineering, or technical field, or equivalent level of demonstrated knowledge.
Fundamental knowledge and experience applying one or more modern programming languages such as Python, Java, Kotlin, C/C++, C#, JavaScript/TypeScript, or similar languages to software-development assignments.
Knowledge of developing software applications that interact with databases, structured data, APIs, or other software services.
Knowledge of graphical user interface, web application, or data-visualization development concepts and techniques.
Experience using standard software-development tools and practices such as version control, testing, debugging, and collaborative software-development workflows.
Experience applying standard technical principles, theories, concepts, and techniques to well-defined software-development problems.
Sufficient verbal and written communication skills to collaborate effectively in a team environment and present and explain technical information
Qualifications We Desire
Experience developing graphical user interfaces or interactive web applications using technologies such as React, JavaScript/TypeScript, or comparable frameworks.
Experience working with SQL databases, REST APIs, data-processing pipelines, or scientific/engineering data.
Experience with Linux development environments, Git-based workflows, automated testing, CI/CD, containers, or related modern software-development tools.
$121,830 - $154,500 Annually
Position Information

Nice-to-haves

None flagged.

Application prep

Use the role’s language and application details while tailoring your materials.

Keywords to mirror

pythonjavakotlinjavascripttypescriptreactsqlrestci/cd

Platform: smartrecruiters
Effort: medium

Benefits

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Vision

401(K)