Software Engineer

Join us and make YOUR mark on the World!

Lawrence Livermore National Laboratory (LLNL) has turned bold ideas into world-changing impact advancing science and technology to strengthen U.S. security and promote global stability. 

Our mission spans four critical national security areas nuclear deterrence, threat preparedness, energy security, and multi-domain defense empowering teams to take on the toughest challenges of today and tomorrow. With a culture built on innovation and operational excellence, LLNL is a place where your expertise can make a real impact.

We have openings for Software Engineers to join the Product Realization Applications Team in Strategic Deterrence Applications. The Product Realization Applications Team maintains enterprise solutions consisting of both custom and COTS-based software that play a major role in the configuration management of products and specifications critical to the Weapon Technologies and Engineering (WTE) Program mission. You will work independently, with a dynamic team of developers that develop and integrate enterprise systems, software, and hardware. You will be matrixed to the WTE Program within the Strategic Deterrence (SD) Directorate. This position is in the Applications, Simulations, and Quality (ASQ) Division in the Computing Directorate.

This position will be filled at either the SES.2 or SES.3 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

• Collaborate with stakeholders to gather requirements and design solutions.
• Contribute to the implementation, deployment, and maintenance of enterprise solutions consisting of both custom and COTS based software as part of a multi-disciplinary team.
• Employ moderately complex software engineering methods using industry standard software development practices, modern programming languages, and operating systems.
• Contribute to the development of applications including use of APIs, graphical user interface, database, and visualization applications.
• Participate in peer code reviews and technical walkthroughs to uphold code quality, encourage knowledge sharing, and ensure alignment with established architectural patterns.
• Collaborate with peers across other Nuclear Security Enterprise (NSE) sites to develop
  and implement strategies for data sharing and mapping within an NSE-wide federated solution.
• Document all designs and implements software under configuration management using a standard software repository to store source files.
• Perform other duties as assigned.

Additional job responsibilities, at the SES.3 level

• Function as a Team Leader, collaborating with the SD Applications Associate Program Leader in setting priorities for the team and assigning work to software development staff.
• Provide innovative solutions to complex problems that require in-depth analysis using existing tools to advance the management of product-related data.
• Provide solutions to complex data querying and management challenges and respond to user support inquiries.
• Manage multiple parallel technical tasks and priorities of customers and stakeholders to ensure complex deadlines are met.

• Ability to obtain and maintain a U.S. DOE Q-level security clearance which requires U.S. citizenship.
• Bachelor’s degree in Computer Science, Computer Engineering, or a related technical field, or the equivalent combination of education and related technical experience.
• Broad experience in object-oriented programming languages such as Java.
• Broad experience in web-based scripting languages such as TypeScript/JavaScript.
• Broad experience in Enterprise-level MVC (Model-View-Controller) frameworks and server-side rendering (e.g., JSP).
• Comprehensive knowledge of relational database design (SQL) and the consumption/design of web services (REST/JSON).
• Comprehensive knowledge working with Unix operating systems and managing application server deployments.
• Proficient verbal and written communication skills necessary to effectively collaborate in a team environment and explain technical information.

Additional qualifications at the SES.3 level

• Advanced knowledge of the product lifecycle management (PLM) and configuration management.
• leadership skills with demonstrated ability to direct technical tasks to
  project teams, while providing vision for capability development.
• Advanced verbal and written communication, and collaboration skills necessary to present, explain, and advise senior management and/or external sponsors.
• Significant experience effectively managing concurrent technical tasks with competing priorities.
• Significant experience supporting multiple independent inter-related systems and software packages.
• Significant experience providing innovative solutions to not well-defined tasks and complex problems and collaborating with system developers and vendors.

Qualifications We Desire

• Experience with LLNL policies and procedures
• Experience working with a PLM application
• Practical LLM/AI Usage Fundamentals
• Familiarity with AI Frameworks and different AI models
• Familiarity with web hooks, event handlers, background jobs, and batch processing 
• Master's degree in Computer Science, Computer Engineering, or a related field

Pay Range

$146,340 - $185,544 Yearly at the SES.2 level

$175,530 - $222,564 Yearly at the SES.3 level

This is the lowest to highest salary in good faith 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.

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?

• 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 https://www.llnl.gov/inclusion/our-values

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: https://www.llnl.gov/sites/www/files/2023-05/LLNL-Job-Fraud-Statement-Updated-4.26.23.pdf

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.