Senior Software Engineer

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 dedicated to fostering a culture that values individuals, talents, partnerships, ideas, experiences, and different perspectives, recognizing their importance to the continued success of the Laboratory’s mission.

Pay Range

$168,780 - $214,032 Annually for the SES.3 level

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.

We have an opening for a Senior Software Engineer. You will be a member of the Cloud, AI Integration and Applications team where you will design, develop, and support cloud-based applications and AI integrations that serve the laboratory. You will contribute to both frontend and backend development for applications that enable governance, security, and effective use of cloud and AI services across the enterprise. Your work will play a critical role in enabling the workforce to securely and efficiently adopt modern technologies. This position is in the Information Technology Solutions (ITS) Division within the Computing Directorate, in support of LivIT. 

This position offers a hybrid schedule, blending in-person and virtual presence. You will have the flexibility to work from home one or more days per week.

You will

• Design, develop, and maintain full stack applications using modern frameworks, cloud-native services, and AI-assisted tools.
• Build intuitive, user-centered frontends using Angular or similar frameworks, and integrate with backend APIs.
• Lead architecture and design of applications and microservices using best practice design patterns and event-driven architectures.
• Implement and maintain CI/CD pipelines to support automated testing, deployment, and security enforcement.
• Design and optimize data models for both relational (e.g., PostgreSQL) and non-relational (e.g., DynamoDB) databases.
• Integrate applications with AWS services such as Lambda, S3, RDS, DynamoDB, SNS, and SQS.
• Collaborate with scientists, developers, and stakeholders to gather requirements, share knowledge, and communicate solutions.
• Manage multiple complex development efforts using agile methodologies while staying current with emerging technologies and AI capabilities.
• 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, engineering, or related field, or equivalent combination of education and experience.
• Significant background in developing software using object-oriented programming (e.g., Java, C#, .NET) with adherence to SOLID principles.
• Advanced proficiency in frontend development using frameworks like Angular, React, or Vue.
• Extensive knowledge of relational and/or non-relational databases (e.g., PostgreSQL, DynamoDB).
• Hands-on expertise with AWS core services (e.g., EC2, Lambda, S3, RDS, SNS, SQS, VPC, CloudWatch) or equivalent Azure offerings.
• Practical experience with infrastructure as code (e.g., CloudFormation, Terraform), CI/CD tools, version control systems, and use of AI-powered coding assistants like GitHub Copilot or ChatGPT.
• Strong communication and collaboration skills with the ability to adapt to rapidly evolving technologies.

Qualifications We Desire

• Proven experience translating business needs into technical requirements.
• Professional certifications in AWS or Azure.
• Familiarity with security frameworks and compliance standards such as NIST, CIS Benchmarks, or FedRAMP.

#LI-Hybrid

Position Information

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

Why Lawrence Livermore National Laboratory?

• Included in 2025 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.