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Senior Security and System Software Developer

Mid-Senior Level | Full-time
Information Technology/Computing | livermore, CA | 05/02/2024

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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 important for continued success of the Laboratory’s mission.

Pay Range

$159,330 - $204,636 annually

Job Description

We have an opening for a Senior Security and System Software Developer on a team that researches, designs, develops, maintains, and integrates software and hardware solutions for protecting LLNL computing services and systems within the Livermore Computing high-performance computing center. In this role, you will apply software development experience and security knowledge towards the support of authentication, authorization, security information and event management, web application security, and identity management technologies utilized to maintain secure operating environments for Livermore Computing resources and critical institutional services at LLNL. This position is in the Livermore Computing Division within the Computing Principal Associate Directorate.

This position requires an on-site presence, and therefore will have limited telecommuting options.

You will 

  • Guide effort to develop tools or processes for automating deployment, testing, or monitoring procedures that improve the efficiency and operations of the centralized security services.
  • Provide security consulting and perform security review and evaluation of proposed system designs, applications and commercial products.
  • Provide technical leadership and guide efforts to develop tools or processes for improving the efficiency and operations of users and staff. Effectively perform duties using independent judgment and minimal direction.
  • Design, implement, and maintain software systems that enable secure access and protection against threats and attacks using security best practices.
  • Configure and manage deployed services associated with the centralized authentication and authorization services.
  • Integrate custom software, such as authentication modules and authorization mechanisms, into open-source software packages or commercial products to enhance or extend the security controls and capabilities of our multi-site collaborative environment.
  • Monitor production services and respond to system problems and user issues.
  • Perform other duties as assigned.


  • Bachelor’s degree in computer science or related field or the equivalent combination of education and related experience.
  • Advanced proficiency developing software in a team environment with two or more of the following programming languages: C, C++, Java, Perl, or Python.
  • Advanced knowledge of fundamental networking and experience with network troubleshooting in a Linux environment.
  • Advanced analytical and problem-solving skills to contribute to creative solutions to complex problems in cross-organizational efforts.
  • Significant experience providing innovative approaches and applying new technologies to broadly defined tasks and projects.
  • Advanced verbal and written communication skills necessary to effectively collaborate in a team environment and present and explain technical information and provide advice to management.
  • Ability to work on a 24x7 on-call rotational schedule.

Qualifications We Desire

  • Master’s degree in computer science or related field.
  • Experience implementing solutions using one or more of the following data networking and security technologies: RSA SecurID, SSH, Kerberos, RADIUS, OAuth/OIDC.
  • Experience administrating F5 – BIG IP web application firewalls.
  • Experience with data management languages and protocols such as LDAP and SQL.
  • Knowledge of security vulnerability analysis techniques and practices.

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.

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:

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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