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Security Software Engineer

Mid-Senior Level | Full-time
Information Technology/Computing | livermore, CA | 05/11/2023

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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

$123,960.00  - $159,168.00  Annually for the SES.2 level

$148,650.00  - $190,932.00  Annually for the SES.3 level

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 Security Software Engineer to support and develop tools and processes for securing high performance computers. You will work independently to support and apply software and security engineering skills on a variety of hardware platforms to identify and remediate compliance issues and harden our infrastructure and services to meet our baselines. This position is in the Livermore Computing Division within the Computing Directorate.

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

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

  • Build security into the HPC operating system environment.
  • Identify issues and propose solutions to technical problems across a wide range of projects and efforts to improve design and implementation of security best practices.
  • Perform software engineering using established development practices, tools, and processes for achieving robust software quality; including testing, configuration management, change management, and documentation.
  • Engineer solutions to automate the measurement and enforcement of security baselines on predominantly Linux systems, across multiple disjoint network enclaves.
  • Interact directly with other LC groups regarding security best practices for configuration of HPC systems.
  • Define, scope, prioritize, and estimate work collaboratively.
  • Develop and improve technical and interpersonal skills for yourself and the team.
  • Perform other duties as assigned.

 Additional job responsibilities at the SES.3 Level

  • Independently solve moderately complex problems existing throughout a heterogeneous distributed environment.
  • Provide technical leadership and guide efforts to develop tools or processes for improving the efficiency and technical operations of users and staff.
  • Effectively perform duties using independent judgment and minimal direction.


  • 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 field, or the equivalent combination of education and related experience.
  • Proficiency securing Unix/Linux systems in a production environment.
  • Strong familiarity with configuration guideline frameworks, such as, CIS benchmarks and/or DISA STIGs.
  • Experience with Python, Bash, or similar scripting / languages, particularly for use in automation processes.
  • Knowledge of software testing and quality assurance strategies.
  • Familiarity with version control systems.
  • Experience as a software developer.
  • Proficient written and verbal communication skills necessary to effectively collaborate in a multi-disciplinary team environment, as well as the ability to work effectively with minimal guidance and as part of a team.

Additional qualifications at the SES.3 Level

  • Advanced experience with implementing solutions to emerging cyber security concerns.
  • Advanced analytical and problem-solving skills to contribute to creative solutions to complex problems in cross-organizational efforts.
  •  Advanced verbal and written communication and interpersonal skills necessary to work effectively in a technical team environment and to represent LLNL in public forums.

Qualifications We Desire

  • Proficiency in building and managing security monitoring tools for Linux systems.
  • Strong understanding of securing containers and their orchestration systems, as well as, experience with one or more configuration management tools like Ansible or CFEngine.
  • Experience working in network environments across multiple classification levels.
  • Knowledge of DOE/NNSA/LLNS policies and procedures.


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.

Beware of Fraudulent Recruiting Advertisements. LLNL’s hiring practices:

  • Never requires job applicants to pay an application/training fee or submit personal documents like bank account details, passport number, Social Security number, tax forms or credit card information as part of the application process. 
  • For interviews and to be granted access to a Federal facility, a LLNL employee will contact you directly to collect visa, passport number, and/or Social Security number.  To vet the authenticity of the employee please have them provide you their name and phone number and verify at
  • Involves at least one interview (virtual or in-person) and never interviews job applicants through chat platforms such as Google Hangouts, or via correspondence through text and instant messaging systems.
  • Only sends email communications to job applicants from domain “” or via their applicant tracking system, [email protected]. Occasionally LLNL uses third-party vendors that will contact you about job opportunities.  If a recruiter contacts you to apply, you will always be directed to our career page to apply through our career site.
  • Encourages all applicants to visit LLNL’s careers page at if they saw the job posting on another site prior to applying to ensure the job posting is accurate and valid.

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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