Cloud and Core Networking Engineer

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<div class="isg-job-description“>Company Description

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.

Job Description

We have an opening for a Cloud and Core Networking Engineer. You will play a critical role in helping the laboratory seamlessly adopt and operate multi cloud architectures across AWS, Azure, and GCP, with responsibility for cloud governance, management, and security. You will join the Enterprise Network Services team, which designs, deploys, and operates carrier grade networks and cloud networking infrastructure at scale, leveraging Terraform automation in environments with more than 100 AWS accounts and thousands of VPCs to ensure all network components are fully built, deployed, and decommissioned against a Nautobot source of truth. This position is in the Enterprise Infrastructure Services (EIS) Division with 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.

This position will be filled at either the SES.3 or SES.4 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.

You will

• Collaborate with service owners, network engineers, developers, stakeholders, and leadership to develop consensus-based outcomes around cloud infrastructure provisioning, monitoring, management, and troubleshooting.
• Collaborate on the design and architecture of a hybrid, multi-cloud environment, including providing a secure and robust network backbone.
• Design and deliver advanced automation and infrastructure-as-code solutions to streamline provisioning and management of deployed green- and brown-field resources.
• Engage with laboratory scientists, researchers, and developers to understand their workloads and help drive solutions toward cloud-native technologies.
• Draft and maintain architectural documentation and artifacts, including as-builts, runbooks, and demonstration code.
• Stay up to date with the latest industry hybrid network architectures and best practices.
• Present and communicate solutions to technical and non-technical stakeholders.
• Perform other duties as assigned.

Additional job responsibilities, at the SES.4 level

• Independently define, prioritize, and execute the technical roadmap for multi-cloud + data-center networking, translating loosely defined objectives into deliverable architectures, implementation plans, and milestone outcomes.
• Provide expert-level routed network design across AWS/Azure/GCP and on-prem data centers, including routing domain boundaries, segmentation strategy, and failure-domain design to meet long-range reliability, security (PAN), and performance targets.
• Apply expertisein BGP-based connectivity and routing policy (path selection, summarization, route filtering/leak prevention, deterministic failover), validating convergence behavior and preventing asymmetric routing impacts across stateful enforcement points.

Qualifications

• Ability to obtain and maintain a US DOE Q-level security clearance which requires U.S. Citizenship.
• Bachelor’s degree in Computer Science, Engineering, or related field or the equivalent combination of education and related experience.
• Significant experience with network system design, configuration, implementation, documentation, and operations.
• Advanced knowledge of network engineering principles, such as routing, switching, and VPN or overlay technologies, such as BGP EVPN, IGPs such as OSPF or IS-IS, IPSec, or other WAN/DCI technologies.
• Advanced experience with AWS networking services including AWS Direct Connect, Transit Gateway, Route53, and VPC.
• Significant experience working with Ansible and Python automation and related libraries focused on networking.
• Advanced experience with three or more of the following: Cisco 9000/6000 series routers; Aruba AirWave, Central, and ClearPass; Palo Alto firewalls; Nautobot SOT (Network-to-Code); Zabbix monitoring with Prometheus, Datadog, and Grafana integrations; Claude Code for well-documented automation; and intermediate to advanced Confluence and Jira; AWS Lambda, ECS or EKS, API Gateway, or equivalent Azure services.
• Advanced interpersonal, verbal and written communications skills, with the ability to work independently and collaborate with stakeholders and team members.

Additional qualifications at the SES.4 level

• Provide technical guidance, training and leadership to teams deploying the most modern and advanced cloud networking solutions aligned with best practices for multi-cloud network environments.
• Expert-level experience designing and implementing complex cloud network solutions from scratch, where you were responsible for making complex technical recommendations.
• Experience training and mentoring team members in network and cloud engineering and architecture.

Qualifications We Desire

• Active networking certifications such as Cisco CCIE, AWS Networking Specialist.

Pay Range

$175,530 – $222,564 Annually for the SES.3 job level
$210,630 – $267,060 Annually for the SES.4 job 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.

Additional Information

#LI-Hybrid

Position Information

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

Why Lawrence Livermore National Laboratory?

• Included in 2026Best Places to Work by Glassdoor!
• FlexibleBenefits Package
• 401(k)
• Relocation Assistance
• Education Reimbursement Program
• Flexible schedules (*depending on project needs)
• Our values – visithttps://www.llnl.gov/inclusion/our-values

Security Clearance

This position requires a Department of Energy (DOE) Q-level clearance.If you are selected, wewill initiate a Federal background investigation to determine if youmeet 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 useand/or possession ofmobile devices in Limited Areas. Depending on your job duties, you may be required to work in a Limited Area whereyou are not permitted to have a personal and/or laboratory mobile devicein your possession. This includes, but not limited to cell phones, tablets, fitness devices, wireless headphones, and other Bluetooth/wireless enabled devices.

Ifyou useamedical device, whichpairs with a mobile device,you must still follow the rules concerningthe mobile device in individual sections within Limited Areas. Sensitive Compartmented Information Facilities requireseparate 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.

CaliforniaPrivacy Notice

The California Consumer Privacy Act (CCPA) grants privacy rights to all California residents. The law also entitlesjob 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.

LLNL is an affirmative action/ equal opportunity employer. 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, protected veteran status, age, citizenship, or any other characteristic protected by law.