Network Engineer

We have an opening for a Network Engineer. You will primarily work in a classified environment to support LLNLs diverse enterprise network architecture by helping design and operate IP/MPLS backbone networks cloud connectivity and services such as VPN Internet edge DNS remote access wireless and security across both unclassified and classified environments. You will install configure and maintain network hardware and software in a highly technical environment similar to a major service provider with exposure to modern networking AI-assisted automation and top vendors like Cisco Palo Alto Networks Aruba AWS Azure and GCP. This position is in the Enterprise Infrastructure Services (EIS) Division with the Computing Directorate in support of LivIT and the Strategic Deterrence Group (SD).

This position requires full-time on-site presence due to the nature of the work.

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.

You will 

• Collaborate on the design and architecture of campus and datacenter networks utilizing advanced network technologies such as EVPN VXLAN MPLS and MVPN.
• Perform network administration and troubleshooting tasks to configure operate and maintain network equipment including switches routers firewalls load balancers and other equipment.
• Collaborate with Cyber Security Team to implement comprehensive network security architectures policies and monitoring.
• Engage with vendors to evaluate network products and services.
• Work in a fast-paced and challenging environment with multiple competing priorities while managing to maintain sound judgement and excellent customer service.
• Work within the unclassified environment inside ENS until a Q clearance is obtained.
• Stay up to date with the latest industry network architectures and best practices.
• Perform occasional work outside normal business hours in order to provide support for network operations and maintenance activities.
• Participate in an on-call duty rotation.
• Perform other duties as assigned.

Additional job responsibilities at the SES.3 level 

• Design and deliver advanced customized networks in alignment with customer requirements and enterprise network strategies.
• Independently design test configure and effectively utilize network management and monitoring tools.
• Diagnose resolve and document complex network problems.

Qualifications :

• Ability to obtain and maintain a US DOE Q-level security clearance which requires U.S. Citizenship.
• Bachelors degree in Information Technology Computer Science Engineering or related discipline or the equivalent combination of technical training and related experience.
• Broad experience in network system design configuration implementation documentation and operations.
• Broad and in-depth knowledge of and experience with network routing and switching including OSPF IS-IS or BGP and Spanning-tree.
• Familiarity with common network automation frameworks such as Ansible and Python.
• Broad and in-depth knowledge of and experience in firewall configuration and maintenance particularly Palo Alto NGFW.
• Comprehensive working knowledge of edge port security features such as 802.1x.
• Broad experience of F5 Load Balancers.
• Proficient interpersonal and verbal and written communications skills with the ability to work independently and interact with customers and team members.

Additional qualifications at the SES.3 level 

• Significant experience developing advanced architecture solutions.
• Advanced troubleshooting skills and experience solving problems by analyzing protocol interactions collected in packet traces.
• Experience training and mentoring team members in network engineering and architecture.

Qualifications We Desire

• Cisco Certified Network Associate (CCNA) Cisco Certified Network Professional Certifications (CCNP) or comparable industry certification from another vendor.
• Experience with network overlay technologies such as GRE IPSec MPLS and VXLAN.
• F5 NetScaler or other load balancers and features.
• Experience with SCADA or Industrial Controls networks.

Pay Range

Pay Range

$146340 - $185544 Annually for the SES.2 level
$175530 - $222564 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 employees 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-Onsite

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  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.

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  Remote Work :

  No

  
  

  Employment Type :

  Full-time