Systems Network Engineer II

SAIC; San Diego (CA); On-site; USD 90,000 - 130,000; Full time

Job summary

SAIC seeks a Systems Network Engineer II to design, configure, integrate, and sustain secure network infrastructure across on-premises labs, cloud environments, and distributed computing platforms. You will collaborate with network, cloud, cybersecurity, software, and infra teams to troubleshoot connectivity and maintain documentation.

The role emphasizes hands-on troubleshooting, expansion into cloud networking, containerized environments, and modern infrastructure technologies in an onsite San

Qualifications

• Bachelor's degree with 5+ years of related experience or higher degrees with equivalent experience.
• Strong foundational experience in network engineering, administration, or infrastructure roles.
• Experience configuring Layer 2/3 networks, including switching, routing, VLANs, and segmentation.
• Knowledge of TCP/IP, DNS, DHCP, routing, and network addressing.
• Experience with firewalls, ACLs, VPNs, and security technologies.
• Ability to troubleshoot connectivity, performance, latency, and configuration issues using network monitoring tools.
• Experience documenting topology, data-flow, and configuration records.

Responsibilities

• Configure, maintain, and troubleshoot Layer 2 and Layer 3 network infrastructure across on-premises lab, test, cloud, and distributed environments.
• Support connectivity by integrating compute nodes with network infrastructure and cloud/on-prem services.
• Develop and maintain network topology diagrams, data-flow docs, and interface information.
• Configure and maintain network security controls (ACLs, firewall rules, segmentation) for least-privilege access.
• Deploy, monitor, and troubleshoot secure remote and site-to-site connectivity (IPsec, SSL/VPN).
• Monitor network health, throughput, packet loss, and latency; troubleshoot L2/L3 issues.
• Support provisioning of cloud networking components (VPCs/VNets, subnets, route tables, peering, private endpoints).
• Collaborate with senior engineers, cloud/platform teams, cybersecurity, software, and infra groups to resolve complex issues.

Skills

Layer 2/3 networking

Network troubleshooting

Access control lists

VPNs (IPsec/SSL)

Network security hardening

Documentation & diagrams

Collaboration across teams

Cloud networking concepts

TLS/SSL knowledge

Education

Bachelor's Degree in a related field

Master's Degree

PhD

Tools

Wireshark

Firewall appliances

VPN technology

IPsec

Cloud networking (VPCs/VNets)

Job description

SAIC seeking a Systems Network Engineer II to support the design, configuration, integration, and sustainment of secure network infrastructure supporting distributed computing, cloud, and software environments. This mid-level role will work across on-premises lab and test environments, cloud infrastructure, and distributed computing platforms to maintain reliable and secure connectivity. The candidate will collaborate with network engineers, cloud and platform teams, cybersecurity personnel, software developers, and other technical stakeholders to troubleshoot network issues, maintain network documentation, implement access controls, and support emerging capabilities. The ideal candidate possesses strong foundational networking skills, hands-on troubleshooting experience, and an interest in expanding their expertise across cloud networking, containerized environments, network automation, and modern infrastructure technologies.

THIS IS AN ONSITE ROLE IN SAN DIEGO, CA. WITH UP TO 5% OF CONUS/OCONUS TRAVEL INVOLVED.

JOB DUTIES:

• Configure, maintain, and troubleshoot Layer 2 and Layer 3 network infrastructure supporting on-premises, laboratory, test, cloud, and distributed computing environments.
• Support network connectivity by integrating compute nodes, network infrastructure, and cloud or on-premises backend services.
• Develop and maintain network topology diagrams, data-flow documentation, configuration records, interface information, and other technical artifacts documenting system connectivity and network dependencies.
• Configure and maintain network security controls, including Access Control Lists (ACLs), firewall policies, traffic filtering rules, ports and protocols, and network segmentation to support least-privilege access.
• Deploy, monitor, troubleshoot, and maintain secure remote and site-to-site connectivity using IPsec, SSL/client-based VPNs, and other approved communications technologies.
• Monitor network health, availability, throughput, packet loss, and latency using network monitoring and diagnostic technologies while troubleshooting L2/L3 issues affecting applications and infrastructure.
• Support provisioning and configuration of cloud networking components, including VPCs/VNets, subnets, route tables, peering connections, security controls, and private endpoints used to connect cloud services with enterprise and distributed computing environments.
• Support network security hardening, configuration reviews, vulnerability remediation, port and protocol reviews, and implementation of applicable cybersecurity requirements and technical security baselines.
• Collaborate with senior network engineers, cloud and platform teams, cybersecurity personnel, software developers, and infrastructure engineers to resolve complex connectivity issues and support integration, testing, deployment, and sustainment activities.

REQUIREMENTS :

• Bachelors and five (5) years or more experience; Masters and three (3) years or more experience; PhD and 0 years related experience
• Must be a U.S. Citizen
• Must have an Active Secret clearance to start
• Must be able to obtain a TS/SCI after start
• Strong foundational experience in network engineering, network administration, systems networking, infrastructure engineering, or related technical roles.
• Experience configuring, maintaining, and troubleshooting Layer 2 and Layer 3 networks, including switching, routing, VLANs, subnets, and network segmentation.
• Understanding of core networking concepts and protocols, including TCP/IP, DNS, DHCP, routing, ports and protocols, and network addressing.
• Experience configuring or supporting firewalls, ACLs, VPNs, traffic filtering, network access controls, or other network security technologies.
• Experience troubleshooting network connectivity, performance, latency, routing, and configuration issues using network monitoring and diagnostic tools.
• Experience developing or maintaining network diagrams, topology documentation, configuration records, data-flow diagrams, or other network engineering documentation.
• Understanding of cybersecurity principles, network hardening, least-privilege access, vulnerability remediation, and secure network configuration practices.
• Strong analytical and problem-solving skills with the ability to troubleshoot technical issues across networks, systems, applications, and infrastructure.
• Strong written and verbal communication skills with the ability to collaborate effectively with network, cloud, cybersecurity, software, infrastructure, and engineering teams.

DESIRED SKILLS:

• Experience supporting distributed computing, edge computing, robotics, unmanned platforms, or other complex technology environments.
• Familiarity with AWS, Azure, GCP, or similar cloud platforms and networking constructs such as VPCs/VNets, subnets, route tables, peering, private endpoints, gateways, and cloud security controls.
• Familiarity with enterprise network monitoring and diagnostic technologies such as SNMP, NetFlow/sFlow, Wireshar