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111 principal network engineer jobs at 53 companies in San Francisco, CA

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Principal Network Engineer
Austin or Milpitas
OnsiteFull Time
Graphcore
Graphcore: Produces specialized processors for artificial intelligence workloads.
9+ YOE9+ years network engineering; 3+ years in AI/hyperscale datacenters; RDMA/InfiniBand; lossless networking; 400G/800G; BGP/OSPF; VXLAN; NetDevOps; scripting.
RDMA, ROCEv2, InfiniBand, BGP, OSPF, VXLAN, Terraform, Ansible, Python, Go, JSON, Broadcom, Arista, Cisco, Pensando
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Principal Network Engineer
Seattle or Santa Clara or Austin or United States
$109k-$223k/yr OnsiteFull Time
Oracle
OracleNYSE: ORCL: Provides cloud infrastructure and enterprise software for global businesses.
6+ YOE6+ years network engineering experience with RDMA/RoCE fabrics, BGP, network automation and Python; strong troubleshooting, root-cause analysis, design, scripting, and leadership for large-scale cloud networks.
BGP, Python, RDMA, RoCE, Oracle Cloud Infrastructure (OCI)
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Principal Network Engineer
Houston or New York City or San Francisco or Seattle
OnsiteFull Time
Nscale
Nscale: Vertically integrated AI infrastructure provider for high-performance computing.
10+ YOE10+ years in network engineering with deep HPC, AI, or hyperscale data center networking experience; expert Infiniband/RoCE, RDMA, BGP, OSPF, ECMP, and cross-layer troubleshooting skills.
InfiniBand, RoCE, RDMA, BGP, OSPF, ECMP, NVIDIA, Mellanox
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Principal Network Engineer
Sunnyvale, California, United States
$104k-$155k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Designs and manufactures advanced aerospace and defense systems.
1+ YOERequires active U.S. Secret clearance, experience designing/implementing/maintaining enterprise network infrastructure with Cisco/Juniper/Aruba, strong TCP/IP and LAN/WAN protocol knowledge, and multi-year network engineering experience.
Cisco Router, Cisco Switch, Cisco Wireless Technology, Aruba, Juniper, Palo Alto Firewalls, SD-WAN, Network Associates Sniffer, configuration management database (CMDB)
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Principal Network Engineer z/OS
Saint Paul or Atlanta or Cupertino or New York City or Chicago or Denver or Charlotte or Brookfield or Earth City
$120k-$141k/yr HybridFull Time
U.S. Bank
U.S. BankNYSE: USB: Provider of personal, business, and institutional financial services.
7+ YOE7+ years IT experience managing mainframe network services; expertise with z/OS Communications Server, VTAM, TCP/IP, TN3270, GDPS, TPX, Connect:Direct, SMP/E; associate degree or equivalent; on-call support.
IBM z/OS Communications Server, VTAM, TCP/IP, TN3270, GDPS, TPX Session Manager, Connect:Direct, FTP, SFTP, FTPS, FTP-AT/TLS, SMP/E
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Principal Network Architect
San Francisco or Sunnyvale or Bellevue or Abilene
$265k-$310k/yr OnsiteFull Time
Crusoe
Crusoe: Provides energy-efficient cloud infrastructure powered by stranded and renewable energy.
12+ YOE12+ years network engineering/architecture experience (5+ years leadership), hyperscale data center networking, expert routing (BGP, EVPN/VXLAN, OSPF), SDN, Kubernetes networking, automation (Terraform/Ansible/Nornir), and strong communication skills.
RoCEv2, InfiniBand, OpenDaylight, ONOS, Apstra, Contrail, NETCONF, YANG, RESTCONF, gNMI, gRPC, Calico, Cilium, Flannel, Multus, Git, CI/CD, Terraform, Ansible, Nornir, SONiC, P4, Batfish, Minesweeper, NetBox, FRR, eBPF, BGP, EVPN, VXLAN, OSPF, ECMP, BFD, RDMA
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Principal AI Network Hardware Systems Engineer
Redmond or Mountain View or Hillsboro
$143k-$275k/yr HybridFull Time
Microsoft
MicrosoftNASDAQ: MSFT: Develops software, services, devices, and cloud computing solutions.
7+ YOERequires a master's degree and 7+ years, or bachelor's degree and 8+ years, in technical engineering; 8+ years in networking hardware, GPU systems, and high-speed interface architecture. Security screening required.
TCP/IP, UDP, RDMA, RoCE, ECN, PFC, DCQCN, SONiC, Linux, Microsoft Azure, Ultra Ethernet, Ethernet, SmartNICs, DPUs, NICs, GPU, SerDes, PHYs, MAIA, IP, QoS, Telemetry
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Principal Engineer, Network Protocol Architect
San Jose, California, United States
$180k-$250k/yr OnsiteFull Time
Ayar Labs
Ayar Labs: Develops optical interconnect technology for high-speed data movement.
B.S. in Computer/Electrical Engineering; experience with memory semantic fabrics and protocols (AXI, CHI, UALink, ESUN, UCIe, PCI-SIG, Ethernet); strong Python skills; SSO participation and customer-facing communication.
AXI, CHI, UALink, ESUN, Ethernet (802.3dj), UCIe, PCI-SIG, OCI-MSA, Python, Antigravity, Claude, Amazon AWS, Google Cloud, OCP, OIF, IEEE 802.3
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Sr. Principal Software Engineer - Network Security - PanOS
Santa Clara or San Francisco or San Jose
$170k-$277k/yr OnsiteFull Time
Palo Alto Networks
Palo Alto NetworksNASDAQ: PANW: Provides enterprise-grade network, cloud, and endpoint security software.
12+ YOEBachelor's or higher in CS (or equivalent),12+ years engineering experience with senior technical leadership, strong C/C++ on Unix, networking and security knowledge, mentoring and performance optimization experience.
C, C++, Unix, TLS
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Principal Fabric/Network Architect
Austin or Sunnyvale or San Mateo
$250k-$300k/yr OnsiteFull Time
Neurophos
Neurophos: Develops high-performance photonic processors for AI inference acceleration.
10+ YOERequires BS, MS, or PhD in a relevant field and 10+ years in datacenter networking architecture, including production RDMA. Expertise in Linux networking, PCIe, DMA, NICs, and architecture specifications.
Linux, VFIO, DPDK, libfabric, IOMMU, IOVA, PCIe, RoCEv2, Ultra Ethernet Transport (UET), DMA, HBM, NCCL, RCCL
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Sr. Principal Engineer
Fremont, California, United States
$179k-$257k/yr OnsiteFull Time
Bloom Energy
Bloom EnergyNYSE: BE: Manufactures solid oxide fuel cell systems for onsite power.
15+ YOESenior-level engineering position focused on network engineering and security; extensive hands-on experience with Cisco tech, WAN/LAN, and project leadership.
Cisco, VPN, SDWAN, Python, Ansible
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Senior/Principal Solutions Architect / Network Engineer - Special Programs Operations, Onsite
Livermore, California, United States
$140k-$281k/yr OnsiteFull Time
Sandia National Laboratories
Sandia National Laboratories: Federal research and development laboratory for national security.
5+ YOEBachelor's in IT or related field; 5+ years in enterprise networking; cloud networking experience; ability to obtain DOE Q/SCI clearance; willing to be onsite in Livermore, CA; on-call 24/7/365.
Cloud Networking, AWS, Azure, Google Cloud, Cisco hardware, SolarWinds, Splunk
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Senior Principal Engineer, Hardware Application Engineering — Board & System Design
Santa Clara, California, United States
$178k-$266k/yr OnsiteFull Time
Marvell
MarvellNASDAQ: MRVL: Designs and produces semiconductor solutions for data infrastructure.
15+ YOE15+ years hardware design experience for high-speed networking/compute systems; deep board/system design, SI/PI, power and thermal expertise; PhD/Masters/Bachelors in relevant field; strong customer-facing skills.
Cadence (Allegro/Sigrity), Mentor/Siemens (Xpedition/HyperLynx)
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Principal Hardware Engineer – TeraWave Network Switch Platform
Seattle or Los Angeles or Reston or San Francisco
$183k-$256k/yr HybridFull Time
Blue Origin
Blue Origin: Develops reusable rockets and systems for human spaceflight.
10+ YOEBachelor's in Electrical or Computer Engineering; 10+ years hardware design; multi-layer PCB with high-speed interfaces; experience with Ethernet switch hardware and NPUs; power, EMI/PI and signaling expertise; BSP integration and peripheral bring-up.
Altium, Cadence, SPICE, BSP, Ethernet, NPU, PHY, SerDes, I2C, SPI, UART, CAN
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Senior/Principal Solutions Architect / Network Engineer - Special Programs Operations, Onsite
Livermore, California, United States
$140k-$281k/yr OnsiteFull Time
Sandia National Laboratories
Sandia National Laboratories: Conducts science and engineering research for national security.
5+ YOEBachelor's in IT or equivalent with 5+ years experience, enterprise and cloud networking expertise, ability to obtain DOE Q and SCI clearances, CompTIA Security+ (or equivalent), on-call availability for 24/7 mission support.
AWS, Oracle, Azure, Google Cloud, Cisco, SolarWinds, Splunk
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Principal Software Engineer SD-WAN
San Jose, California, United States
$156k-$315k/yr OnsiteFull Time
Hewlett Packard Enterprise
Hewlett Packard EnterpriseNYSE: HPE: Provides global edge-to-cloud technology solutions and IT infrastructure services.
10+ YOE10+ years software engineering experience in secure networking, Linux kernel and embedded systems; expertise in IPSec/IKEv2, high-performance networking, cryptography, and system-level C/C++ development.
DPDK, VPP, eBPF, OpenSSL, Intel QAT, AES-NI, StrongSwan, Libreswan, OpenVPN, WireGuard, IPSec, IKEv2, TLS, SSL, Linux, C, C++
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Principal Software Engineer - Rack Scale Systems Infrastructure
Santa Clara, California, United States
$272k-$431k/yr OnsiteFull Time
NVIDIA
NVIDIANASDAQ: NVDA: Designs GPU-accelerated computing and artificial intelligence hardware.
15+ YOE BS or MS in Computer Science/Engineering; 15+ years in systems software, distributed systems, or infrastructure engineering; Go/C++, or Rust; Kubernetes; data center networking; open source; security; mentoring.
Go, C++, Rust, Kubernetes, Linux, Redfish, IPMI
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Principal Embedded Software Developer
Sunnyvale, California, United States
$170k-$210k/yr OnsiteFull Time
Fortinet
FortinetNASDAQ: FTNT: Develops and sells cybersecurity software and network security appliances.
10+ YOEMinimum 10 years in networking, embedded software; BS in Computer Science or Electrical Engineering; MS preferred; strong C/C++ in Unix/Linux; experience with L2/L3 features, TCP/IP, and various ASICs; US citizenship required.
C/C++, Unix/Linux, ARM, PPC, x86, Open vSwitch, Shell, Python, Ruby
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Senior Principal Software Engineer
San Jose, California, United States
$155k-$243k/yr OnsiteFull Time
Celestica
CelesticaNYSE: CLS: Provides design, manufacturing, and supply chain solutions for electronics.
15+ YOELead design and scaling of test infrastructure, CI/CD, and AI/LLM-driven developer tools; 15+ years engineering experience; Master’s in CS/CE or equivalent; proficiency in Python, Bash, CI/CD, Docker, Jenkins, and networking domains.
Python, Bash, Perl, TCL, Windsurf, Claude Code, Ollama, LlamaIndex, Docker, Jenkins, Ansible, Zabbix, GitLab, GitHub, SONiC, Linux, iperf3, IXIA, Jira, Jira Align
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Principal Production Engineer
California or San Jose
$165k-$235k/yr HybridFull Time
Zscaler
ZscalerNASDAQ: ZS: Provides cloud-native cybersecurity solutions through zero trust architecture.
10+ YOE10+ years managing reliability, scalability, and availability for large-scale production services; programming in Python/Go/C/C++; strong networking, Linux/RHEL, incident management, on-call experience, and ITIL familiarity.
Python, Go, C/C++, AWS, GCP, Azure, Prometheus, Grafana, OpenTelemetry, Ansible, Terraform, Helm, Temporal, HAProxy, BGP, GRE, IPSec, DNS, Linux/RHEL, ITIL
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