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135 network security engineer jobs at 86 companies in Vacaville, CA

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Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
Help us #BeatIndeed & #BeatLinkedIn
4w
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Network Security Engineer
San Francisco or United States
HybridFull Time
Kargo
Kargo: Automates warehouse loading docks using computer vision sensor towers.
3+ YOE3+ years network security experience; strong networking knowledge (TCP/IP, DNS, DHCP, VPN, routing, switching); hands-on with firewalls, endpoint protection, vulnerability management; experience securing AWS or Google Cloud Platform; Bachelor’s in related field; security certifications preferred.
TCP/IP, DNS, DHCP, VPN, routing, switching, firewalls, endpoint protection, vulnerability management tools, AWS, Google Cloud Platform, WireGuards, Tailscale, SOC 2, ISO 27001, NIST
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1d
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Senior Network Security Engineer
Alameda, California, United States
$146k-$220k/yr OnsiteFull Time
Penumbra
PenumbraNYSE: PEN: Designs and manufactures medical devices for vascular conditions.
10+ YOE10+ years network/security engineering experience, 5+ years cloud security (Azure,AWS,GCP) and network security; strong knowledge of firewalls, SIEM, VPN, identity protocols, routing, and security architecture. Bachelor's degree or equivalent.
Azure, AWS, Google Cloud Platform, Palo Alto Firewalls, Cisco ISE, IPS, CASB, VPN, SAML, OIDC, NAC 802.1X, SIEM, SOAR, Radius, TACACS+, OSPF, BGP, ISIS, SDN, Microsoft Word, Microsoft Excel, Microsoft Visio, Microsoft PowerPoint
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3mo
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Network Security Engineer
San Francisco or Seattle
$180k-$220k/yr HybridFull Time
Lightning AI
Lightning AI: Unified platform to build, train, and deploy AI models.
Design, implement, and maintain secure network systems; perform threat assessment, monitoring, and compliance.
Firewalls, VPNs, IDS/IPS, SIEM, Nessus, Qualys, Endpoint security, Palo Alto, Cisco ASA, Fortinet, Splunk, QRadar
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5d
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Network Security Engineer
Austin or New York City or San Francisco or Seattle
$242k-$284k/yr OnsiteFull Time
Fluidstack
Fluidstack: Provides high-performance cloud GPU infrastructure for AI development.
Experience securing production networks at scale, packet analysis, IT/OT segmentation, deploying NDR/flow detection, infrastructure-as-code for firewall rules, and familiarity with OT/ICS, BGP, Zeek or Suricata.
Zeek, Suricata, BGP, NDR
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2mo
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Senior Staff Security Engineer - Network Security
Denver or San Francisco or New York City or San Jose
$210k-$270k/yr HybridFull Time
Gusto
Gusto: Cloud-based payroll and HR software for small businesses.
10+ YOE10+ years in security engineering; Cloudflare WAF/DDoS/Zero Trust; Terraform/Crossplane; AWS networking; incident response; AI-native workflows; security certifications.
Cloudflare, Terraform, Crossplane, AWS, CloudFront, WAF, DDoS, Zero Trust, Panther, Wiz, CrowdStrike, Claude Code, MCP-driven tooling, LLM automations
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2w
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Information Security Network / Proxy Engineer
Folsom, California, United States
$105k-$207k/yr HybridFull Time
Intel
IntelNasdaq: INTC: Designs and manufactures microprocessors and semiconductor components.
4+ YOEDesign, implement, and manage proxy and security systems; automation and DevOps for security; experience with network security, vulnerability mitigation, and CI/CD lifecycle management.
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2mo
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NETWORK ENGINEER
Brisbane, California, United States
OnsiteFull Time
InfoImage
InfoImage: Provides statement processing, printing, and digital delivery services.
5+ YOE5+ years as Network Engineer; Palo Alto and Fortinet firewalls; Dell and Cisco switches; VPNs; network security.
Palo Alto Firewall, Fortinet Firewall, Dell Switches, Cisco Switches, VPN, VLAN, STP, QoS
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3mo
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Staff Network Security Engineer (Information Security) - US Citizen
Boston or San Francisco
$128k-$207k/yr OnsiteFull Time
Palo Alto Networks
Palo Alto NetworksNASDAQ: PANW: Provides enterprise-grade network, cloud, and endpoint security software.
5+ YOE5–8 years in network/infrastructure security; 2+ years managing enterprise firewalls; 2+ years securing cloud environments; FedRAMP/NIST 800-53 familiarity; Python/Go scripting; REST APIs; IaC (Terraform); strong IP networking.
Python, Go, Terraform, REST APIs, SOAR, Infrastructure-as-Code, AWS, GCP, Azure
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1mo
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Network Engineer
McLean or Tampa or New York City or San Francisco or Los Angeles or Irvine or Washington
$76k-$141k/yr HybridFull Time
Thomson Reuters
Thomson ReutersNASDAQ: TRI: Provides professional software, data, and news services globally.
5+ YOEBachelor's or equivalent experience, 5+ years network engineering, experience with AWS networking, Cisco and Palo Alto platforms, VMware, container networking, automation (Terraform, Ansible), scripting (PowerShell, Linux shell), monitoring (Nagios, Splunk), and ability to obtain U.S. national security clearance; U.S. citizenship required.
AWS, Transit Gateway, VPCs, Route53, Terraform, Ansible, GitHub, Nexus NX-OS, Catalyst IOS, Firepower FTD, FMC, PAN-OS, VMware vSphere, LACP, IPsec, IKEv2, ZTNA, SDP, Nagios, Splunk, Linux, Apache, Tomcat, PowerShell, Linux shell, SOC2, STIG, NIST
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2d
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Network Engineer - San Diego, CA
San Diego or Cordova or Chula Vista or Thomas Circle or Phoenix or Rancho Fullerton Mobile Home Estates or Chico or Ramona or Riverside or San Bernardino or Santa Ana or Santa Maria
$114k-$191k/yr FieldFull Time
Serco
SercoLondon Stock Exchange: SRP: Provides professional outsourcing services to governments worldwide.
8+ YOE8+ years network engineering experience, ability to obtain/maintain DoD Secret clearance, DoD 8570 certification (Security+ CE or higher), Juniper/Cisco certifications, hands-on experience with Junos/Aruba/Cisco, bachelors or HS+12 years.
Cisco, Aruba, Antaira, Cambium, Juniper, Junos, IPSec, BGP, OSPF, TCP/IP, VLANs, QoS, Firepower, ASA
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1w
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Network Engineer
Woodland or Burlington
$110k-$125k/yr OnsiteFull Time
Sakata Seed America
Sakata Seed AmericaTokyo Stock Exchange: 1377: Breeding and distributing high-quality vegetable and flower seeds.
5+ YOEManage and maintain enterprise network and infrastructure, ensure security and availability, support projects, document systems, and troubleshoot issues.
Microsoft Windows Server, Microsoft Terminal Server, Windows 10/11, Microsoft Exchange, Microsoft Office 365, Microsoft Active Directory, Microsoft Entra, Microsoft Group Policies, VMware, Microsoft Hyper V, DHCP, DNS, TCP/IP, VPNs, SIEM, MDM
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1d
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Senior Security Engineer, Enterprise Security
San Francisco, California, United States
$129k-$180k/yr HybridFull Time
Braze
BrazeNASDAQ: BRZE: Platform for personalized customer engagement and cross-channel messaging.
5+ YOE5+ years security engineering experience with enterprise/network/endpoint focus; hands-on with SaaS, IAM, EDR, forensics, and incident response; strong communication and organizational skills.
Crowdstrike EDR, SIEM, BrazeAI, IAM, SSO, MDM
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4w
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Security Engineer, Infrastructure Security
San Francisco, California, United States
$200k-$325k/yr OnsiteFull Time
Serval
Serval: AI platform for automating IT and enterprise service workflows.
10+ YOE10+ years in cybersecurity with expertise in endpoint security, device trust, macOS fleet management, SaaS security posture, workforce identity (SSO/MFA/OAuth), 802.1x network access, leadership, and automation/scripting.
MDM, macOS, 802.1x, OAuth, SSO, MFA, ACLs
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2d
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Network Software Test Engineer III
Roseville, California, United States
$121k-$243k/yr HybridFull Time
Hewlett Packard Enterprise
Hewlett Packard EnterpriseNYSE: HPE: Provides global edge-to-cloud technology solutions and IT infrastructure services.
4+ YOE4+ years in network QA or engineering, BS/MS in related field, strong Python and pytest automation skills, CI/CD and Git experience, networking protocol and security testing expertise, virtualization and testbed experience.
Python, pytest, CI/CD, Jenkins, GitHub Actions, Git, Wireshark, tcpdump, VMware, Docker, Kubernetes, GNS3, Mininet, EVE-NG, AI models, LLMs
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2d
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Network Software Test Engineer III
Roseville, California, United States
$121k-$243k/yr HybridFull Time
Hewlett Packard Enterprise
Hewlett Packard EnterpriseNYSE: HPE: Providing global edge-to-cloud infrastructure and IT solutions for businesses.
4+ YOE4+ years in network QA or security-focused testing, strong Python automation skills, networking protocol knowledge, security testing experience, familiarity with virtualization and network emulation, and BS/MS in a related field.
Python, pytest, Jenkins, GitHub Actions, Git, Wireshark, tcpdump, VMware, Docker, Kubernetes, GNS3, Mininet, EVE-NG, LLMs
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2d
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Network Software Test Engineer III
Roseville, California, United States
$121k-$243k/yr HybridFull Time
Hewlett Packard Enterprise
Hewlett Packard EnterpriseNYSE: HPE: Provides edge-to-cloud IT infrastructure and platform services.
4+ YOE4+ years in network QA or engineering, BS/MS in related field preferred, strong Python and pytest automation skills, networking protocol and security testing experience, familiarity with CI/CD and AI/LLM-driven testing.
Python, pytest, CI/CD, Jenkins, GitHub Actions, Git, Wireshark, tcpdump, VMware, Docker, Kubernetes, GNS3, Mininet, EVE‑NG, AI models, LLMs
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1mo
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Senior Network & Site Reliability Engineer
San Francisco, California, United States
$210k-$240k/yr OnsiteFull Time
Alembic
Alembic: AI-powered marketing attribution and revenue forecasting platform.
8+ YOE8+ years in network or infrastructure engineering (5+ years datacenter ops); strong network security and architecture skills; hands-on with BGP, QoS, MPLS, IPsec, EVPN/VXLAN, ECMP; IaC (Ansible, Terraform, Nornir); NetBox/Infoblox; Kubernetes networking; Linux; monitoring stacks; Python/Bash.
NVIDIA DGX SuperPOD, Grace Blackwell, BGP, VPNs, WAN, QoS, MPLS, IPsec, EVPN, VXLAN, ECMP, Ansible, Terraform, Nornir, NetBox, Infoblox, Kubernetes, Prometheus, Grafana, Datadog, ELK, OpenTelemetry, Python, Bash, Cumulus Linux, InfiniBand, Spectrum-X, BlueField, Spark, Airflow, Kafka, NFS, LustreFS, iSCSI, Linux
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3mo
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Network Engineer Tier 3
El Segundo or Colorado Springs or Springfield or Offutt AFB or Denver or Australia or Las Cruces or Sacramento or Cape Canaveral or Pearl Harbor or John C. Stennis Space Center or Chantilly or Annapolis Junction or Kirtland AFB or Vandenberg Space Force Base or Wright Patterson AFB or Piti or San Antonio or United Kingdom
$105k-$231k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
10+ YOETS/SCI with polygraph required, 10+ years' network engineering experience, Bachelor's degree or equivalent, advanced knowledge of TCP/IP/OSPF/BGP/MPLS, experience with Cisco/Juniper, network monitoring, security principles, and leadership skills.
TCP/IP, OSPF, BGP, MPLS, Cisco, Juniper, ITIL
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1mo
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Senior Network Engineer
San Francisco, California, United States
$130k-$160k/yr OnsiteFull Time
EOS IT Solutions
EOS IT Solutions: Provides global IT collaboration, managed services, and logistics solutions.
5+ YOE5+ years with corporate/campus networks; strong routing/switching and WLAN/WAN/security knowledge (OSPF, BGP, STP, IPSEC); Cisco and Juniper experience; Cisco AnyConnect; automation, monitoring, and documentation skills; CCNA preferred.
OSPF, BGP, STP, IPSEC, VSS, 802.11(b/g/n), Cisco AnyConnect, WAPs, WLCs, ASAs, ISE, SRX Firewalls, Junos Space, Python, Ansible, Bash, Git, AWS, VMware
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1mo
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Security Engineer
Singapore or San Francisco
HybridFull Time
Menlo Research
Menlo Research: Building open-source humanoid robots and AI locomotion software.
5+ YOE5+ years as a software/security engineer; hands-on Linux and networking; IaC (Terraform/Helm/Ansible); Kubernetes; Python or Go; threat modeling and defining security for hybrid cloud and on-prem deployments.
Linux, Terraform, Helm, Ansible, Kubernetes, Python, Go
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