155 network security jobs at 110 companies in Louisville, CO
2mo
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Lead Engineer, Network Security Platform
Birmingham or Bentonville or Phoenix or Tempe or Boulder or Denver or Hartford or Fort Lauderdale or Jacksonville or Miami or Orlando or Tallahassee or Tampa or Atlanta or Des Moines or Boise or Chicago or Indianapolis or Louisville or Baton Rouge or New Orleans or Shreveport or Baltimore or Detroit or Minneapolis or Kansas City or St. Louis or Jackson or Charlotte or Raleigh or Winston-Salem or Lincoln or Omaha or Montvale or Short Hills or Albuquerque or Albany or Buffalo or Rochester or Cincinnati or Cleveland or Columbus or Oklahoma City or Harrisburg or Philadelphia or Pittsburgh or Providence or Greenville or Knoxville or Memphis or Nashville or Austin or Dallas or Fort Worth or Houston or San Antonio or Salt Lake City or Ashburn or Richmond or Milwaukee or Virginia Beach
OnsiteFull Time
5+ YOERequires 5+ years of network security experience, Palo Alto and Zscaler expertise, GCP security engineering, Terraform or Ansible, and a high school diploma or GED; bachelor's degree preferred.
Zscaler, Google Cloud Platform (GCP), Palo Alto, Azure, Palo Alto firewalls, Strata, VM-Series, Panorama, Prisma Access, Terraform, Ansible, Cloud Armor, Zscaler Internet Access (ZIA), Zscaler Private Access (ZPA)
3mo
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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
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
3mo
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Network Engineer
Annapolis Junction or Aurora
$72-$111/hr OnsiteFull Time
8+ YOERequires 8+ years of network engineering experience, network protocols and devices expertise, network security knowledge, high school diploma or GED, and TS/SCI clearance with polygraph.
TCP/IP, HTTP, DNS, DHCP, SNMP, VPN, LAN, WAN, SolarWinds, Wireshark, Nagios, Cisco
2mo
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Network Engineer
Fort Collins, Colorado, United States
$116k-$131k/yr OnsiteFull Time
3+ YOECCNA or equivalent, CompTIA Security+, 3+ years as a network engineer, cloud networking experience (AWS or Microsoft Azure), proficiency with Wireshark and iPerf, ability to obtain US security clearance, and willingness to travel ~25%.
Wave Relay, Cloud Relay, Ethernet, MACsec, IPsec, VPN, EIGRP, OSPF, PIM, IGMP, Wireshark, iPerf, AWS, Microsoft Azure, UPS, CoTS, CVEs
2mo
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Systems Infrastructure & Network Security Operations Engineer
Spring or Fort Collins
$93k-$144k/yr OnsiteFull Time
6+ YOE6+ years networking and systems experience with zero-trust design, IaC and automation (Ansible, Terraform, Python), CI/CD for network assets, vulnerability management, cloud networking, and architecture governance; technical degree or equivalent experience.
Ansible, Python, Terraform, Git, Jenkins, GitLab CI, Nessus, Qualys, VMware vSphere, Proxmox, Linux, Windows, F5, InfoBlox, AWS VPC, Azure VNets, TOGAF, ArchiMate, OSPF, BGP, MPLS, VXLAN
2w
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Network Engineer 4
Centennial, Colorado, United States
$121k-$202k/yr OnsiteFull Time
6+ YOEDesign, implement, and optimize enterprise and launch network infrastructure; mentor engineers; expertise in routing, switching, security, cloud networking, and automation.
OSPF, BGP, Cisco ACI, Palo Alto, Cisco ASA, Firepower, Python, Ansible, PowerShell, Terraform, Azure, AWS, SolarWinds, NetFlow, Cisco ISE, SD-WAN
2w
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Sr. Network Engineer
Redwood City or San Diego or Denver
$100k-$140k/yr HybridFull Time
5+ YOEBachelor's degree or equivalent,5+ years network experience (preferably OT energy/data center),Azure networking, Palo Alto/Cisco experience, networking/security certifications, familiarity with NIST/ISA/IEC/NERC frameworks.
Microsoft Azure, Palo Alto Networks, Cisco, Dell Servers, Hyper-V, VMware, Kubernetes, Docker, SIEM, EPMS, BMS, NIST SP 800-82, ISA/IEC 62443, NERC CIP
1mo
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Senior Network Engineer
Denver, Colorado, United States
$104k-$166k/yr OnsiteFull Time
8+ YOE8+ years supporting enterprise network infrastructure; DISA STIG and secure federal experience; Cisco networking, routing/switching, VOIP, encryption, and troubleshooting skills; active TS/SCI or Q/SCI clearance.
Cisco, SolarWinds, OSPF, BGP, IPSec, VOIP
1w
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Senior Network Administrator
Denver, Colorado, United States
$125k-$146k/yr HybridFull Time
10+ YOEDesign, implement, and manage Cisco-based network infrastructure; 10+ years network administration experience; CCNP or 5+ yrs equivalent; strong TCP/IP, OSPF/BGP, security, Microsoft Terminal Services skills.
Cisco, Microsoft Terminal Services, Gateway Broker, RD Web
3mo
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Secure Network Engineer
Boulder, Colorado, United States
$150k/yr OnsiteFull Time
7+ YOE7+ years in secure networking, DoD/IC programs, MBSE, and compliance with DISA RMF/STIGs; TS/SCI preferred.
MBSE tools (Cameo, Rhapsody, MagicDraw)
3d
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Network Engineer / Principal Network Engineer (AHT)
Aurora, Colorado, United States
$83k-$155k/yr OnsiteFull Time
2+ YOEBachelor's degree in STEM with 2–5+ years of relevant experience or master's degree with 0–3+ years; active Top Secret clearance, Full Scope Polygraph, Security+ certification, networking expertise, and travel availability.
LAN, WAN, routers, switches, firewalls, load balancers, COMSEC, CISCO, Linux, Windows
4d
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Senior Network Engineer
Bengaluru or Broomfield or Belagavi
OnsiteFull Time
5+ YOERequires 5+ years in enterprise networking, expertise in architecture, routing, switching, wireless, security, Cisco, Aruba, and Fortinet, plus mandatory CCNA or CCNP certification.
Cisco, ArubaOS, FortiGate Next-Generation Firewalls, Ubiquiti UniFi, Wireshark, Fiddler, Nmap, Windows Server, Active Directory, DHCP, DNS, Aruba Controllers, Aruba Central, Azure, AWS, Python, Bash, VNet, VPC, Network Security Groups (NSGs), Security Groups, SD-WAN, Infrastructure as Code (IaC)
1mo
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Network Lead Engineer (IT)
Denver, Colorado, United States
$115k-$183k/yr RemoteFull Time
8+ YOE8+ years enterprise network engineering experience with 2+ years in a senior/lead capacity; expert routing/switching, cloud network integration, security, load balancing, IPAM and monitoring; strong communication skills.
Cisco, HP Synergy, Infoblox, PagerDuty, Micro Focus NNMi, Google GCP, AWS, Azure, Workday, ServiceNow, Illumio, Palo Alto Prisma
1mo
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Senior Network Engineer
Boulder, Colorado, United States
$96k-$136k/yr HybridFull Time
8+ YOE8+ years network engineering experience; 3+ years with Cisco ISE, Aruba, and Clearpass; hands-on Cisco routers/switches; Layer 2/3 expertise; firewall and Fortinet experience preferred; strong communication; bachelor's degree desirable; subject to government security investigation.
Cisco ISE, Aruba, Clearpass, Cisco routers and switches, Fortinet
1mo
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Sr Network Engineer - CCIE Contract 1
Denver or Fort Collins
$90k-$130k/yr OnsiteFull Time
5+ YOE5+ years enterprise network engineering experience, strong LAN/WAN/routing/switching knowledge, network security and hybrid cloud networking, vendor and contract management, bachelor's degree required.
Cisco
1w
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Network System Admin
Boulder, Colorado, United States
RemoteContract
3+ YOERequires 3–5 or more years of network systems administration experience, including routing, switching, troubleshooting, security, infrastructure, load balancing, VPNs, and cloud management.
TCP/IP, Virtual Private Networks (VPN), Wide Area Networks, Network Switches, Local Area Networks, Border Gateway Protocol, Dynamic Host Configuration Protocol (DHCP), Load Balancing, Proxy Servers, Open Shortest Path First (OSPF), Internet Protocol Security (IP SEC)
2d
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Sr Network Reliability Engineer
Los Angeles or Florida or Denver or Reston or El Segundo
$198k-$277k/yr OnsiteFull Time
Blue Origin: Develops reusable rockets and systems for human spaceflight.
8+ YOEBachelor’s degree or equivalent experience and 8+ years designing scalable network infrastructure. Requires networking, automation, security, multi-vendor configuration, communication skills, and U.S. work authorization.
TCP/IP, IPv4, IPv6, MPLS, BGP, OSPF, IS-IS, DHCP, DNS, NTP, Python, Go, Rust, C++, Juniper, JNCIS-ENT, JNCIS-DevOps, JNCIP, Palo Alto Networks, NIST SP 800-series, NIST SP 800-57, FIPS 140-2, FIPS 140-3, VPN, VLAN
1mo
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Network Engineer (TS/Q Clearance required)
Washington or Albuquerque or Germantown or Denver
$111k-$150k/yr OnsiteFull Time
12+ YOEUS citizen with 12+ years network engineering experience; expertise with Cisco routers/switches/firewalls, routing protocols (BGP, OSPF, EIGRP), and network security; DOE Q or TS clearance required; bachelor’s degree or equivalent.
Cisco Routers, Cisco Switches, Cisco Technologies, Network Firewalls, Juniper, Palo Alto, BGP, OSPF, EIGRP, STP, RSTP, VXLAN, LACP, Microsoft DNS, Unix BIND, DISA STIGs
2w
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Network WAN/LAN Engineer
Fort Collins, Colorado, United States
$40-$48/hr OnsiteContract
2+ YOEMinimum 2 years network engineering experience, hands-on Cisco WAN/LAN, Azure and cloud networking, routing/switching/VLANs/VPNs, network security, strong troubleshooting and customer service, valid driver’s license, US work authorization, willing to be on-call.
Cisco, Microsoft, Azure, Azure Fabric, VMware
2mo
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Digital Network Exploitation Analyst (DNEA) - Chantilly, VA
Chantilly or Fairfax or Aurora
$120k-$175k/yr OnsiteFull Time
10+ YOETop Secret with SCI eligibility and Polygraph; 10 yrs experience (no degree) or degrees with required years; network routing and security expertise; tools for signals analysis and exploitation.
Routing, Network Infrastructure, Vulnerability Analysis, Signals Analysis, Exploitation, Python, C++, Penetration Testing Tools