78 network security engineer jobs at 61 companies in Englewood, CO
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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
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
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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)
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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
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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
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Principal Network Engineer
Denver, Colorado, United States
$160k-$180k/yr OnsiteFull Time
15+ YOE15+ years network engineering; 5+ years in service provider functions; routing/switching expertise; security tools experience; minimal travel; leads technical actions.
Cisco, Juniper, BGP, OSPF, EIGRP, Cisco ISE, Palo Alto
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Network Engineer / Level 3
Boulder, Colorado, United States
$86k-$151k/yr OnsiteFull Time
3+ YOE3+ years network engineering experience, BS degree typical, strong Layer 2/3 (VLAN, OSPF, BGP) and Cisco/Juniper skills, Security+ CE (or IAT Level II) required/obtainable, active Secret and ability to obtain TS/SCI.
OSI, TCP/IP, VLAN, OSPF, BGP, Cisco, Juniper, Cisco ACI, Juniper Apstra, Ansible, VMware, vSAN, Microsoft PowerPoint, Microsoft Visio, DISA STIGs, COMSEC, TACLANE
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Network Engineer - Level 2 or 3
Aurora, Colorado, United States
$83k-$155k/yr OnsiteFull Time
2+ YOEActive Top Secret/SCI with CI or full scope polygraph, CompTIA Security+ (or equivalent), multiple years network engineering experience with switching, routing, firewalls, cabling on CISCO/Juniper, and ability to support enterprise/classified networks.
CISCO, Juniper
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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
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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
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Voice Network Engineer II
Lone Tree or Sparks or Englewood
$82k-$113k/yr OnsiteFull Time
2+ YOEBachelor's or equivalent experience, 2+ years in networking, experience with CUCM, MS Teams, SIP/SBC, TCP/IP, DNS, DHCP, SD‑WAN; CCNA/CCNP preferred; ability to obtain Secret security clearance; occasional travel and 25 lb lifting.
Cisco Unified Communications Manager (CUCM), MS Teams, Teams Phone, Webex, SIP trunking, Session Border Controllers (SBC), VoIP QoS, RTP/RTCP, TCP/IP, DNS, DHCP, SD‑WAN, Python, Ansible, AI
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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
2d
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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)
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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
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Sr. Network Systems Engineer
Denver or Littleton
$182k-$254k/yr OnsiteFull Time
Blue Origin: Develops reusable rockets and systems for human spaceflight.
10+ YOEDesign and verify FPGA firmware for secure communications; Bachelor's in EE/CE; 10+ years FPGA firmware experience; proficiency in VHDL/Verilog/SystemVerilog and FPGA toolchains; ability to obtain U.S. government security clearance.
VHDL, Verilog, SystemVerilog, Xilinx Vivado, Intel Quartus, AXI, PCIe, SpaceWire, Ethernet, DO-254
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
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Program Network Engineer - Colorado
Aurora or Meridian or Lone Tree
$150k-$200k/yr OnsiteFull Time
8+ YOEActive Top Secret/SCI clearance,8+ years IT/networking experience, DoD 8570 IAT Level 2 (or obtain within 2 months), ability to triage issues, configure LANs, and work across multiple security domains.
Cisco, Juniper, Palo Alto, Red Hat, Microsoft, Windows 10, Terminal Services, Active Directory, RHEL 8, RHEL 9, Ubuntu, SAP
3mo
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Senior IT Security Engineer
Linthicum or Phoenix or Denver or Tampa or Cicero
$92k-$120k/yr HybridFull Time
5+ YOEBachelor's degree or equivalent experience, 5+ years in IT security, CISSP, networking and security expertise, Windows and Linux administration, cloud security, scripting, analytical, communication, and collaboration skills.
SIEM, PAM, ZTN, IdP, IAM, CSPM, DLP, CIEM, DevSecOps, SSDLC, AWS, Azure, Windows, Linux, HCL, YAML, JSON, PowerShell, Python, Go, Shell
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Tier III – Technical Support & Network Engineer (EMEA)
Denver, Colorado, United States
$100k-$120k/yr OnsiteFull Time
4+ YOE4+ years in technical support/engineering; strong troubleshooting; MSP/MSSP tooling; networking, firewalls, VPNs; Windows/macOS/Linux; Azure/M365; security concepts.
RMM, PSA, Microsoft 365, Azure, Windows, Linux, Network Security
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Security Engineer (Denver, CO) - Heartland (Remote)
Denver, Colorado, United States
RemoteFull Time
Hands-on network security experience with firewalls and secure access; troubleshooting networking (routing, NAT, VPN); OS proficiency (Windows, macOS, Linux); strong communication and advisory skills; pre-sales/client-facing experience preferred.
Palo Alto Networks, Checkpoint, Fortinet, CrowdStrike, SentinelOne, Zscaler, Microsoft Defender, Carbon Black, Splunk, Cisco, Greenhouse, Zoom Scheduler
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