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Firewall Engineer
Idaho Falls or Butte or Fort Collins
OnsiteFull Time, Temporary
2+ YOEBachelor's degree, 2 years' experience (or equivalent). Implement IPv4/IPv6 on Palo Alto firewalls using Palo Alto Panorama; build interfaces and rulesets; validate and troubleshoot firewall traffic. Must be U.S. citizen.
Palo Alto Panorama, Palo Alto firewalls, IPv4, IPv6
1mo
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Sr Principal Network Engineer
Aurora, Colorado, United States
$129k-$194k/yr OnsiteFull Time
8+ YOEBachelor's in STEM with 8+ years or Master’s with 6+ years; TS/SCI with full-scope polygraph; Security+ certified; 20% travel; experience with WAN/LAN, routers, switches, firewalls, load balancers; engineering and design of network systems.
Cisco routers, Cisco switches, firewalls, load balancers, Linux, Windows, COMSEC equipment
1mo
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Senior Systems Engineer – Security Integration
Aurora, Colorado, United States
$152k-$205k/yr OnsiteFull Time
6+ YOEBachelor's in a technical field (or equivalent experience), 6+ years systems/integration/security engineering experience, active TS/SCI with Full Scope Polygraph, experience with privileged-user implementation, firewalls and logging controls, strong communication skills.
firewalls, audit logging, filtering technologies, cross-domain technologies
1mo
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Sr Principal Network Engineer - Active Polygraph Required
Aurora, Colorado, United States
$129k-$194k/yr OnsiteFull Time
8+ YOEActive TS/SCI with adjudicated full-scope polygraph, Security+ certification, 6–8+ years relevant network engineering experience (varies by degree), WAN expertise, and experience with routers, switches, firewalls, and load balancers.
Cisco, COMSEC, Linux, Microsoft Windows, routers, switches, firewalls, load balancers
2w
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Senior Staff / Senior Network Engineer
Boulder, Colorado, United States
$145k-$204k/yr OnsiteFull Time
6+ YOE6+ years network engineering experience, data center spine-leaf expertise, strong TCP/IP and routing (BGP/OSPF), WAN/LAN/firewall/VPN and SAN knowledge, Linux/Windows/VMware proficiency, ability to obtain DoD clearance.
Amazon Web Services, Microsoft Azure, SolarWinds, Cisco IOS, Linux, Windows, VMware, TACACS, Radius, Brocade
1w
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IT Security Engineer III
Niles or Fort Collins or Rockford
$105k-$168k/yr HybridFull Time
Experienced network security engineer with deep firewall expertise, VPN/SASE/NAC knowledge, log analysis ability, and strong collaboration and problem-solving skills.
firewall, VPN, SASE, NAC
1mo
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Power Systems Automation Engineer
Lakewood or Fairview Heights or Boerne
$84k-$144k/yr OnsiteFull Time
3+ YOEBachelor's in Electrical Engineering or Computer Science; 3+ years in power systems automation and communication; experience with utility/industrial power systems, SCADA and protocols.
SCADA, DNP3, Modbus, IEC 61850, Ethernet/IP, OPC UA, RTUs, RTACs, IEDs, SEL Relays, PLC, HMI, Serial Communications, Ethernet, Firewalls, Security Gateways, Terminal Servers, Cellular Routers, Managed Switches, SDN, IEC 61131-3, Structured Text, Wireshark
2w
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Network Engineer
Denver, Colorado, United States
$80k-$100k/yr OnsiteFull Time
Experience configuring and troubleshooting switches, routers, firewalls and access points; knowledge of OSPF, BGP, VLANs, TCP/IP, DHCP, DNS, NAT; strong problem-solving and documentation skills.
Ethernet, TCP, IP, VLANs, OSPF, BGP, DHCP, DNS, NAT, Switches, Routers, Firewalls, Wireless access points
2w
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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
3w
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Cybersecurity Engineer
Denver or United States
$80k-$120k/yr RemoteFull Time
Hands-on experience architecting, implementing, and managing security, network, and cloud technologies; experience with SIEM, EDR/MDR, firewalls/IPS/IDS; cloud platform security (Microsoft Azure, AWS, GCP, Microsoft 365); scripting/automation (PowerShell, Bash, Python).
Apollo Aegis, firewalls, IPS/IDS, SIEM, EDR/MDR, Microsoft 365, Microsoft Azure, AWS, GCP, PowerShell, Bash, Python, Fortinet, Sophos, Palo Alto, Cisco, Stellar Cyber, Splunk, LogRhythm, Elastic, Microsoft Azure Sentinel, Tenable, Sevco, Microsoft Entra ID, Google Workspace, SSO, MFA
2w
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Forward Deployed Engineer
Washington, DC or Raleigh or Durham or Chapel Hill or Denver or Colorado Springs or Dallas or Fort Worth
$105k-$141k/yr RemoteFull Time
3+ YOEDoD TS/SCI eligibility required, U.S. citizenship, reside near approved hubs; 3+ years in systems deployment/operations in regulated environments; Linux, Kubernetes, Helm, cloud (AWS/Azure/GCP), networking, CI/CD, automation (Go/Rust/Python/Bash), and client-facing troubleshooting experience.
Linux, Ubuntu, CentOS, RedHat, Kubernetes, Helm, AWS, Azure, GCP, CI/CD, VPNs, VLANs, firewalls, Go, Rust, Python, Bash, Prometheus, Grafana, Talos Linux, Docker, Istio, Git, GitLab, Terraform, FedRAMP, NIST
1mo
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Supervisor Network Engineer
Cedar Rapids or Denver or Philadelphia
$109k-$140k/yr HybridFull Time
5+ YOE1+ MgmtBachelor's in CS/IS or equivalent, 5+ years enterprise network engineering, 1+ years leading others, experience with LAN/WAN, routing/switching, wireless, firewalls, load balancers, circuit/vendor management, and change/incident processes.
3w
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Network Engineer
Downers Grove or Chicago or Springfield or Phoenix or Lansing or Grand Rapids or Milwaukee or Denver
$80k-$100k/yr HybridFull Time
CCNP-level routing and switching expertise, enterprise network engineering experience, strong knowledge of BGP/OSPF/EIGRP/VLANs/STP, hands-on with F5, DNS, DHCP and firewalls, troubleshooting, mentoring, valid driver's license and vehicle insurance, legally authorized to work in the US.
BGP, OSPF, EIGRP, VLAN, STP, DNS, DHCP, F5, Cisco, VMware, Microsoft
1mo
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Enterprise Network Engineer III
Denver or Charleston or Huntsville or Sanford or Augusta or Livonia or Montgomery or Panama City or Pinellas Park or Madison Heights
$125k/yr HybridFull Time
4+ YOE4+ years of enterprise network engineering; LAN/WAN, routers, switches, firewalls; OSFP ISIS BGP MPLS SR; Bachelor’s in IT/CS or equivalent
Microsoft Office Suite, ServiceNow, Lucidchart, Microsoft Visio, Omnigraffle, Workday HCM, NetSuite
3w
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Senior Sales Engineer, Majors - Colorado
Denver or Colorado
$170k-$221k/yr RemoteFull Time
7+ YOE7+ years as a sales engineer or network systems integrator, Bachelor's in Computer Science or equivalent experience, strong networking and cybersecurity fundamentals (TCP/IP, DNS, routing, VPN, firewalls).
2w
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Network Engineer
Highlands Ranch, Colorado, United States
$99k-$116k/yr HybridFull Time
2+ YOE2+ years networking experience, bachelor\u0002s or equivalent, experience with routing/switching, firewalls, wireless, documentation, and on-call support; CCNA or CompTIA Network+ preferred.
Cisco, Ruckus, Palo Alto NGFW, Panorama, F5 BIG-IP, Arista, LogicMonitor, NetBox, Ansible, ServiceNow, Zscaler, Microsoft Azure
3w
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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
3d
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IT Engineer - Network & Security
Naperville or Denver
$120k-$130k/yr HybridFull Time
3+ YOE3+ years in network/security or infrastructure engineering; SASE/firewall and cloud experience; EDR/SIEM/ITSM familiarity; ability to lift 30 lbs; occasional travel and rotating on-call duties.
SASE, Fortinet, Palo Alto, Netskope, Zscaler, EDR, SIEM, ITSM, Windows Server
2mo
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Network Engineer
Annapolis Junction or Aurora
$72-$111/hr OnsiteFull Time
8+ YOE8+ years as a Network Engineer; TCP/IP, DNS/DHCP, SNMP, VPN; configure/manage devices; LAN/WAN/cloud; security; monitoring tools; TS/SCI with polygraph; HS diploma or GED.
Cisco hardware, SolarWinds, Wireshark, Nagios, Firewalls, IDS/IPS, VPN, Encryption
2w
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Presales Systems Engineer - SASE
Durham or Denver or Fort Collins
$121k-$284k/yr RemoteFull Time
4+ YOE4+ years in technical presales, sales engineering, or solution architecture in networking/security/cloud; hands-on SASE/SSE/Zero Trust/SD‑WAN experience; firewall and networking fundamentals; public cloud familiarity; strong communication and demo skills.
HPE Aruba Networking, EdgeConnect, Aruba Central, ClearPass, SRX, AWS, Azure, Google Cloud, SD‑WAN, ZTNA, SWG, CASB, DEM
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