64 firewall jobs at 40 companies in Centennial, CO
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Senior Infrastructure Lead
Amarillo or Dallas or Houston or Lubbock or Denver or Oklahoma City or Albuquerque
$140k-$160k/yr RemoteFull Time
10+ YOE10+ years infrastructure engineering experience with Dell HCI, networking/Cisco firewalls, Windows/SQL Server, Azure, monitoring ownership, and strong troubleshooting and documentation skills.
Dell HCI, Cisco firewalls, Azure, Azure Monitor, Azure AD, Windows, SQL Server, site 24x7, Lan Sweeper, Manage Engine, Teramind, PagerDuty, Jira, Rapid 7, PowerShell, Python, Wazuh, Microsoft Office
1w
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Network Engineer
Denver, Colorado, United States
$80k-$100k/yr OnsiteFull Time
Proficient configuring and troubleshooting routers, switches, firewalls and access points; strong knowledge of OSPF, BGP, VLANs, TCP/IP, DHCP, DNS and VPN; strong documentation and communication skills.
OSPF, BGP, DHCP, DNS, NAT, Ethernet, TCP, IP, VLAN, routers, switches, firewalls, VPN
2w
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Technology Intern - University of Colorado
Boulder, Colorado, United States
$25/hr OnsitePart Time
1+ YOE1+ year supporting POS and tech systems, basic networking knowledge (firewalls, switches, wireless), ability to work nights/weekends/holidays, lift up to 25lbs, attention to detail.
POS, firewalls, switches, wireless
3w
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Lead, Information Technology
Centennial, Colorado, United States
$86k-$114k/yr OnsiteFull Time
4+ YOE1+ Mgmt3+ years administering Windows server/workstation and network environments, 1+ year mentoring, experience with VPNs, firewalls, virtualization, SQL Server, Google Workspace, MFA and VoIP; project leadership and communication skills.
Microsoft Windows Server, Windows, VPNs, firewalls, routing, switching, Microsoft SQL Server, Google Workspace, multi-factor authentication, VoIP, Fortinet
4d
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Network Engineer 3 (TG)
Annapolis Junction or San Antonio or Aurora or Cary
$169k-$266k/yr OnsiteFull Time
10+ YOEActive TS/SCI with Polygraph required; 10+ years relevant experience (varies by degree); expertise in LAN/WAN design, VPN/IPSec, VoIP, GRE, firewalls, load‑balancing, network analyzers, and troubleshooting.
LAN, CAN, WAN, VPN, VoIP, GRE Tunneling, IPSec, NAT, Media over IP (MoIP), Traffic Shaping, load‑balancing, firewall, network analyzer, WAN test equipment, network simulator, ISO 9000
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
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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
1mo
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Manager, Cybersecurity GRC, Global
Denver or North America or Europe or Africa or Asia or Australia
$145k-$160k/yr HybridFull Time
5+ YOE5+ years designing and managing cybersecurity programs; bachelor’s in IT/cybersecurity or equivalent; CISSP/CISM/CISA/CCSP preferred; hands-on with SIEM, firewalls, IDS/IPS, endpoint protection, vulnerability management; audit, risk, and incident response experience.
ISO 27001, SOC 2, NIST, SIEM, firewalls, IDS/IPS, endpoint protection, vulnerability management tools, Microsoft Office 365
2mo
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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
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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
2mo
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Commercial Account Manager
Denver or Atlanta
$195k-$457k/yr RemoteFull Time
8+ YOE8+ years networking sales experience; proven ability to sell routers, switches, firewalls and wireless; consultative selling and account planning skills; experience with service provider/cable customers preferred; bachelor\u0002s preferred; ability to travel up to 25%.
routers, switches, firewalls, wireless
2mo
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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
1mo
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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
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Sr. Network Systems Engineer
Denver or Littleton or Brevard County
$134k-$187k/yr OnsiteFull Time
Blue Origin: Develops reusable rockets and systems for human spaceflight.
8+ YOEBachelor's degree and 8+ years in network systems engineering with COMSEC, network protocols, firewall/VLAN/ACL implementation, monitoring tools, and collaboration with hardware teams.
SolarWinds, Nagios, PRTG, AWS, Azure, GCP, Ansible, Terraform, Python
3mo
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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
1d
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Edge Connectivity Specialist 2
Omaha or Saint Louis Park or Denver or Englewood or Orlando or Kansas City or Albuquerque or Portland or Salem or Pittsburgh or Austin or Dallas or Fort Worth or San Antonio or Vienna or Olympia or Columbia or Saint Paul or Harrisburg or Pennington or Woodcliff Lake or Phoenix or Folsom
OnsiteFull Time
3+ YOEBachelor's degree or equivalent experience, 3+ years in network engineering or enterprise infrastructure support, and experience with LAN/WAN, wireless, routing, switching, VPNs, VLANs, and firewalls.
Azure, AWS, SD-WAN, VLANs, VPN, LAN/WAN, Fortinet, Palo Alto, Aruba
1d
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Edge Connectivity Specialist 2
Omaha or Phoenix or Saint Paul or Austin or Kansas City or Columbia or Denver or Vienna or Saint Louis Park or Folsom or Portland or Pennington or Woodcliff Lake or Orlando or Harrisburg or Salem or Fort Worth or Pittsburgh or San Antonio or Dallas or Albuquerque or Olympia or Englewood
OnsiteFull Time
3+ YOEBachelor’s degree or equivalent experience, 3+ years in network engineering or enterprise infrastructure support, and expertise in LAN/WAN, routing, switching, VLANs, VPNs, wireless, firewalls, and network troubleshooting.
LAN/WAN, VPN, SD-WAN, VLAN, Microsoft Azure, AWS, Fortinet, Palo Alto, Aruba, CCNA, CCNP
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IT OT Network Engineer
Centennial, Colorado, United States
$95k-$125k/yr OnsiteFull Time
5+ YOE5+ years administering enterprise or industrial networks; bachelor\u0002s (or equivalent) in IT/CS/EE; experience with industrial networking, firewalls, VPNs, Azure, virtualization, SQL databases, and industrial cybersecurity.
Microsoft Azure, VMware, Hyper-V, PowerShell, Python, Microsoft SQL Server, PostgreSQL, MySQL, Fortinet, Cisco, Palo Alto Networks
3w
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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
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Sr Network Administrator
Golden, Colorado, United States
$113k-$155k/yr OnsiteFull Time
6+ YOE6+ years network administration experience; bachelor\u0002s in IT or equivalent; expertise in routing, switching, wireless, firewalls, VPNs, SD-WAN, cloud networking (Azure/AWS); network automation and mentoring experience.
Azure, AWS, SD-WAN
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