55 firewall engineer jobs at 33 companies in Lone Tree, CO
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Cybersecurity Network Engineer
Colorado Springs, Colorado, United States
$87k-$198k/yr OnsiteFull Time
10+ YOE10+ years cybersecurity engineering experience for defense programs, Top Secret clearance, bachelor's degree, DoD 8140 certifications (intermediate/advanced), RMF experience, network engineering with routers/firewalls/sdn, strong communication skills.
routers, firewalls, switches, next generation firewalls, software defined networking, virtual networks, Risk Management Framework (RMF), Cyber Tabletop (CTT)
2mo
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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
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
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
4w
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Network Engineer
Colorado Springs, Colorado, United States
$80k-$176k/yr OnsiteFull Time
4+ YOE4+ years network engineering experience in Defense environments, BA/BS (or substitutions), hands-on routing/switching/firewall/VPN/load balancer experience, network monitoring and protocols knowledge, patching and security controls, strong troubleshooting skills.
SolarWinds, Splunk, LogicMonitor, Python, Ansible
2mo
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Senior Network Engineer
Colorado Springs, Colorado, United States
$115k-$135k/yr OnsiteFull Time
7+ YOE7+ years in enterprise network engineering; Palo Alto firewalls; Cisco switching/routing; hybrid cloud networking; security-focused design; regulated environments experience.
Palo Alto firewalls, Cisco switching and routing, AWS Transit Gateway, Direct Connect, Site-to-site VPN, Zero Trust, Infrastructure as code, Network automation
3w
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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
2w
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Senior Network Engineer
Colorado Springs, Colorado, United States
$80k-$120k/yr OnsiteFull Time
5+ YOEBachelor's degree and 5+ years relevant experience; Security+ or Network+ (or higher); active Secret clearance; experience with network maintenance, servers, routers, switches, firewalls, and radar/defense systems.
PARCS, UEWR, PAVE PAWS, SecDevOps
1d
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Senior Network Engineer
Colorado Springs, Colorado, United States
$144k-$176k/yr HybridFull Time
10+ YOE10+ years supporting enterprise or mission-critical networks, hands-on routing/switching, firewalls, Cisco experience, classified environment experience, TS/SCI eligibility, EM/security best practices, packet analysis, cloud networking.
Cisco, DNS, DHCP
2mo
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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
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
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
2mo
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Systems Engineer Staff - Level 4 (TS/SCI)
Colorado Springs, Colorado, United States
$109k-$193k/yr OnsiteFull Time
Active Top‑Secret/SCI clearance and U.S. citizenship required; deep network foundations, multi‑vendor firewall/router/switch experience, Agile delivery experience, IAT Level II certification (or obtain within 60 days).
GitLab, Kubernetes, Helm, VMware/ESXi, JIRA, Confluence, Python, PowerShell, Ansible, Visio
1mo
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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
1mo
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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.
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
2mo
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Network Engineer (TS/SCI, Onsite), Lead Security Engineer II
Colorado Springs, Colorado, United States
$116k-$194k/yr OnsiteFull Time
3+ YOEBachelor's degree, active TS/SCI clearance, legally authorized to work in the U.S., 3+ years in network engineering including firewall management, Red Hat Linux, and Cisco IP routing; automation/scripting and enterprise datacenter experience.
Red Hat, Cisco IP Routing, Scaled Agile Framework (SAFe), DevSecOps
1w
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Sr. Field Service Engineer / Sr Systems Administrator
Lafayette, Colorado, United States
$95k-$143k/yr RemoteFull Time
10+ YOEBachelor's degree,10+ years IT experience with Windows and networking, virtualization, Active Directory, Wi‑Fi, scripting, and field installation experience in hospital environments; ability to travel frequently.
Microsoft Windows 10, Microsoft Windows 11, Microsoft Server 2016, Microsoft Server 2019, Microsoft Server 2022, Microsoft SQL Server 2016, Microsoft SQL Server 2019, Microsoft SQL Server 2022, Active Directory, VMware, Azure, Wi-Fi, Routers, Switches, VLANs, Subnets, Firewalls
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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