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34 firewall engineer jobs at 25 companies in Greeley, CO

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Sr Principal Network Engineer
Aurora, Colorado, United States
$129k-$194k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
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
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Senior Systems Engineer – Security Integration
Aurora, Colorado, United States
$152k-$205k/yr OnsiteFull Time
Four Sea Group
Four Sea Group: Technical mission support and software engineering for aerospace.
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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Senior Staff / Senior Network Engineer
Boulder, Colorado, United States
$145k-$204k/yr OnsiteFull Time
SciTec
SciTec: Provides advanced remote sensing and missile defense technology solutions.
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
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Network Engineer
Denver, Colorado, United States
$80k-$100k/yr OnsiteFull Time
bet365
bet365: Provides global online sports betting and digital casino games.
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
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Network Engineer (TS/Q Clearance required)
Washington or Albuquerque or Germantown or Denver
$111k-$150k/yr OnsiteFull Time
GDIT
GDITNYSE: GD: Delivers IT and mission services to government agencies.
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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Cybersecurity Engineer
Denver or United States
$80k-$120k/yr RemoteFull Time
Apollo Information Systems
Apollo Information Systems: Provides intelligence-led cybersecurity services and managed security programs.
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
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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
Second Front Systems
Second Front Systems: Secure cloud hosting and automated compliance for government software.
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
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Senior DevOps Engineer - Lunar Permanence
Seattle or Denver
$182k-$277k/yr OnsiteFull Time
Blue Origin: Develops reusable rockets and systems for human spaceflight.
8+ YOEBS or equivalent,8+ years experience,expertise in Linux,Docker,CI/CD,AWS,Terraform/CloudFormation,Kubernetes and Rancher,RKE2,Longhorn,monitoring (Loki,Prometheus),HashiCorp tools,Python,GitLab,with safety-critical or aerospace experience preferred.
Linux, Docker, Continuous Integration and Delivery (CI/CD), AWS, Terraform, CloudFormation, VPC, Subnets, Firewalls, VPNs, Kubernetes, Rancher, RKE2, Longhorn, Alloy, Loki, Prometheus, Hashicorp Consul, Hashicorp Vault, Python, GitLab, git, Ansible, C, C++
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Supervisor Network Engineer
Cedar Rapids or Denver or Philadelphia
$109k-$140k/yr HybridFull Time
Transamerica
TransamericaNYSE: AEG: Provides insurance, retirement solutions, and investment products to customers.
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.
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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
Sentinel Technologies
Sentinel Technologies: Provides managed IT services and comprehensive technology solutions.
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
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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
WOW!
WOW!: Provides broadband internet, cable television, and digital phone services.
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
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Sr. Field Service Engineer / Sr Systems Administrator
Lafayette, Colorado, United States
$95k-$143k/yr RemoteFull Time
Medtronic
MedtronicNew York Stock Exchange: MDT: Develops and manufactures medical devices and digital health solutions.
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
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Senior Network Engineer
Boulder, Colorado, United States
$96k-$136k/yr HybridFull Time
ANG SIGNAL
ANG SIGNAL: IT and engineering services provider for government and commercial sectors.
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
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2w
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IT Engineer - Network & Security
Naperville or Denver
$120k-$130k/yr HybridFull Time
PTMA Financial Solutions
PTMA Financial Solutions: Provides treasury and investment services to public sector entities.
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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4d
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Senior Cybersecurity Engineer
Berthoud, Colorado, United States
$130k-$162k/yr OnsiteFull Time
Ursa Major
Ursa Major: Designs and manufactures rocket engines and aerospace propulsion systems.
4+ YOE4+ years cybersecurity engineering in regulated environments, bachelor's in relevant field or equivalent, expertise with NIST SP 800-171/CMMC L2 and hybrid IT/OT security, ability to work with engineering stakeholders and obtain US security clearance.
SIEM, firewalls, Zero-Trust Network Access, identity platforms, vulnerability management, site-to-site VPNs, micro-segmentation
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Presales Systems Engineer - SASE
Durham or Denver or Fort Collins
$121k-$284k/yr RemoteFull Time
Hewlett Packard Enterprise
Hewlett Packard EnterpriseNYSE: HPE: Provides global edge-to-cloud technology solutions and IT infrastructure services.
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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Tier III – Technical Support & Network Engineer (EMEA)
Denver, Colorado, United States
$100k-$120k/yr OnsiteFull Time
Todyl
Todyl: Provides a unified cloud-native cybersecurity platform for small businesses.
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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IT Network Engineer
Commerce City, Colorado, United States
$102k-$153k/yr OnsiteFull Time
ADCOM911
ADCOM911: Operates emergency 911 call taking and public safety dispatching.
2+ YOEExperience implementing and troubleshooting routers, switches, firewalls, VPN, and enterprise routing (MPLS, OSPF, BGP); 2+ years IT experience preferred; CJIS clearance and Colorado driver’s license required; strong documentation and communication skills.
MPLS, Multi-VRF, OSPF, BGP, EtherChannel, vPC, VLAN, HSRP, Spanning Tree, Cisco Firepower, VPN, Cisco Unity Connection (CUC), Cisco Unified Communications Manager (CUCM), Cisco UCS, VMware, Windows, Linux, protocol analyzers
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Senior Azure Infrastructure Engineer
Loveland or Fountain Valley
$97k-$127k/yr HybridFull Time
Antech
Antech: Provides veterinary diagnostic services and technology for animal health.
7+ YOE7+ years in Azure cloud infrastructure; AZ-104; IaC (Terraform/Bicep); DevOps tools; Palo Alto firewalls; Linux; hybrid/cloud migrations.
Terraform, Bicep, PowerShell, Azure CLI, ARM templates, Azure DevOps, GitHub Actions, Jenkins, Palo Alto, Linux
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Platform Security Engineer 2
Folsom or Denver or Englewood or Minneapolis or St. Paul or Pennington or Woodcliff Lake or Olympia
OnsiteMultiple Commitments Available
HDR
HDR: Global firm providing architecture, engineering, and environmental services.
3+ YOEMinimum 3 years in infrastructure/security; bachelor’s in IT/cybersecurity/computer science or equivalent; firewall and IAM experience; VMware NSX/vDefend knowledge; scripting/automation; CIS/NIST familiarity.
VMware NSX, vDefend, Aria Operations, Aria Automation, Azure, AWS, OPA, Sentinel, Terraform, Ansible, SSO/federation
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