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89 network security engineer jobs at 58 companies in Centennial, CO

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Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
Help us #BeatIndeed & #BeatLinkedIn
1w
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Network Security Engineer
Denver or Washington or Chicago
$98k-$160k/yr OnsiteFull Time
Bank of America
Bank of AmericaNYSE: BAC: Provides global banking, investing, and financial risk management services.
5+ YOE5+ years hands-on BGP experience, NetScout Arbor and DDoS mitigation, cloud network security (Akamai/Cloudflare), WAF experience preferred; strong technical, stakeholder, and testing skills.
BGP, NetScout Arbor, Akamai, Cloudflare, Web Application Firewall (WAF)
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1mo
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Sr. Network Security Engineer
San Diego or Irvine or Los Angeles or Centennial or Las Vegas or Edison
$150k-$180k/yr OnsiteFull Time
Axos Financial
Axos FinancialNYSE: AX: Provides digital-first banking and diverse financial services to customers.
7+ YOE7+ years network security engineering experience with ZTNA and microsegmentation, strong networking fundamentals, familiarity with AI/ML agent development, bachelor's degree or equivalent experience, excellent communication skills.
Kindo.ai, n8n, Claude/Anthropic APIs, Zero Trust Network Access (ZTNA), microsegmentation, LLM
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2mo
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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
Gusto
Gusto: Cloud-based payroll and HR software for small businesses.
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
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2d
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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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1mo
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Network Engineer, Senior
Fort Meade or Denver or Oklahoma City or Hill Air Force Base or Pearl Harbor or San Antonio
$78k-$176k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
5+ YOE5+ years in network and security architectures for DoD, with Zero Trust and BGP; 2+ years SDN/micro-segmentation; 2+ years documentation; secret clearance; HS diploma or GED; DoD network experience preferred.
Cisco, Palo Alto, Juniper, NGFW, ZTNA, BGP, SDN, NAT, SNAT
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2mo
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Principal Network Engineer
Denver, Colorado, United States
$160k-$180k/yr OnsiteFull Time
Entarian
Entarian: Provides mission-critical engineering and technology solutions for government agencies.
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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1mo
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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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4d
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Sr. Network Engineer
Thornton, Colorado, United States
$120k-$135k/yr OnsiteFull Time
MYR Group
MYR GroupNASDAQ: MYRG: Specialty contractor providing electrical construction and infrastructure services.
7+ YOE7+ years enterprise network engineering experience (CCNP-level), strong routing/switching, network security, Azure hybrid networking, VMware networking, troubleshooting and on-call participation.
Wireshark, SolarWinds, PRTG, Dynatrace, NetFlow, sFlow, Python, PowerShell, VMware, VMware NSX, ExpressRoute, F5, Azure, Microsoft operating systems
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1mo
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Network Engineer / Level 3
Boulder, Colorado, United States
$86k-$151k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
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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2mo
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Network Engineer
Annapolis Junction or Aurora
$72-$111/hr OnsiteFull Time
EverWatch
EverWatch: Develops software and intelligence systems for government agencies.
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
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1mo
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Staff Network Engineer - Active Polygraph Required
Aurora, Colorado, United States
$161k-$241k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Designs and manufactures advanced aerospace and defense systems.
8+ YOEActive TS/SCI with adjudicated full-scope polygraph, Security+ certification, 8+ years network engineering experience (varies by degree), WAN SME with expertise in routers, switches, firewalls, load balancers; ability to travel ~20-25%.
Cisco, COMSEC, Linux, Windows
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3d
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Network Lead Engineer (IT)
Denver, Colorado, United States
$115k-$183k/yr RemoteFull Time
DaVita
DaVitaNYSE: DVA: Provides kidney dialysis and integrated chronic disease management services.
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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5d
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Senior Network Engineer
Denver, Colorado, United States
$104k-$166k/yr OnsiteFull Time
Peraton
Peraton: National security and mission-critical government technology services provider.
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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2mo
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Network Engineer Tier 3
El Segundo or Colorado Springs or Springfield or Offutt AFB or Denver or Australia or Las Cruces or Sacramento or Cape Canaveral or Pearl Harbor or John C. Stennis Space Center or Chantilly or Annapolis Junction or Kirtland AFB or Vandenberg Space Force Base or Wright Patterson AFB or Piti or San Antonio or United Kingdom
$105k-$231k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
10+ YOETS/SCI with polygraph required, 10+ years' network engineering experience, Bachelor's degree or equivalent, advanced knowledge of TCP/IP/OSPF/BGP/MPLS, experience with Cisco/Juniper, network monitoring, security principles, and leadership skills.
TCP/IP, OSPF, BGP, MPLS, Cisco, Juniper, ITIL
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3w
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Voice Network Engineer II
Lone Tree or Sparks or Englewood
$82k-$113k/yr OnsiteFull Time
Sierra Nevada Corporation
Sierra Nevada Corporation: Develops mission-critical aerospace and national security technology systems.
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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3w
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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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4d
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Sr Network Engineer - CCIE Contract 1
Denver or Fort Collins
$90k-$130k/yr OnsiteFull Time
Advanced Energy
Advanced EnergyNasdaq: AEIS: Provides precision power conversion and control technology solutions.
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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1w
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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
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2w
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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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6d
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Program Network Engineer - Colorado
Aurora or Meridian or Lone Tree
$150k-$200k/yr OnsiteFull Time
ICR
ICR: A technology services providing network engineering and program support to stakeholder and government clients.
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
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