1520 - Network Engineer I - III
Salary$75k – $140k
LocationSan Diego, California, United States
Typefull-time
DepartmentIMS (IMSENG, IMSPRG, IMSNM, IMST&R)
Company size501–1,000 people
PostedSep 29, 2026 · 2w ago
Verified live1d ago
At a glanceSummarised by Seekless from the posting.
0-2 Years of Experience (Network Engineer I)
Knowledge of Network Access Control (Cisco ISE, Aruba ClearPass, FortiNAC, Forescout) (Network Engineer I)
Knowledge of Next-Gen Firewalls (Cisco Firepower, Palo Alto, Zscaler) (Network Engineer I)
Knowledge of Network Devices such as Switches, Routers, Wireless Controllers/APs, Proxy Servers, VOIP, and NTP services (Network Engineer I)
Knowledge of deployment automation tools (Ansible, Python, PowerShell) (Network Engineer I)
Knowledge of delivering network artifacts such as IP plans, network templates, cable tables, network diagrams, ports/protocols documentation, and configuration guides (Network Engineer I)
Security+ or CISSP and at least one industry certification (CCNA/DevNet Associate) (Network Engineer I)
3+ Years of Experience (Network Engineer II)
Experience with Network Access Control (Cisco ISE, Aruba ClearPass, FortiNAC, Forescout) (Network Engineer II)
Experience with Next-Gen Firewalls (Cisco Firepower, Palo Alto, Zscaler) (Network Engineer II)
Experience with Network Devices such as Switches, Routers, Wireless Controllers/APs, Proxy Servers, VOIP, and NTP services (Network Engineer II)
Experience with deployment automation tools (Ansible, Python, PowerShell) (Network Engineer II)
Experience with delivering network artifacts such as IP plans, network templates, cable tables, network diagrams, ports/protocols documentation, and configuration guides (Network Engineer II)
Security+ or CISSP and at least one industry certification (CCNA/DevNet Associate) (Network Engineer II)
7+ Years of Experience (Network Engineer III)
Expertise with Network Access Control (Cisco ISE, Aruba ClearPass, FortiNAC, Forescout) (Network Engineer III)
Expertise with Next-Gen Firewalls (Cisco Firepower, Palo Alto, Zscaler) (Network Engineer III)
Expertise with Network Devices such as Switches, Routers, Wireless Controllers/APs, Proxy Servers, VOIP, and NTP services (Network Engineer III)
Expertise with deployment automation tools (Ansible, Python, PowerShell) (Network Engineer III)
Expertise with delivering network artifacts such as IP plans, network templates, cable tables, network diagrams, ports/protocols documentation, and configuration guides (Network Engineer III)
Security+ or CISSP and at least one industry certification (CCNP/DevNet Professional) (Network Engineer III)
Candidate must possess or have the ability to obtain an active Secret security clearance or higher
Bachelor's or Technical Degree from an accredited college or university
Must be a U.S. citizen
Must be a U.S. Citizen (Network Engineer II)
Must be a U.S. Citizen (Network Engineer III)
Skills
Cisco ISE
Aruba ClearPass
FortiNAC
Forescout
Cisco Firepower
Palo Alto
Zscaler
Ansible
Python
PowerShell
Switches
Routers
Wireless Controllers
APs
Proxy Servers
VOIP
NTP
SD-WAN
IPv6
Zero Trust Networks
Benefits
Health insurance
Dental insurance
Vision insurance
Life insurance
Employee assistance program
401(k)
Paid time off
Holidays
Tuition reimbursement
About the role
Sigma Defense is seeking a Network Engineer I-III to support the design, implementation, and sustainment of the Navy’s enterprise networks. The hired candidate will design, configure, secure, automate, and document high-availability networks in both shipboard and lab environments while supporting the full lifecycle from installation through sustainment. This includes working on DoD initiatives such as SD-WAN, IPv6 Migration, Zero Trust Networks and Cross-Domain Network solutions. They will work with SMEs in Cybersecurity, Systems Management, Systems Engineering, and Quality Assurance to learn the needs and goals of the system and shape the requirements of the network.
Equal Opportunity Employer/Veterans/Disabled: Sigma Defense Systems is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
Requirements
Network Engineer I:
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0-2 Years of Experience.
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Knowledge of Network Access Control (Cisco ISE, Aruba ClearPass, FortiNAC, Forescout).
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Knowledge of Next-Gen Firewalls (Cisco Firepower, Palo Alto, Zscaler).
•
Knowledge of Network Devices such as Switches, Routers, Wireless Controllers/APs, Proxy Servers, VOIP, and NTP services.
•
Knowledge of deployment automation tools (Ansible, Python, PowerShell).
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Knowledge of delivering network artifacts such as IP plans, network templates, cable tables, network diagrams, ports/protocols documentation, and configuration guides.
•
Security+ or CISSP and at least one industry certification (CCNA/DevNet Associate).
•
Must be a U.S. citizen.
Network Engineer II:
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3+ Years of Experience.
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Experience with Network Access Control (Cisco ISE, Aruba ClearPass, FortiNAC, Forescout).
•
Experience with Next-Gen Firewalls (Cisco Firepower, Palo Alto, Zscaler).
•
Experience with Network Devices such as Switches, Routers, Wireless Controllers/APs, Proxy Servers, VOIP, and NTP services.
•
Experience with deployment automation tools (Ansible, Python, PowerShell).
•
Experience with delivering network artifacts such as IP plans, network templates, cable tables, network diagrams, ports/protocols documentation, and configuration guides.
•
Security+ or CISSP and at least one industry certification (CCNA/DevNet Associate).
•
Must be a U.S. Citizen.
Network Engineer III:
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7+ Years of Experience.
•
Expertise with Network Access Control (Cisco ISE, Aruba ClearPass, FortiNAC, Forescout).
•
Expertise with Next-Gen Firewalls (Cisco Firepower, Palo Alto, Zscaler).
•
Expertise with Network Devices such as Switches, Routers, Wireless Controllers/APs, Proxy Servers, VOIP, and NTP services.
•
Expertise with deployment automation tools (Ansible, Python, PowerShell).
•
Expertise with delivering network artifacts such as IP plans, network templates, cable tables, network diagrams, ports/protocols documentation, and configuration guides.
•
Security+ or CISSP and at least one industry certification (CCNP/DevNet Professional).
•
Must be a U.S. Citizen.
Computer Software/Programs:
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Network Access Control
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Switching/Routing
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Firewall
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Deployment Automation
Personnel Clearance Level:
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Candidate must possess or have the ability to obtain an active Secret security clearance or higher.
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Clearance may be sponsored for the right candidate.
Education Requirements:
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Bachelor’s or Technical Degree from an accredited college or university in an unspecified field of study.
Essential Job Duties (not all-inclusive):
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Configure, install, and maintain network equipment, software and services across Navy Enterprise Network architecture to include switching, routing, firewall, proxy, wireless, call managers, network access control, voice over IP, and network time services.
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Design, develop, implement, and troubleshoot VLANs, routing protocols, IP addressing plans, and WAN connectivity.
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Integrate external services including a wide variety of connected systems.
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Apply and validate network-related STIGs in coordination with cybersecurity personnel to ensure compliance with DoD security standards.
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Create, maintain, and update installation documentation, network diagrams, IP schemas, port mappings, and script/configurations for automated installations.
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Conduct diagnostics and fault isolation during official and unofficial test events as well as production installations.
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Collaborate with systems, software, and cybersecurity engineers to deliver secure and resilient network operations.
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Participate in shipboard testing, validation, and documentation.
Salary Ranges:
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Network Engineer I: $75,000 - $100,000 annually.
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Network Engineer II: $85,000 – $115,000 annually.
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Network Engineer III: $120,000 – $140,000 annually.
Benefits
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Dental and Vision Insurance
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Medical Insurance to Include HSA, FSA, and DFSA Plans
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Life and AD&D coverage
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Employee Assistance Program (EAP)
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401(k) Plan with Company Matching Contributions
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160 Hours of Paid Time Off (PTO)
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12 (Floating) Holidays
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Educational Assistance
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Highly Competitive Salary