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Job description
Overview
The Automated Digital Network System (ADNS) is an Acquisition Category II program that integrates and adapts Commercial‑Off‑the‑Shelf (COTS) and Government‑Off‑the‑Shelf (GOTS) hardware and software to deliver the Navy's tactical IP routing and switching capability. As the primary Wide Area Network (WAN) transport system for afloat units, ADNS enables secure ship‑to‑shore connectivity and optimizes the use of available satellite and line‑of‑sight bandwidth.
Position
Sigma Defense is seeking a self‑directed, highly motivated C4I Systems/Network Engineer to support this mission.
Equal Opportunity Statement
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
3+ years supporting Navy C4I systems (ADNS, TACNET, CANES, or similar)
2+ years administering Red Hat Enterprise Linux in operational or enterprise environments
2+ years hands‑on network troubleshooting (routing, switching, enclave connectivity)
Experience using Microsoft Office Suite
CompTIA Security+ CE
Prior fleet IT/ET/CT experience or Navy help desk/Tier II‑III support is preferred
DoD 8570 IAT Level II (Security+ certification)
Red Hat (RHCSA/RHCE) or equivalent Linux certification is preferred
CCNA or equivalent network certification is preferred
Must be a U.S. citizen
Education Requirements
Bachelor's degree from an accredited college or university in computer science, information systems, software engineering, or a related technical field of study
May substitute with 8+ years of relevant engineering or configuration/testing environment experience
Personnel Clearance Level
Candidate must possess or have the ability to obtain an active Secret security clearance or higher.
Clearance may be sponsored for the right candidate
Essential Job Duties (not all inclusive)
Provides technical expertise across Navy tactical networks with emphasis on ADNS operations, Red Hat Enterprise Linux administration, and TACNET system support
Supports the configuration, troubleshooting, and sustainment of shipboard and shore-based network architectures
Ensures reliable multi‑enclave connectivity across SATCOM and line of sight transport paths
Applies hands‑on experience with routing, switching, enclave services, and system hardening
Collaborate with fleet operators, help desk personnel, and program stakeholders to maintain mission‑ready communications capabilities
Salary Range
$120,000 - $140,000 annually.
Benefits
Dental and Vision Insurance
Medical Insurance to Include HSA, FSA, and DFSA Plans
Life and AD&D coverage
Employee Assistance Program (AP)
401(k) Plan with Company Matching Contributions
160 Hours of Paid Time Off (PTO)
12 (Floating) Holidays
Educational Assistance
Highly Competitive Salary
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Worksite address
san diego, CA, 92189, US
Who can apply
Review the original listing for work authorization, qualifications and employer requirements.