1620 - C4I Systems/Network Engineer

Sigma Defense Systems LLC; San Diego (CA); On-site; USD 120,000 - 140,000; Full time

Benefits offered by this job

Dental and Vision Insurance

Medical Insurance

401(k) Plan with Company Matching Contributions

160 Hours of Paid Time Off (PTO)

Educational Assistance

Job summary

A defense contracting company based in California is looking for a self-directed C4I Systems/Network Engineer to support Navy operations. Candidates need at least 3 years of experience with C4I systems, alongside proficiency in Red Hat Enterprise Linux and network troubleshooting. The role includes providing technical expertise across tactical networks and troubleshooting shipboard and shore-based architectures. The offered salary ranges from $120,000 to $140,000 annually, along with comprehensive benefits including medical and dental insurance.

Qualifications

• 3+ years supporting Navy C4I systems such as ADNS or similar.
• 2+ years of Red Hat Enterprise Linux administration.
• Experience with network troubleshooting including routing and switching.

Responsibilities

• Provide technical expertise across Navy tactical networks.
• Support configuration and troubleshooting of network architectures.
• Collaborate with fleet operators and program stakeholders.

Skills

Supporting Navy C4I systems

Network troubleshooting

Use of Microsoft Office Suite

Education

Bachelor's degree in computer science, information systems, or related field

Tools

Red Hat Enterprise Linux

Networking certifications (CCNA)

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