Jobs at Sigma Defense Systems LLC

Design, develop, integrate, and maintain IT systems and software components supporting Navy enterprise networks (PMW160/NIWC Pacific). Responsibilities include system automation using Ansible, PowerShell, and Python; hardware/software integration across Windows and Linux virtual infrastructures; DoD cybersecurity compliance (STIG, RMF); troubleshooting in lab and deployed environments; and supporting production installation and testing events.…See more Requires 4–7 years of IT systems experience, Security+ or CISSP plus an OS certification, and ability to obtain a Secret clearance or higher.

The Network Engineer IV delivers advanced afloat C4ISR network engineering, integration, and sustainment for the Navy's carrier training tactical system within the CANES architecture. The role maintains, configures, and troubleshoots ruggedized network hardware and software baselines while providing hands-on technical support to shipboard ITs and NIWC Pacific during Fleet training events, readiness exercises, and deployment workups.…See more Responsibilities include system updates, patching, baseline management, virtualization support, enclave routing, cybersecurity compliance (STIG application, HBSS/ACAS remediation, Zero Trust hardening), and functional/performance testing with documentation of findings. The engineer must hold or obtain a Secret clearance, possess CCNA/CCNP and DoD 8570 IAT Level II (Security+), and have 3–5 years of network engineering experience with preferred expertise in Ansible, Python, Bash, PowerShell, and DevSecOps automation.

The Network Engineer IV delivers advanced tactical network engineering, integration, and sustainment for the Navy's carrier training system (CANES architecture), ensuring reliable data transport, system interoperability, and secure performance. The role maintains, configures, and troubleshoots shipboard and afloat network hardware and software, supports Fleet training readiness exercises, and provides hands-on technical leadership across NIWC Pacific and shipboard IT teams.…See more Responsibilities include system updates, patching, virtualization management, cybersecurity compliance (RMF, STIG, HBSS/ACAS), and functional/performance testing with occasional underway periods. The engineer must hold or obtain an active Secret clearance (TS/SCI preferred), possess DoD 8570 IAT Level II and CCNA/CCNP certifications, and demonstrate expertise in Linux, Windows Server, Cisco IOS/NX-OS, Juniper JUNOS, and infrastructure automation.

The Network Engineer IV delivers advanced tactical network engineering, integration, and sustainment for Navy carrier training systems within the CANES architecture. The role involves maintaining, configuring, and troubleshooting shipboard network hardware and software, supporting NIWC Pacific and fleet operations during training exercises and deployment workups.…See more Key responsibilities include system sustainment, afloat technical support, cybersecurity compliance (RMF, STIG, Zero Trust), and automated testing. The engineer must hold or obtain a Secret clearance, possess CCNA/CCNP and Security+ certifications, and have 3–5 years of network engineering experience with Navy tactical networks (NIPR/SIPR/CANES).

This is a tiered network engineering role (I–III) supporting DoD Navy Enterprise Network architecture. Engineers will configure, install, and maintain network equipment including switches, routers, firewalls, wireless controllers, and network access control systems; design and troubleshoot VLANs, routing protocols, IP addressing, and WAN connectivity; and apply DoD security standards (STIGs) in coordination with cybersecurity teams.…See more Requirements scale with experience level (0–2 years for Level I, 3+ for Level II, 7+ for Level III) and include knowledge/expertise in Cisco ISE, Palo Alto, Zscaler, Ansible, Python, and PowerShell, plus Security+ or CISSP certification.

Network Engineer III will support testing of communications between a Surrogate MQ-25 Air Vehicle and Ground Control Station, including narrowband and wideband satellite and line-of-sight links. Responsibilities include designing and troubleshooting multi-vendor network systems (routers, switches, firewalls), writing test plans and procedures, performing Wireshark traffic analysis, configuring network devices, and applying DISA STIGs.…See more The role requires 4+ years of DoD/government network experience, proficiency in Cisco routing/switching, Layer 2/3 protocols (BGP, DMVPN, IPSec, OSPF, EIGRP, VRRP, STP), Linux administration, and network automation tools (Ansible, Python). CCNA certification is mandatory and Secret clearance must be held at start.