Tier III Network Engineer

Sigma Defense's Network Operations team is seeking a charismatic Tier III Network Engineer to join the mission. This engineer will provide occasional 24/7 on-call support for the Defense Information Systems Agency (DISA) Intelligence, Surveillance, and Reconnaissance (ISR) Transport Enterprise in conjunction with the Special Operations Command (SOCOM) Program of Record. They will be part of a team of Senior Engineers supporting a worldwide architecture of customer-focused equipment.

The Senior Network engineer will be responsible for:

• Developing, engineering, and testing network configurations
• Systems-monitoring
• Routine preventative maintenance
• Site upgrades and integrations at customer locations
• Providing detailed technical documentation including network diagrams, process flow charts, and procedural guidelines
• Configuring, managing, and evaluating multi-protocol network elements for effective end-to-end communications
• Coordinating ASIs, executing changes within established time windows, and recording results
• Providing higher-level troubleshooting support to Tier II network engineers working 24/7 shift operations

Key Requirements:

• 10-15 years of relevant experience
• Ability to travel worldwide, including to austere environments
• Proficiency in layer 2 switching and layer 3 routing
• Deep understanding of Cisco IOS, Cisco Firewalls, and networking technologies
• Experience with EIGRP, OSPF, STP, VTP, ACLs, and Layer 3 tunnels
• Experience with Cisco switches, routers, cryptographic devices, VPN, and VPN client
• Experience supporting IP services for NIPRNET/SIPRNET
• Bachelor's degree in Information Technology or related field
• Active DoD-issued Secret security clearance (or ability to obtain one)
• DoD IAT 8570 certification (CCNA/CCNP Sect+)

This role offers an excellent opportunity for a skilled network engineer to work on critical defense systems and contribute to national security efforts. The position comes with competitive benefits, including medical, dental, and vision insurance, 401(k) with company matching, and educational assistance.