Senior Network Engineer - Secure Mission-Critical Infra

Sigmatech; Colorado Springs (CO); On-site; USD 105,000 - 140,000; Full time

Job summary

Sigmatech seeks a Network Engineer to design, implement, and manage the National Security Space Institute's network infrastructure, ensuring stability, security, and reliability.

The role requires expertise with routers, switches, firewalls, and network protocols, plus strong security practices and DoD context. Candidates should have 5+ years in network operations and be capable of guiding junior staff.

Qualifications

• Bachelor's degree in Information Technology, Cybersecurity, Data Science, Information Systems, Computer Science, or related field; ABET/CAE preferred for DoD pathway.
• Five+ years in network operations/engineering with Cisco/Juniper equipment.
• Experience supporting secure, enterprise or mission-focused networks is preferred.

Responsibilities

• Design, configure, implement, and maintain network infrastructure (routers, switches, firewalls).
• Implement and manage network security measures to protect against threats.
• Monitor performance, troubleshoot connectivity and downtime.
• Collaborate with IT and stakeholders to meet mission requirements.
• Plan capacity, recommend upgrades and document configurations.

Skills

Network analysis

Capacity planning

Routing design

Security practices

LAN/WAN

IP addressing

Threat protection

Education

Bachelor's degree in IT/CS

Tools

Cisco IOS

Juniper JUNOS

Network monitoring tools

Firewall management

Job description

Sigmatech seeks a Network Engineer to design, implement, and manage the National Security Space Institute's network infrastructure, ensuring stability, security, and reliability.

The role requires expertise with routers, switches, firewalls, and network protocols, plus strong security practices and DoD context. Candidates should have 5+ years in network operations and be capable of guiding junior staff.