Network Engineer

Sigmatech is seeking an enthusiastic, well-qualified Network Engineer responsible for ensuring the stable, secure, and reliable operation of the National Security Space Institute's (NSSI) network infrastructure. The Network Engineer will design, implement, maintain, and manage NSSI network systems to ensure optimal performance, availability, and reliability.

• Design, configure, implement, and maintain network infrastructure, including routers, switches, firewalls, and other network devices.
• Implement and manage network security measures to protect systems against threats, vulnerabilities, and unauthorized access.
• Monitor network performance and troubleshoot connectivity, performance, and availability issues to ensure optimal operation and minimize downtime.
• Collaborate with Information Technology (IT) personnel and organizational stakeholders to design and implement network solutions that meet mission and operational requirements.
• Conduct network capacity planning and recommend hardware, software, and infrastructure upgrades as needed.
• Document network configurations, changes, procedures, and technical solutions to support continuity, troubleshooting, and compliance requirements.
• Provide technical support, guidance, and mentorship to junior network staff and other IT personnel.
• Stay current with industry trends, cybersecurity requirements, and emerging network technologies to recommend improvements and innovative solutions.

• Configure and optimize network hubs, routers, switches, and related network devices, including higher-level protocols and tunneling technologies.
• Develop, implement, and maintain network backup and recovery procedures.
• Diagnose and resolve network connectivity issues.
• Install, configure, and maintain network device operating system software, including IOS, firmware, and related updates.
• Install, replace, and upgrade network hubs, routers, switches, and other network infrastructure devices.
• Monitor network capacity, availability, and performance.
• Identify and remediate network vulnerabilities to safeguard information systems from unauthorized access and external threats.
• Test, troubleshoot, and maintain network infrastructure, including hardware and software components.

• Skill in analyzing network traffic, capacity, availability, and performance characteristics.
• Skill in implementing and testing network infrastructure contingency and recovery plans.
• Skill in designing and establishing network routing schemes.
• Skill in implementing, maintaining, and improving established network security practices.
• Skill in installing, configuring, maintaining, and troubleshooting LAN and WAN components, including routers, hubs, switches, and related network devices.
• Skill in IP addressing and subnetting.
• Skill in configuring and utilizing network protection components, including hardware firewalls, servers, routers, and related security devices.
• Skill in securing network communications.
• Skill in protecting networks and information systems against malware and other cyber threats.

• Knowledge of network architecture, topology, protocols, routing, switching, subnetting, bandwidth management, and traffic flow.
• Knowledge of Local Area Networks (LAN), Wide Area Networks (WAN), Wireless Local Area Networks (WLAN), Virtual Private Networks (VPN), Transmission Control Protocol/Internet Protocol (TCP/IP), Dynamic Host Configuration Protocol (DHCP), Domain Name System (DNS), directory services, and the Open Systems Interconnection (OSI) model.
• Knowledge of network security principles, including defense-in-depth, firewalls, encryption, access controls, malware protection, and vulnerability mitigation.
• Knowledge of cybersecurity…