Sr. Network Engineer

Job Description

Job Description

Senior Network Engineer

About the Opportunity

Butterfly Staffing is seeking a Senior Network Engineer to support and maintain enterprise-level network infrastructure across multiple environments.

This role is responsible for the design, implementation, troubleshooting, and optimization of secure network systems, ensuring reliability, performance, and security across LAN/WAN and wireless environments.

This is a hands-on position requiring strong technical depth, problem-solving ability, and experience working in dynamic, operational environments.

Responsibilities

• Design, implement, and maintain LAN/WAN and wireless network infrastructure
• Configure and support routers, switches, firewalls, VPNs, and security appliances
• Monitor network performance and respond to alerts, outages, and service disruptions
• Troubleshoot network issues and support root cause analysis and resolution
• Evaluate and deploy new network services and technologies
• Maintain accurate network diagrams, configurations, and documentation
• Assist with system upgrades, migrations, and infrastructure improvements
• Support network automation, policy management, and analytics tools
• Participate in on-call rotation and provide after-hours support as needed
• Collaborate with internal IT teams and support ongoing projects

Qualifications

• Bachelor's degree or 10+ years of relevant experience
• Minimum of 5 years supporting Microsoft-based environments
• Strong understanding of:
• LAN/WAN | DNS | Routing | Switching
• Network security principles and infrastructure
• Hands-on experience with:
• Cisco networking (routers, switches, wireless)
• Firewalls and security appliances

Preferred Experience

• Cisco Catalyst Center (DNA Center)
• Cisco Identity Services Engine (ISE)
• Network automation and software-defined networking (SDN)
• Zero Trust architecture and network segmentation
• Wireless networking (design, troubleshooting, RF fundamentals)
• Firepower Management Center (FMC)
• Firewall migrations (e.g., Juniper to Cisco NGFW)

Work Environment

• On-site role supporting operational environments, including industrial settings
• Must be comfortable working in indoor and outdoor conditions
• Ability to lift up to 50 lbs and perform physical installation tasks (cabling, equipment, etc.)
• May require work in tight spaces and on vessels
• Participation in on-call rotation required

Additional Requirements

• Strong analytical, troubleshooting, and problem-solving skills
• Ability to work independently and manage multiple priorities
• Excellent communication and documentation skills
• Must be reliable with consistent on-site attendance
• Ability to pass a background and credit check