Sr. Network Engineer

The Planet Group has partnered with a Milwaukee, WI based company to locate a Sr. Network Engineer for a contract to hire role.

We're seeking a Senior Network Engineer who will take ownership of the organization's core network infrastructure, including switches, routers, firewalls, wireless networks, and secure connectivity solutions.

This role is ideal for a networking professional who enjoys balancing hands-on technical work with project leadership, infrastructure improvements, and mentoring less experienced team members.

The position will require five days a week onsite in Milwaukee to start but will eventually be a hybrid role with only two days a week onsite. As it is a contract-to-hire role, we can only accept candidates who do not require sponsorship of any kind either now or in the future.

RESPONSIBILITIES:

Network Infrastructure

• Design, implement, and support enterprise network environments across multiple locations.
• Administer and maintain switches, routers, firewalls, wireless networks, and remote connectivity solutions.
• Configure and support routing, switching, and network segmentation technologies.
• Plan and execute network upgrades, expansions, and infrastructure modernization efforts.
• Support business-to-business connectivity and secure remote access services.

Network Operations

• Monitor network performance, availability, and reliability.
• Troubleshoot complex LAN, WAN, wireless, and connectivity issues.
• Perform root cause analysis and implement long-term solutions.
• Maintain network documentation, diagrams, standards, and procedures.
• Coordinate with vendors and service providers on network-related initiatives.

Security & Compliance

• Manage firewall policies, access control lists (ACLs), VPNs, and network security controls.
• Partner with cybersecurity teams to strengthen network security posture.
• Support vulnerability remediation and security best practices.
• Participate in incident response and network security investigations as needed.

Leadership & Collaboration

• Lead network infrastructure projects from planning through implementation.
• Provide technical guidance and mentorship to junior team members.
• Collaborate with systems, security, and application teams to support organizational technology goals.

REQUIRED QUALIFICATIONS

• 5 years of experience supporting enterprise network infrastructure.
• Strong knowledge of routing, switching, and network design principles.
• Experience troubleshooting LAN, WAN, wireless, and remote connectivity environments.
• Hands-on experience with firewalls, ACLs, VPNs, and network security best practices.
• Experience supporting network upgrades, implementations, and operational improvements.
• Strong communication and problem-solving skills.

PREFERRED QUALIFICATIONS

• Experience with network monitoring and reporting tools.
• Familiarity with security monitoring, log analysis, and incident investigation.
• Exposure to VoIP technologies.
• Experience with Palo Alto, Cisco, or similar enterprise networking platforms.
• Industry certifications such as CCNA, CCNP, Network , or Security .