Network Engineer Level 3

Level 3 Network Engineer

Location : Connecticut

Employment Type : Full-Time - ONSITE MANCHESTER, CT

About Grey Matter Technologies

Grey Matter Technologies is a premier IT Managed Services Provider (MSP) specializing in high-end, full-spectrum technology solutions for high-net-worth individuals and businesses. Our services include IT infrastructure, security, access control, audio / video, VOIP, CAD, and low-voltage construction. We only hire Level 2 and Level 3 engineers , ensuring that we provide top-tier expertise to our clients.

We are looking for a highly skilled Level 3 Network Engineer to join our team. The ideal candidate will have extensive experience in enterprise networking, security, and cloud technologies , with expertise in multiple vendor solutions, including Cisco, Juniper, Fortinet, Palo Alto, and cloud-based networking (AWS, Azure, GCP).

Key Responsibilities

• Design, implement, and troubleshoot complex network infrastructures for enterprise clients.
• Configure and maintain routers, switches, firewalls, and wireless networks across multi-vendor environments.
• Optimize network performance, implement QoS policies, VLANs, VPNs, and SD-WAN solutions.
• Provide advanced troubleshooting and support for network outages, security incidents, and performance issues.
• Design and implement network security policies, intrusion detection, and firewall configurations.
• Work on cloud-based networking (AWS, Azure, GCP) and hybrid network infrastructures.
• Conduct network assessments, security audits, and penetration testing as needed.
• Automate network configurations and deployments using Python, Ansible, Terraform, or other scripting tools.
• Lead projects related to network upgrades, migrations, and new deployments.
• Provide documentation, training, and knowledge transfer to internal teams and clients.

Required Skills & Experience

Preferred Certifications (Not required, but highly valued)

Why Join Grey Matter Technologies?