Job Description

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

• 10+ years of experience in enterprise networking, MSP, or IT consulting environments.
• Deep expertise in Cisco, Juniper, Fortinet, and Palo Alto networks.
• Strong understanding of firewall configurations, VPNs, IDS/IPS, and Zero Trust Security models.
• Experience with cloud networking (AWS VPCs, Azure Virtual Networks, GCP networking).
• Hands-on experience with SD-WAN, MPLS, and hybrid cloud environments.
• Knowledge of IPv4, IPv6, BGP, OSPF, EIGRP, STP, VLANs, and advanced routing protocols.
• Familiarity with VOIP, QoS, and network performance optimization.
• Automation & Scripting: Experience with Python, Ansible, Terraform, or PowerShell.
• Experience working with enterprise Wi-Fi solutions (Cisco Meraki, Ruckus, Aruba, Ubiquiti).
• Strong documentation and reporting skills .
• Ability to mentor junior engineers and support internal knowledge sharing.

Preferred Certifications (Not required, but highly valued)

• Cisco: CCNP, CCIE
• Juniper: JNCIP, JNCIE
• Fortinet: NSE 4, NSE 7
• Palo Alto: PCNSE
• AWS/Azure: AWS Certified Advanced Networking – Specialty, Azure Network Engineer Associate
• Security: CISSP, CEH, or equivalent

Why Join Grey Matter Technologies?

• Work on cutting-edge networking, security, and cloud projects.
• Be part of an elite team of highly experienced engineers.
• Opportunity to work with high-net-worth clients and luxury brands.
• Competitive salary, performance-based bonuses, and benefits.
• Access to the latest networking and security technologies.
• Work in a fast-paced, high-tech, and innovative environment.

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