Network Security Engineer at Granite Telecommunications Quincy, MA

Network Security Engineer job at Granite Telecommunications. Quincy, MA.

• Support the Network and Security Manager and network engineering team with the design, maintenance, and day-to-day operation of our enterprise network across on-prem, branch, and hybrid environments.
• Troubleshoot and resolve network tickets, including LAN/WAN issues, firewall- related problems, and connectivity incidents.
• Perform routine break/fix work, firmware updates, and hardware/software upgrades for firewalls, switches, and other network appliances.
• Implement firewall policy changes and assist with ongoing firewall rule maintenance and cleanup.
• Install and configure network devices (routers, switches, firewalls) under guidance from senior engineers.
• Maintain accurate network topology diagrams for headquarters, branches, and WAN infrastructure.
• Participate in a weekly on-call rotation with the network team.
• Provide Tier 1 and Tier 2 support for network-related escalations.
• Perform and verify backups of network device configurations.
• Handle additional network or security projects as assigned.

• 1+ years of hands-on experience in a corporate/enterprise network environment or strong academic background with meaningful internship experience.
• Solid understanding of networking fundamentals such as TCP/IP, VLANs, routing, and switching.
• Familiarity with routing protocols (OSPF, BGP, EIGRP).
• Exposure to enterprise networking hardware (Fortinet, Cisco, Juniper Mist, or similar).
• Ability to analyze and troubleshoot network connectivity issues efficiently.
• Strong communication skills and a willingness to learn from senior engineers.
• Ability to work on-site five (5) days per week (primary work is hands-on with physical infrastructure).

• Certifications like CCNA (or in progress), CompTIA Network+, Fortinet NSE, or similar.
• Exposure to cloud networking concepts—especially GCP or AWS (e.g., VPCs, routing, firewalls, hybrid connectivity).
• Familiarity with virtualization and software-defined networking (Google Cloud networking, VMware NSX).
• Basic scripting skills (Python, Power Shell) for automation or configuration tasks.