Network Security Engineer

Carlsbad Tech; Quincy (MA); On-site; USD 70,000 - 90,000; Full time

Job summary

Carlsbad Tech is seeking a Network Security Engineer to enhance and maintain our enterprise network infrastructure. The ideal candidate will have hands-on experience and strong troubleshooting skills in a corporate environment, as well as a solid understanding of networking fundamentals.

The position is on-site five days a week, providing essential support for network operations and assisting senior engineers in various projects. Join us to contribute to a dynamic team focused on cutting-edge networking solutions.

Qualifications

• 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).

Responsibilities

• Support the Network and Security Manager and network engineering team.
• Troubleshoot network tickets, including LAN/WAN issues.
• Perform routine firmware updates and upgrades for network appliances.

Skills

Network troubleshooting

TCP/IP

Routing and switching

Communication skills

WAN/LAN issues resolution

Education

1+ years in corporate network environment or relevant internship

Tools

Fortinet

Cisco

Juniper Mist

Job description

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

Duties And Responsibilities

• 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, fire‑wall‑related problems, and connectivity incidents.
• Perform routine break/fix work, firmware updates, and hardware/software upgrades for fire‑walls, switches, and other network appliances.
• Implement fire‑wall policy changes and assist with ongoing fire‑wall rule maintenance and cleanup.
• Install and configure network devices (routers, switches, fire‑walls) 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.

What We Are Looking For

• 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).

Great‑ To‑ Haves

• 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, PowerShell) for automation or configuration tasks.