Network Security Engineer III

Direct message the job poster from Granite Telecommunications Corporate Technology Recruiter @ Granite Telecommunications | Technical Recruiting General Summary of Position: We are seeking a highly skilled and motivated Network Security Engineer III to join our team. The successful candidate will be responsible for designing and building complex multi-vendor network solutions to support our North American business customers and maintain our core infrastructure. This role requires in-depth knowledge of various network technology and vendor implementations including Fortinet, Cisco. The ideal candidate will have strong expertise in routing protocol design, security, sd-wan implementations, and comprehensive documentation skills. Duties and Responsibilities: Design, implement, and maintain complex multi-vendor network solutions for business customers. Collaborate with cross-functional teams to assess network requirements and develop appropriate solutions. Configure and troubleshoot network devices, including routers, switches, firewalls, and other network appliances. Develop, maintain, iterate and improve internal reference architecture. Ensure network security by implementing and managing firewalls, VPNs, and other security measures. Develop and maintain detailed network documentation, including design diagrams, configuration guides, and standard operating procedures. Monitor network performance, identify issues, and implement solutions to optimize network efficiency. Provide technical support and guidance to customers and internal teams. Stay updated with the latest industry trends and technologies to ensure network solutions are current and effective. Participate in on-call rotations and respond to network emergencies as needed. Operate and maintain vendor specific core infrastructure including tracking licensing, tracking, planning and conducting firmware upgrade. Required Qualifications: Minimum of 5-8 years of experience in network and security engineering. Proficiency in designing and implementing network solutions using vendors such as Fortinet, Cisco. Strong understanding of routing protocols (e.g., BGP, OSPF) and VPN tunnels. Experience with network security principles and practices, including firewalls, VPNs, and intrusion detection/prevention systems. Excellent troubleshooting and problem-solving skills. Ability to create and maintain detailed network documentation. Strong communication skills and ability to work effectively in a team environment. Experience with Network Automation/DevOps including familiarity with Python, CI/CD tools and scripting large deployments/complex changes. Relevant certifications such as NSE 7, CCNP, or equivalent. Experience in a customer-facing role, providing technical support and solutions. Experience operating hypervisors, on prem and in the cloud. Experience operating the Fortinet product suite: Fortimanager, Fortianalyzer, etc. Preferred Qualifications: Preferred 8-12 years of experience in network and security engineering. Extensive familiarity with the Fortinet product offering. Experience operating and maintaining data center grade Fortinet equipment, experience planning and conducting upgrade cycles for Fortinet equipment. Experience at Managed Service Providers that support Fortinet. Advanced certifications such as Fortinet NSE 7, CCIE, JNCIP or equivalent. Experience with multi-cloud networking (MCN), unified SASE and network function virtualization (NFV). Knowledge of wireless networking technologies and solutions. Seniority level Seniority level Mid-Senior level Employment type Employment type Full-time Job function Job function Information Technology Industries Telecommunications Referrals increase your chances of interviewing at Granite Telecommunications by 2x Inferred from the description for this job Medical insurance Vision insurance 401(k) Student loan assistance Tuition assistance Get notified about new Network Security Engineer jobs in Quincy, MA . Cybersecurity Engineer (SOAR) [JOB ID 20250725] Boston, MA $55,000.00-$85,000.00 1 hour ago Greater Boston $99,461.00-$128,329.00 2 weeks ago Security Operations Center (SOC) Analyst Boston, MA $116,258.00-$155,011.00 2 months ago Information Security Engineer / Blue Team Cyber Security Engineer / First security hire Framingham, MA $110,000.00-$150,000.00 2 weeks ago Boston, MA $125,000.00-$175,000.00 3 days ago Newton, MA $130,000.00-$170,000.00 2 weeks ago Newton, MA $130,000.00-$180,000.00 2 weeks ago We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI. #J-18808-Ljbffr Granite Telecommunications